Akashic

county

Rock Island County, IL

Office (updates table and map)

President margin by year

Place winner margin

1892–2024 · D minus R

Full record · 1892 → 2024

2024

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German18.7%16.1%12.5%

Irish10.6%10.6%9.4%

English9.3%6.9%9.5%

Swedish4.2%1.5%—

American3.5%3.3%5.3%

Italian2.7%5.4%4.8%

Polish1.6%6.0%2.2%

Scottish1.5%—1.3%

Mexican12.3%14.4%11.3%

Puerto Rican0.4%1.7%1.8%

Spaniard0.3%——

Guatemalan0.2%0.3%0.5%

Honduran0.2%0.2%0.3%

African American†9.6%12.1%9.9%

African1.1%0.5%0.5%

Asian Indian0.8%2.1%1.4%

Burmese0.8%——

Filipino0.3%1.0%0.9%

Afghan0.2%——

Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.

Age and life stage

Measure	Rock Island County	Illinois	United States
Median age	40.3	39.1	39.1
Age 18–24	8.9%	9.1%	9.2%
Age 65 and older	20.4%	16.9%	17.2%

Household economy

Measure	Rock Island County	Illinois	United States
Median household income	$67,159	$83,390	$84,427
Poverty rate	15.5%	11.8%	12.5%
Bachelor's degree or higher (25+)	24.7%	37.9%	35.6%

Languages at home

Measure	Rock Island County	Illinois	United States
Speaks a non-English language at home	13.8%	24.1%	22.3%
Spanish	7.3%	14.0%	13.6%
French (incl. Cajun & Haitian)	1.6%	0.3%	0.7%
Other Indo-European	1.1%	2.6%	2.0%
Other languages	1.8%	0.6%	0.8%

Religious landscape

Measure	Rock Island County	Illinois	United States
Catholic	10.0%	24.2%	18.6%
Evangelical Protestant	8.0%	11.7%	16.5%
Unclaimed / not counted	68.2%	49.2%	51.5%
Mainline Protestant	7.2%	5.3%	5.2%

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.

President results by year

2024 turnout 61.1% of 104,873 citizens 18+

HarrisDemocratic53.8%34,126TrumpRepublican44.2%28,061KennedyIndependent1.7%1,080

D+9.6

Lead: 6,065
Total: 63,458
vs nation: D+11.0
Turnout: 61.1%

BidenDemocratic54.8%36,691TrumpRepublican42.7%28,603JorgensenLibertarian1.4%959

D+12.1

Lead: 8,088
Total: 66,947
vs nation: D+7.6
Turnout: 63.6%

ClintonDemocratic50.5%32,298TrumpRepublican42.2%26,998JohnsonLibertarian4.7%3,015

D+8.3

Lead: 5,300
Total: 63,994
vs nation: D+6.2
Turnout: 59.5%

ObamaDemocratic60.0%39,157RomneyRepublican38.2%24,934JOHNSONLibertarian1.0%651

D+21.8

Lead: 14,223
Total: 65,217
vs nation: D+18.0
Turnout: —

ObamaDemocratic61.7%42,210McCainRepublican37.1%25,364OtherAll other candidates1.2%827

D+24.6

Lead: 16,846
Total: 68,401
vs nation: D+17.4
Turnout: —

KerryDemocratic57.0%39,880BushRepublican42.4%29,663OtherAll other candidates0.6%429

D+14.6

Lead: 10,217
Total: 69,972
vs nation: D+17.1
Turnout: —

GoreDemocratic58.3%37,957BushRepublican38.7%25,194NaderGreen2.1%1,364

D+19.6

Lead: 12,763
Total: 65,095
vs nation: D+19.1
Turnout: —

ClintonDemocratic57.1%34,822DoleRepublican33.8%20,626PerotReform8.4%5,135

D+23.3

Lead: 14,196
Total: 60,955
vs nation: D+14.8
Turnout: —

Key facts

2024 presidential margin: D+9.6MIT Election Lab
Population: 142,7572024 5-year
Median household income: $67,1592024 5-year
White (non-Hispanic): 67.4%2024 5-year
Black: 10.9%2024 5-year
Hispanic / Latino: 14.2%2024 5-year
Peak Democratic margin: D+27.6 in 1964MIT Election Lab
Peak Republican margin: R+54.4 in 1920MIT Election Lab
Most similar: Mendocino County, CA · twin score 91.9

Participation

Midterm durability

Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.

2024 total turnout: 61.1%64,046 participants ÷ 104,873 CVAP
2020→2022 drop-off: +17.5 ptsVolatile
Drop-off versus state: -4.6 ptsPositive means a larger decline than the statewide pattern
Mechanical 2026 scenario: 43.6%–46.9%Recent-cycle and two-cycle persistence scenarios; not a forecast

Election	Participants	CVAP	Turnout	Quality
2016 · Presidential	63,994	107,597	59.5%	C/A
2018 · Midterm	51,706	106,598	48.5%	A/A
2020 · Presidential	66,947	105,229	63.6%	C/A
2022 · Midterm	48,995	106,132	46.2%	C/A
2024 · Presidential	64,046	104,873	61.1%	A/A

Sources and methods

2016: numerator source 159, denominator source 157; top ticket votes; canonical-complete-contest-floor-v1; allocation share 0.0%; series 148/111.
2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
2020: numerator source 159, denominator source 157; top ticket votes; canonical-complete-contest-floor-v1; allocation share 0.0%; series 152/2.
2022: numerator source 159, denominator source 157; top ticket votes; canonical-complete-contest-floor-v1; allocation share 0.0%; series 154/183.
2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.

Precinct data

Results by precinct

240 precincts · 64,046 votes

Election

Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.

Rock Island County precinct-level presidential election results for 2024

Precinct -ANDALUSIAANDALUSIA	519	892	39	1,450	35.8%	61.5%	R+25.7
Precinct -COAL VALLEY 3COAL VALLEY 3	617	751	37	1,405	43.9%	53.5%	R+9.5
Precinct -BLACKHAWK 3BLACKHAWK 3	609	608	26	1,243	49.0%	48.9%	D+0.1
Precinct -BOWLING 1BOWLING 1	468	734	36	1,238	37.8%	59.3%	R+21.5
Precinct -COECOE	395	708	27	1,130	35.0%	62.7%	R+27.7
Precinct -SOUTH MOLINE 4SOUTH MOLINE 4	569	465	29	1,063	53.5%	43.7%	D+9.8
Precinct -HAMPTON 1HAMPTON 1	387	546	20	953	40.6%	57.3%	R+16.7
Precinct -BLACKHAWK 7BLACKHAWK 7	461	410	29	900	51.2%	45.6%	D+5.7
Precinct -SOUTH MOLINE 29SOUTH MOLINE 29	522	314	41	877	59.5%	35.8%	D+23.7
Precinct -SOUTH MOLINE 9SOUTH MOLINE 9	441	396	28	865	51.0%	45.8%	D+5.2
Precinct -SOUTH ROCK ISLAND 12SOUTH ROCK ISLAND 12	472	334	19	825	57.2%	40.5%	D+16.7
Precinct -SOUTH MOLINE 13SOUTH MOLINE 13	453	344	27	824	55.0%	41.7%	D+13.2
Precinct -SOUTH MOLINE 11SOUTH MOLINE 11	441	323	33	797	55.3%	40.5%	D+14.8
Precinct -PORT BYRONPORT BYRON	336	426	22	784	42.9%	54.3%	R+11.5
Precinct -HAMPTON 17HAMPTON 17	377	386	16	779	48.4%	49.6%	R+1.2
Precinct -HAMPTON 14HAMPTON 14	454	298	25	777	58.4%	38.4%	D+20.1
Precinct -SOUTH MOLINE 7SOUTH MOLINE 7	413	337	20	770	53.6%	43.8%	D+9.9
Precinct -SOUTH ROCK ISLAND 13SOUTH ROCK ISLAND 13	425	318	20	763	55.7%	41.7%	D+14.0
Precinct -SOUTH ROCK ISLAND 3SOUTH ROCK ISLAND 3	493	226	28	747	66.0%	30.3%	D+35.7
Precinct -BLACKHAWK 4BLACKHAWK 4	315	404	22	741	42.5%	54.5%	R+12.0
Precinct -HAMPTON 2HAMPTON 2	320	405	14	739	43.3%	54.8%	R+11.5
Precinct -BOWLING 2BOWLING 2	290	410	18	718	40.4%	57.1%	R+16.7
Precinct -SOUTH MOLINE 17SOUTH MOLINE 17	407	280	17	704	57.8%	39.8%	D+18.0
Precinct -COAL VALLEY 1COAL VALLEY 1	292	383	20	695	42.0%	55.1%	R+13.1
Precinct -SOUTH ROCK ISLAND 5SOUTH ROCK ISLAND 5	426	245	15	686	62.1%	35.7%	D+26.4
Precinct -SOUTH ROCK ISLAND 14SOUTH ROCK ISLAND 14	390	257	27	674	57.9%	38.1%	D+19.7
Precinct -SOUTH MOLINE 8SOUTH MOLINE 8	302	341	26	669	45.1%	51.0%	R+5.8
Precinct -SOUTH ROCK ISLAND 11SOUTH ROCK ISLAND 11	358	284	20	662	54.1%	42.9%	D+11.2
Precinct -SOUTH MOLINE 18SOUTH MOLINE 18	394	251	14	659	59.8%	38.1%	D+21.7
Precinct -SOUTH MOLINE 19SOUTH MOLINE 19	323	314	20	657	49.2%	47.8%	D+1.4
Precinct -HAMPTON 16HAMPTON 16	310	320	18	648	47.8%	49.4%	R+1.5
Precinct -SOUTH MOLINE 6SOUTH MOLINE 6	346	272	28	646	53.6%	42.1%	D+11.5
Precinct -SOUTH ROCK ISLAND 6SOUTH ROCK ISLAND 6	397	232	14	643	61.7%	36.1%	D+25.7
Precinct -RURALRURAL	232	390	20	642	36.1%	60.7%	R+24.6
Precinct -SOUTH ROCK ISLAND 4SOUTH ROCK ISLAND 4	382	250	10	642	59.5%	38.9%	D+20.6
Precinct -SOUTH ROCK ISLAND 8SOUTH ROCK ISLAND 8	375	245	21	641	58.5%	38.2%	D+20.3
Precinct -SOUTH ROCK ISLAND 10SOUTH ROCK ISLAND 10	390	234	13	637	61.2%	36.7%	D+24.5
Precinct -SOUTH MOLINE 27SOUTH MOLINE 27	354	252	28	634	55.8%	39.7%	D+16.1
Precinct -ROCK ISLAND 10ROCK ISLAND 10	401	198	25	624	64.3%	31.7%	D+32.5
Precinct -SOUTH MOLINE 28SOUTH MOLINE 28	308	287	20	615	50.1%	46.7%	D+3.4
Precinct -MOLINE 3MOLINE 3	368	229	14	611	60.2%	37.5%	D+22.7
Precinct -HAMPTON 10HAMPTON 10	340	250	19	609	55.8%	41.1%	D+14.8
Precinct -MOLINE 4MOLINE 4	359	235	15	609	58.9%	38.6%	D+20.4
Precinct -HAMPTON 15HAMPTON 15	322	258	15	595	54.1%	43.4%	D+10.8
Precinct -SOUTH MOLINE 20SOUTH MOLINE 20	349	218	24	591	59.1%	36.9%	D+22.2
Precinct -MOLINE 5MOLINE 5	351	217	16	584	60.1%	37.2%	D+22.9
Precinct -MOLINE 9MOLINE 9	316	242	23	581	54.4%	41.7%	D+12.7
Precinct -BLACKHAWK 6BLACKHAWK 6	315	245	17	577	54.6%	42.5%	D+12.1
Precinct -SOUTH MOLINE 16SOUTH MOLINE 16	330	235	12	577	57.2%	40.7%	D+16.5
Precinct -SOUTH MOLINE 22SOUTH MOLINE 22	348	199	15	562	61.9%	35.4%	D+26.5
Precinct -HAMPTON 5HAMPTON 5	306	237	15	558	54.8%	42.5%	D+12.4
Precinct -MOLINE 20MOLINE 20	342	204	12	558	61.3%	36.6%	D+24.7
Precinct -SOUTH MOLINE 2SOUTH MOLINE 2	351	197	9	557	63.0%	35.4%	D+27.6
Precinct -MOLINE 16MOLINE 16	315	212	15	542	58.1%	39.1%	D+19.0
Precinct -HAMPTON 12HAMPTON 12	276	235	15	526	52.5%	44.7%	D+7.8
Precinct -ROCK ISLAND 15ROCK ISLAND 15	314	187	11	512	61.3%	36.5%	D+24.8
Precinct -MOLINE 11MOLINE 11	286	204	18	508	56.3%	40.2%	D+16.1
Precinct -MOLINE 18MOLINE 18	258	228	16	502	51.4%	45.4%	D+6.0
Precinct -SOUTH ROCK ISLAND 7SOUTH ROCK ISLAND 7	320	169	12	501	63.9%	33.7%	D+30.1
Precinct -MOLINE 13MOLINE 13	291	186	10	487	59.8%	38.2%	D+21.6
Precinct -CORDOVACORDOVA	156	313	16	485	32.2%	64.5%	R+32.4
Precinct -BUFFALO PRAIRIEBUFFALO PRAIRIE	134	332	11	477	28.1%	69.6%	R+41.5
Precinct -EDGINGTON 1EDGINGTON 1	153	310	10	473	32.3%	65.5%	R+33.2
Precinct -SOUTH MOLINE 24SOUTH MOLINE 24	236	216	16	468	50.4%	46.2%	D+4.3
Precinct -MOLINE 17MOLINE 17	259	185	18	462	56.1%	40.0%	D+16.0
Precinct -HAMPTON 11HAMPTON 11	256	190	12	458	55.9%	41.5%	D+14.4
Precinct -DRURYDRURY	123	313	10	446	27.6%	70.2%	R+42.6
Precinct -ZUMAZUMA	135	298	12	445	30.3%	67.0%	R+36.6
Precinct -SOUTH ROCK ISLAND 9SOUTH ROCK ISLAND 9	267	158	15	440	60.7%	35.9%	D+24.8
Precinct -SOUTH MOLINE 14SOUTH MOLINE 14	260	169	9	438	59.4%	38.6%	D+20.8
Precinct -COAL VALLEY 2COAL VALLEY 2	201	226	9	436	46.1%	51.8%	R+5.7
Precinct -MOLINE 2MOLINE 2	255	161	19	435	58.6%	37.0%	D+21.6
Precinct -MOLINE 10MOLINE 10	282	131	19	432	65.3%	30.3%	D+35.0
Precinct -SOUTH MOLINE 5SOUTH MOLINE 5	222	189	16	427	52.0%	44.3%	D+7.7
Precinct -HAMPTON 6HAMPTON 6	208	203	9	420	49.5%	48.3%	D+1.2
Precinct -SOUTH MOLINE 1SOUTH MOLINE 1	244	168	7	419	58.2%	40.1%	D+18.1
Precinct -ROCK ISLAND 6ROCK ISLAND 6	312	86	19	417	74.8%	20.6%	D+54.2
Precinct -SOUTH MOLINE 15SOUTH MOLINE 15	226	179	9	414	54.6%	43.2%	D+11.4
Precinct -MOLINE 8MOLINE 8	277	127	9	413	67.1%	30.8%	D+36.3
Precinct -SOUTH MOLINE 10SOUTH MOLINE 10	239	155	12	406	58.9%	38.2%	D+20.7
Precinct -MOLINE 1MOLINE 1	253	127	14	394	64.2%	32.2%	D+32.0
Precinct -BLACKHAWK 1BLACKHAWK 1	183	191	9	383	47.8%	49.9%	R+2.1
Precinct -MOLINE 7MOLINE 7	225	142	16	383	58.7%	37.1%	D+21.7
Precinct -MOLINE 15MOLINE 15	249	116	13	378	65.9%	30.7%	D+35.2
Precinct -MOLINE 6MOLINE 6	236	126	11	373	63.3%	33.8%	D+29.5
Precinct -ROCK ISLAND 9ROCK ISLAND 9	251	112	9	372	67.5%	30.1%	D+37.4
Precinct -SOUTH MOLINE 21SOUTH MOLINE 21	211	149	11	371	56.9%	40.2%	D+16.7
Precinct -BLACKHAWK 2BLACKHAWK 2	180	174	12	366	49.2%	47.5%	D+1.6
Precinct -SOUTH MOLINE 12SOUTH MOLINE 12	212	144	8	364	58.2%	39.6%	D+18.7
Precinct -SOUTH ROCK ISLAND 1SOUTH ROCK ISLAND 1	253	95	14	362	69.9%	26.2%	D+43.6
Precinct -EDGINGTON 2EDGINGTON 2	110	235	16	361	30.5%	65.1%	R+34.6
Precinct -SOUTH MOLINE 25SOUTH MOLINE 25	183	165	13	361	50.7%	45.7%	D+5.0
Precinct -BLACKHAWK 5BLACKHAWK 5	174	177	7	358	48.6%	49.4%	R+0.8
Precinct -ROCK ISLAND 12ROCK ISLAND 12	233	106	15	354	65.8%	29.9%	D+35.9
Precinct -SOUTH ROCK ISLAND 2SOUTH ROCK ISLAND 2	236	108	8	352	67.0%	30.7%	D+36.4
Precinct -SOUTH MOLINE 26SOUTH MOLINE 26	219	115	12	346	63.3%	33.2%	D+30.1
Precinct -SOUTH ROCK ISLAND 15SOUTH ROCK ISLAND 15	192	144	10	346	55.5%	41.6%	D+13.9
Precinct -SOUTH MOLINE 23SOUTH MOLINE 23	164	152	13	329	49.8%	46.2%	D+3.6
Precinct -HAMPTON 7HAMPTON 7	155	167	5	327	47.4%	51.1%	R+3.7
Precinct -ROCK ISLAND 14ROCK ISLAND 14	202	105	10	317	63.7%	33.1%	D+30.6
Precinct -ROCK ISLAND 5ROCK ISLAND 5	234	77	4	315	74.3%	24.4%	D+49.8
Precinct -HAMPTON 3HAMPTON 3	207	95	11	313	66.1%	30.4%	D+35.8
Precinct -SOUTH MOLINE 3SOUTH MOLINE 3	176	121	16	313	56.2%	38.7%	D+17.6
Precinct -ROCK ISLAND 13ROCK ISLAND 13	166	103	7	276	60.1%	37.3%	D+22.8
Precinct -ROCK ISLAND 7ROCK ISLAND 7	201	65	9	275	73.1%	23.6%	D+49.5
Precinct -MOLINE 12MOLINE 12	136	115	15	266	51.1%	43.2%	D+7.9
Precinct -MOLINE 19MOLINE 19	157	97	6	260	60.4%	37.3%	D+23.1
Precinct -CANOE CREEKCANOE CREEK	61	188	4	253	24.1%	74.3%	R+50.2
Precinct -HAMPTON 4HAMPTON 4	180	65	8	253	71.1%	25.7%	D+45.5
Precinct -ROCK ISLAND 8ROCK ISLAND 8	196	47	7	250	78.4%	18.8%	D+59.6
Precinct -ROCK ISLAND 3ROCK ISLAND 3	188	49	6	243	77.4%	20.2%	D+57.2
Precinct -HAMPTON 9HAMPTON 9	90	138	6	234	38.5%	59.0%	R+20.5
Precinct -HAMPTON 8HAMPTON 8	102	124	7	233	43.8%	53.2%	R+9.4
Precinct -MOLINE 14MOLINE 14	118	104	6	228	51.8%	45.6%	D+6.1
Precinct -HAMPTON 13HAMPTON 13	154	55	6	215	71.6%	25.6%	D+46.0
Precinct -ROCK ISLAND 1ROCK ISLAND 1	172	37	6	215	80.0%	17.2%	D+62.8
Precinct -SOUTH ROCK ISLAND 16SOUTH ROCK ISLAND 16	104	58	7	169	61.5%	34.3%	D+27.2
Precinct -ROCK ISLAND 11ROCK ISLAND 11	104	54	5	163	63.8%	33.1%	D+30.7
Precinct -ROCK ISLAND 2ROCK ISLAND 2	107	23	4	134	79.9%	17.2%	D+62.7
Precinct -ROCK ISLAND 4ROCK ISLAND 4	86	30	1	117	73.5%	25.6%	D+47.9
ANDALUSIA Voting District17_171611601	0	0	0	0	—	—	No votes
BLACKHAWK 1 Voting District17_171611101	0	0	0	0	—	—	No votes
BLACKHAWK 2 Voting District17_171611102	0	0	0	0	—	—	No votes
BLACKHAWK 3 Voting District17_171611103	0	0	0	0	—	—	No votes
BLACKHAWK 4 Voting District17_171611104	0	0	0	0	—	—	No votes
BLACKHAWK 5 Voting District17_171611105	0	0	0	0	—	—	No votes
BLACKHAWK 6 Voting District17_171611106	0	0	0	0	—	—	No votes
BLACKHAWK 7 Voting District17_171611107	0	0	0	0	—	—	No votes
BOWLING 1 Voting District17_171611401	0	0	0	0	—	—	No votes
BOWLING 2 Voting District17_171611402	0	0	0	0	—	—	No votes
BUFFALO PRAIRIE Voting District17_171611701	0	0	0	0	—	—	No votes
CANOE CREEK Voting District17_171610301	0	0	0	0	—	—	No votes
COAL VALLEY 1 Voting District17_171611201	0	0	0	0	—	—	No votes
COAL VALLEY 2 Voting District17_171611202	0	0	0	0	—	—	No votes
COAL VALLEY 3 Voting District17_171611203	0	0	0	0	—	—	No votes
COE Voting District17_171610201	0	0	0	0	—	—	No votes
CORDOVA Voting District17_171610101	0	0	0	0	—	—	No votes
DRURY Voting District17_171611801	0	0	0	0	—	—	No votes
EDGINGTON 1 Voting District17_171611501	0	0	0	0	—	—	No votes
EDGINGTON 2 Voting District17_171611502	0	0	0	0	—	—	No votes
HAMPTON 1 Voting District17_171610601	0	0	0	0	—	—	No votes
HAMPTON 10 Voting District17_171610610	0	0	0	0	—	—	No votes
HAMPTON 11 Voting District17_171610611	0	0	0	0	—	—	No votes
HAMPTON 12 Voting District17_171610612	0	0	0	0	—	—	No votes
HAMPTON 13 Voting District17_171610613	0	0	0	0	—	—	No votes
HAMPTON 14 Voting District17_171610614	0	0	0	0	—	—	No votes
HAMPTON 15 Voting District17_171610615	0	0	0	0	—	—	No votes
HAMPTON 16 Voting District17_171610616	0	0	0	0	—	—	No votes
HAMPTON 17 Voting District17_171610617	0	0	0	0	—	—	No votes
HAMPTON 2 Voting District17_171610602	0	0	0	0	—	—	No votes
HAMPTON 3 Voting District17_171610603	0	0	0	0	—	—	No votes
HAMPTON 4 Voting District17_171610604	0	0	0	0	—	—	No votes
HAMPTON 5 Voting District17_171610605	0	0	0	0	—	—	No votes
HAMPTON 6 Voting District17_171610606	0	0	0	0	—	—	No votes
HAMPTON 7 Voting District17_171610607	0	0	0	0	—	—	No votes
HAMPTON 8 Voting District17_171610608	0	0	0	0	—	—	No votes
HAMPTON 9 Voting District17_171610609	0	0	0	0	—	—	No votes
MOLINE 1-1 Voting District17_171610811	0	0	0	0	—	—	No votes
MOLINE 1-2 Voting District17_171610812	0	0	0	0	—	—	No votes
MOLINE 1-3 Voting District17_171610813	0	0	0	0	—	—	No votes
MOLINE 1-4 Voting District17_171610814	0	0	0	0	—	—	No votes
MOLINE 1-5 Voting District17_171610815	0	0	0	0	—	—	No votes
MOLINE 2-1 Voting District17_171610821	0	0	0	0	—	—	No votes
MOLINE 2-2 Voting District17_171610822	0	0	0	0	—	—	No votes
MOLINE 2-3 Voting District17_171610823	0	0	0	0	—	—	No votes
MOLINE 2-4 Voting District17_171610824	0	0	0	0	—	—	No votes
MOLINE 3-1 Voting District17_171610831	0	0	0	0	—	—	No votes
MOLINE 3-2 Voting District17_171610832	0	0	0	0	—	—	No votes
MOLINE 3-3 Voting District17_171610833	0	0	0	0	—	—	No votes
MOLINE 3-4 Voting District17_171610834	0	0	0	0	—	—	No votes
MOLINE 4-1 Voting District17_171610841	0	0	0	0	—	—	No votes
MOLINE 4-2 Voting District17_171610842	0	0	0	0	—	—	No votes
MOLINE 4-3 Voting District17_171610843	0	0	0	0	—	—	No votes
MOLINE 5-1 Voting District17_171610851	0	0	0	0	—	—	No votes
MOLINE 6-1 Voting District17_171610861	0	0	0	0	—	—	No votes
MOLINE 7-1 Voting District17_171610871	0	0	0	0	—	—	No votes
MOLINE 7-2 Voting District17_171610872	0	0	0	0	—	—	No votes
PORT BYRON Voting District17_171610501	0	0	0	0	—	—	No votes
ROCK ISLAND 1-1 Voting District17_171610911	0	0	0	0	—	—	No votes
ROCK ISLAND 2-1 Voting District17_171610921	0	0	0	0	—	—	No votes
ROCK ISLAND 2-2 Voting District17_171610922	0	0	0	0	—	—	No votes
ROCK ISLAND 3-1 Voting District17_171610931	0	0	0	0	—	—	No votes
ROCK ISLAND 3-2 Voting District17_171610932	0	0	0	0	—	—	No votes
ROCK ISLAND 4-1 Voting District17_171610941	0	0	0	0	—	—	No votes
ROCK ISLAND 4-2 Voting District17_171610942	0	0	0	0	—	—	No votes
ROCK ISLAND 4-3 Voting District17_171610943	0	0	0	0	—	—	No votes
ROCK ISLAND 5-1 Voting District17_171610951	0	0	0	0	—	—	No votes
ROCK ISLAND 5-2 Voting District17_171610952	0	0	0	0	—	—	No votes
ROCK ISLAND 6-1 Voting District17_171610961	0	0	0	0	—	—	No votes
ROCK ISLAND 6-2 Voting District17_171610962	0	0	0	0	—	—	No votes
ROCK ISLAND 6-3 Voting District17_171610963	0	0	0	0	—	—	No votes
ROCK ISLAND 7-1 Voting District17_171610971	0	0	0	0	—	—	No votes
ROCK ISLAND 7-2 Voting District17_171610972	0	0	0	0	—	—	No votes
RURAL Voting District17_171611301	0	0	0	0	—	—	No votes
SOUTH MOLINE 1 Voting District17_171610701	0	0	0	0	—	—	No votes
SOUTH MOLINE 10 Voting District17_171610710	0	0	0	0	—	—	No votes
SOUTH MOLINE 11 Voting District17_171610711	0	0	0	0	—	—	No votes
SOUTH MOLINE 12 Voting District17_171610712	0	0	0	0	—	—	No votes
SOUTH MOLINE 13 Voting District17_171610713	0	0	0	0	—	—	No votes
SOUTH MOLINE 14 Voting District17_171610714	0	0	0	0	—	—	No votes
SOUTH MOLINE 15 Voting District17_171610715	0	0	0	0	—	—	No votes
SOUTH MOLINE 16 Voting District17_171610716	0	0	0	0	—	—	No votes
SOUTH MOLINE 17 Voting District17_171610717	0	0	0	0	—	—	No votes
SOUTH MOLINE 18 Voting District17_171610718	0	0	0	0	—	—	No votes
SOUTH MOLINE 19 Voting District17_171610719	0	0	0	0	—	—	No votes
SOUTH MOLINE 2 Voting District17_171610702	0	0	0	0	—	—	No votes
SOUTH MOLINE 20 Voting District17_171610720	0	0	0	0	—	—	No votes
SOUTH MOLINE 21 Voting District17_171610721	0	0	0	0	—	—	No votes
SOUTH MOLINE 22 Voting District17_171610722	0	0	0	0	—	—	No votes
SOUTH MOLINE 23 Voting District17_171610723	0	0	0	0	—	—	No votes
SOUTH MOLINE 24 Voting District17_171610724	0	0	0	0	—	—	No votes
SOUTH MOLINE 25 Voting District17_171610725	0	0	0	0	—	—	No votes
SOUTH MOLINE 26 Voting District17_171610726	0	0	0	0	—	—	No votes
SOUTH MOLINE 27 Voting District17_171610727	0	0	0	0	—	—	No votes
SOUTH MOLINE 28 Voting District17_171610728	0	0	0	0	—	—	No votes
SOUTH MOLINE 29 Voting District17_171610729	0	0	0	0	—	—	No votes
SOUTH MOLINE 3 Voting District17_171610703	0	0	0	0	—	—	No votes
SOUTH MOLINE 4 Voting District17_171610704	0	0	0	0	—	—	No votes
SOUTH MOLINE 5 Voting District17_171610705	0	0	0	0	—	—	No votes
SOUTH MOLINE 6 Voting District17_171610706	0	0	0	0	—	—	No votes
SOUTH MOLINE 7 Voting District17_171610707	0	0	0	0	—	—	No votes
SOUTH MOLINE 8 Voting District17_171610708	0	0	0	0	—	—	No votes
SOUTH MOLINE 9 Voting District17_171610709	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 1 Voting District17_171611001	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 10 Voting District17_171611010	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 11 Voting District17_171611011	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 12 Voting District17_171611012	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 13 Voting District17_171611013	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 14 Voting District17_171611014	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 15 Voting District17_171611015	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 16 Voting District17_171611016	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 2 Voting District17_171611002	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 3 Voting District17_171611003	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 4 Voting District17_171611004	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 5 Voting District17_171611005	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 6 Voting District17_171611006	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 7 Voting District17_171611007	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 8 Voting District17_171611008	0	0	0	0	—	—	No votes
SOUTH ROCK ISLAND 9 Voting District17_171611009	0	0	0	0	—	—	No votes
ZUMA Voting District17_171610401	0	0	0	0	—	—	No votes

presidential history

Presidential margin, 1892–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
1892	−10.6%
1896	−21.6%
1900	−25.9%
1904	−45.4%
1908	−23.4%
1912	+10.5%
1916	−17.3%
1920	−54.4%
1924	−47.5%
1928	−30.9%
1932	+7.5%
1936	+25.0%
1940	+15.7%
1944	+11.3%
1948	+5.0%
1952	−8.3%
1956	−3.6%
1960	+1.9%
1964	+27.6%
1968	+5.8%
1972	−7.1%
1976	+2.8%
1980	−6.6%
1984	+6.7%
1988	+18.8%
1992	+19.7%
1996	+23.3%
2000	+19.6%
2004	+14.6%
2008	+24.6%
2012	+21.8%
2016	+8.3%
2020	+12.1%
2024	+9.6%

DemocraticRepublican

38 presidential elections

Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle; not shown when either cycle is estimated or under source review. vs U.S. · margin relative to the national result that year.
Year	Won	Democratic	Republican	Other	Margin	Swing	vs U.S.	Total
2024	D	53.8%Harris34,126	44.2%Trump28,061	1.7%Kennedy1,080	D+9.6	R+2.5	D+11.0	63,458
2020	D	54.8%Biden36,691	42.7%Trump28,603	1.4%Jorgensen959	D+12.1	D+3.8	D+7.6	66,947
2016	D	50.5%Clinton32,298	42.2%Trump26,998	4.7%Johnson3,015	D+8.3	R+13.5	D+6.2	63,994
2012	D	60.0%Obama39,157	38.2%Romney24,934	1.0%JOHNSON651	D+21.8	R+2.8	D+18.0	65,217
2008	D	61.7%Obama42,210	37.1%McCain25,364	1.2%	D+24.6	D+10.0	D+17.4	68,401
2004	D	57.0%Kerry39,880	42.4%Bush29,663	0.6%	D+14.6	R+5.0	D+17.1	69,972
2000	D	58.3%Gore37,957	38.7%Bush25,194	2.1%Nader1,364	D+19.6	R+3.7	D+19.1	65,095
1996	D	57.1%Clinton34,822	33.8%Dole20,626	8.4%Perot5,135	D+23.3	D+3.6	D+14.8	60,955
1992	D	51.9%Clinton37,412	32.2%Bush23,212	14.5%Perot10,416	D+19.7	D+0.9	D+14.2	72,039
1988	D	59.2%Dukakis40,174	40.4%Bush27,412	0.5%	D+18.8	D+12.1	D+26.5	67,901
1984	D	53.1%Mondale40,208	46.4%Reagan35,121	0.5%	D+6.7	D+13.3	D+24.9	75,672
1980	R	41.9%Carter30,045	48.5%Reagan34,788	9.7%	R+6.6	R+9.4	D+3.1	71,775
1976	D	50.5%Carter35,994	47.7%Ford34,007	1.8%	D+2.8	D+9.9	D+0.7	71,261
1972	R	46.3%McGovern32,529	53.4%Nixon37,548	0.4%	R+7.1	R+13.0	D+16.0	70,330
1968	D	49.2%Humphrey34,506	43.3%Nixon30,404	7.5%	D+5.8	R+21.7	D+6.5	70,140
1964	D	63.8%Johnson41,759	36.2%Goldwater23,714	0.0%	D+27.6	D+25.6	D+5.0	65,473
1960	D	50.9%Kennedy33,812	49.0%Nixon32,534	0.2%	D+1.9	D+5.5	D+1.8	66,454
1956	R	48.1%Stevenson29,145	51.7%Eisenhower31,342	0.2%	R+3.6	D+4.7	D+11.8	60,605
1952	R	45.8%Stevenson27,879	54.1%Eisenhower32,933	0.2%	R+8.3	R+13.3	D+2.5	60,912
1948	D	52.0%Truman24,542	47.0%Dewey22,192	1.0%	D+5.0	R+6.3	D+0.5	47,211
1944	D	55.5%Roosevelt30,102	44.2%Dewey23,980	0.3%	D+11.3	R+4.4	D+3.8	54,262
1940	D	57.7%Roosevelt35,240	41.9%Willkie25,629	0.4%	D+15.7	R+9.3	D+5.8	61,101
1936	D	61.7%Roosevelt32,741	36.7%Landon19,487	1.5%	D+25.0	D+17.5	D+0.7	53,027
1932	D	53.0%Roosevelt24,676	45.6%Hoover21,205	1.4%	D+7.5	D+38.4	R+10.3	46,549
1928	R	34.3%Smith14,334	65.2%Hoover27,246	0.5%	R+30.9	D+16.6	R+13.4	41,776
1924	R	10.2%Davis3,631	57.7%Coolidge20,563	31.8%La Follette11,320	R+47.5	D+6.9	R+22.3	35,647
1920	R	17.0%Cox5,208	71.3%Harding21,908	11.7%	R+54.4	R+37.0	R+28.2	30,719
1916	R	36.0%Wilson10,914	53.3%Hughes16,169	10.7%	R+17.3	R+27.8	R+20.5	30,322
1912	O	26.1%Wilson3,997	15.7%Taft2,394	58.2%	Roosevelt +32.1	D+33.9	R+9.1	15,289
1908	R	32.1%Bryan4,739	55.4%Taft8,196	12.5%	R+23.4	D+22.0	R+13.8	14,781
1904	R	16.3%Parker2,156	61.7%Roosevelt8,152	21.9%	R+45.4	R+19.5	R+25.7	13,203
1900	R	35.3%Bryan4,786	61.2%McKinley8,299	3.5%	R+25.9	R+4.3	R+18.4	13,556
1896	R	38.5%Bryan4,692	60.1%McKinley7,323	1.4%	R+21.6	R+11.0	R+15.5	12,191
1892	R	41.8%Cleveland4,034	52.4%Harrison5,052	5.8%	R+10.6	—	R+12.2	9,645
1888	—	—	—	—	No data	—	—	—
1884	—	—	—	—	No data	—	—	—
1880	—	—	—	—	No data	—	—	—
1876	—	—	—	—	No data	—	—	—

Federal and statewide elections · 3 House · 37 Senate · 3 Senate special · 13 governor

U.S. House

Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.

Source · Akashic actual-race rollup from certified returns, House; geographic aggregation.
Year	Vote lead	Democratic	Republican	Total
2024	D	57.9%36,503	42.1%26,526	63,029
2020	D	56.8%37,651	43.2%28,694	66,345
2018	D	67.2%1,277	32.8%622	1,899

U.S. Senate

Each row shows U.S. Senate votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.

Sources · MIT Election Data and Science Lab (MEDSL); Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC BY 4.0 / CC0 1.0.
Year	Vote lead	Democratic	Republican	Total
2022	D	55.2%26,469	42.8%20,548	47,972
2020Class II	D	55.2%Dick Durbin36,493	41.9%Mark Curran27,705	66,163
2016Class III	D	52.4%Tammy Duckworth32,952	42.6%Mark Kirk26,767	62,903
2014Class II	D	53.6%Dick Durbin24,143	43.1%Jim Oberweis19,406	45,010
2010Class III	R	44.3%Alex Giannoulias20,445	50.3%Mark Kirk23,249	46,203
2008Class II	D	66.5%Dick Durbin44,418	30.2%Steve Sauerberg20,172	66,830
2004Class III	D	71.1%Barack Obama49,096	27.0%Alan Keyes18,620	69,072
2002Class II	D	63.1%Dick Durbin26,998	35.3%Jim Durkin15,096	42,757
1998Class III	R	41.6%Carol Moseley-Braun19,615	55.1%Peter Fitzgerald25,998	47,203
1996Class II	D	57.7%Dick Durbin34,604	39.0%Al Salvi23,431	60,004
1992Class III	D	53.1%Carol Moseley-Braun37,465	42.7%Richard Williamson30,072	70,504
1990Class II	D	68.9%Paul Simon30,579	31.1%Lynn Martin13,824	44,403
1986Class III	D	68.1%Alan J. Dixon30,220	30.8%Judy Koehler13,687	44,378
1984Class II	D	55.4%Paul Simon41,470	43.4%Charles H. Percy32,524	74,859
1980Class III	D	57.2%Alan J. Dixon38,372	41.6%David C. O'Neal27,915	67,107
1978Class II	R	44.3%Alex Seith18,370	54.6%Charles H. Percy22,641	41,494
1974Class III	D	65.2%Adlai Stevenson III28,282	34.4%George M. Burditt14,903	43,355
1972Class II	R	38.3%Roman Pucinski26,393	61.3%Charles H. Percy42,225	68,853
1968Class III	R	44.5%William G. Clark29,945	55.0%Everett Dirksen37,044	67,319
1966Class II	R	48.7%Paul H. Douglas24,258	51.3%Charles H. Percy25,550	49,808
1962Class III	R	46.2%Sidney R. Yates20,451	53.8%Everett Dirksen23,849	44,300
1960Class II	D	56.5%Paul H. Douglas36,647	43.4%Samuel W. Witwer28,154	64,870
1956Class III	D	56.6%Richard Stengel33,653	43.3%Everett Dirksen25,723	59,464
1954Class II	D	56.6%Paul H. Douglas25,291	43.4%Joseph T. Meek19,390	44,681
1950Class III	R	45.3%Scott W. Lucas18,298	54.3%Everett Dirksen21,944	40,435
1948Class II	D	55.0%Paul H. Douglas25,572	44.4%C. Wayland Brooks20,646	46,477
1944Class III	D	56.7%Scott W. Lucas30,366	43.0%Richard J. Lyons23,046	53,587
1942Class II	R	46.9%Raymond McKeough19,460	52.8%C. Wayland Brooks21,876	41,467
1938Class III	D	50.9%Scott W. Lucas19,869	48.9%Richard J. Lyons19,096	39,031
1936Class II	D	61.3%James H. Lewis31,328	37.2%Otis F. Glenn19,032	51,107
1932Class III	D	51.3%William H. Dieterich22,516	47.6%Otis F. Glenn20,903	43,881
1930Class II	D	59.8%James H. Lewis18,432	34.7%Ruth H. McCormick10,677	30,799
1926Class III	R	36.7%George E. Brennan7,920	58.3%Frank L. Smith12,588	21,589
1924Class II	R	22.5%Albert A. Sprague6,583	76.3%Charles S. Deneen22,343	29,267
1920Class III	R	19.3%Peter A. Waller5,897	69.7%William B. McKinley21,318	30,579
1918Class II	R	36.1%James H. Lewis4,643	52.1%Medill McCormick6,701	12,861
1914Class III	R	27.9%Roger C. Sullivan4,055	44.7%Lawrence Y. Sherman6,480	14,511

U.S. Senate special elections

Each row shows U.S. Senate special votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.

Source · Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC0 1.0.
Year	Vote lead	Democratic	Republican	Total
1970Special · Class III	D	60.6%Adlai Stevenson III29,777	39.1%Ralph T. Smith19,191	49,137
1940Special · Class II	D	55.8%James M. Slattery32,959	43.9%C. Wayland Brooks25,899	59,038
1928Special · Class III	R	35.4%Anton J. Cermak13,271	64.2%Otis F. Glenn24,058	37,466

Governor

Each row shows Governor votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.

Sources · MIT Election Data and Science Lab (MEDSL); Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC BY 4.0 / CC0 1.0.
Year	Vote lead	Democratic	Republican	Total
2022	D	53.2%Jb Pritzker25,663	43.8%Darren Bailey21,130	48,203
2018	D	50.8%Jb Pritzker25,774	42.3%Bruce Rauner21,434	50,699
2014	R	45.6%Pat Quinn20,495	50.5%Bruce Rauner22,680	44,940
2010	R	44.2%Pat Quinn20,514	49.4%Bill Brady22,904	46,363
2006	D	56.7%Rod Blagojevich26,201	37.1%Judy Baar Topinka17,168	46,229
2002	D	54.3%Rod Blagojevich23,193	43.1%Jim Ryan18,382	42,679
1998	R	46.5%Glenn Poshard22,051	52.1%George Ryan24,733	47,435
1994	R	34.1%Dawn Clark Netsch14,238	64.4%Jim Edgar26,901	41,790
1990	D	53.0%Neil Hartigan23,572	45.9%Jim Edgar20,413	44,461
1986	—	10.6%''No nominee''4,700	40.5%Jim Thompson18,023	44,498
1982	D	54.4%Adlai Stevenson III30,217	43.6%Jim Thompson24,212	55,595
1978	R	42.0%Michael Bakalis17,439	56.9%Jim Thompson23,618	41,506
1976	R	32.9%Michael Howlett22,846	66.3%Jim Thompson45,970	69,356

voter registration

Registered voters

Total registered voters, over time

Registered voters

Voter registration in Rock Island County, IL
Year	Total registered
2016	100,163
2018	100,163
2020	91,852
2022	87,406
2024	90,276

domestic migration

Who moves in and out

Net migration over time, and who arrivals are — where they came from and what those places vote

−421 net domestic migration · 2025

20112025

Net −15,992 over 2011–2025 · gain loss

Arrivals reported $51,297 in average income, against $71,140 for residents who stayed — 28% lower. (IRS SOI, 2022–23)

The places arrivals came from lean R+5.8 on average — 15 points more Republican-leaning than Rock Island County, IL itself (D+9.6).

Where arrivals came from lean of each source

Scott County, IA870R+3.9
Henry County, IL317R+24.4
Cook County, IL115D+41.6
Mercer County, IL108R+27.1
Whiteside County, IL55R+14.7
Muscatine County, IA52R+14.9

Where departures went households, 2022–23

Scott County, IA958
Henry County, IL278
Mercer County, IL125
Cook County, IL120
Johnson County, IA58
Muscatine County, IA48

Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.

Domestic migration in Rock Island County, IL in Rock Island County, IL: net domestic migration by year
Year	Net domestic migration
2011	−812
2012	−488
2013	−686
2014	−1,476
2015	−1,610
2016	−1,793
2017	−1,665
2018	−1,551
2019	−1,158
2021	−1,550
2022	−1,773
2023	−674
2024	−335
2025	−421

Rock Island anchors Illinois's Quad Cities metro along the Iowa border, where a unionized manufacturing heritage and a diverse urban core in Rock Island and Moline have kept the county reliably left of center in statewide contests.

Across the recorded series it reached a Democratic high of 27.6 points in 1964 and a Republican high of 54.4 points in 1920. Between 2020 and 2024 the county moved 2.5 points toward the Republican candidate; the 2024 margin was 9.6 points.

A population of 142,757, a 67% non-Hispanic-white share, and a median household income of $67,159 describe the county. The county's voting pattern over the last decade is most similar to that of Mendocino County and Philadelphia County.

Political twins — counties

The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

Mendocino County

California

91.9twin score

2000–2024 trajectory≠ Swedish ancestry

Philadelphia County

Pennsylvania

89.6twin score

% EvangelicalFrench ancestryAmerican ancestry≠ 2016 margin

Rock County

Wisconsin

88.9twin score

2000–2012 trajectory≠ Swedish ancestry

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

Browse places by community — income, education, race & ethnicity, language — all community cuts →

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Rock Island County, Illinois. Akashic. https://akashic.app/county/17161/. Accessed May 20, 2026. License: CC BY 4.0.

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Cities & towns in Rock Island County

Illinois at the ballot boxAll elections →

Presidentcounty detail2024 US Senatestatewide2022 Governorstate + county2022 US Houseall districts2024

Frequently asked questions

How did Rock Island County, Illinois vote in 2024?

In 2024, Rock Island County, Illinois voted Democratic by 9.6 points (D+9.6), carried by the Democratic candidate. Out of 63,458 votes cast, 34,126 went Democratic and 28,061 went Republican.

When did Rock Island County, Illinois last vote Republican?

The most recent presidential election in which Rock Island County, Illinois voted Republican was 1980.

How many people live in Rock Island County, Illinois?

Rock Island County, Illinois has a population of 142,757 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Rock Island County, Illinois?

Median household income in Rock Island County, Illinois is $67,159 — below the national median of $80,734. The Illinois state median is $83,390.

What is the political history of Rock Island County, Illinois?

Akashic tracks 38 presidential elections in Rock Island County, Illinois from 1876 to 2024. Of those, 20 went Democratic and 13 went Republican.

Measure

Rock Island County

Illinois

United States

Median age

40.3

39.1

Age 18–24

8.9%

9.1%

9.2%

Age 65 and older

20.4%

16.9%

17.2%

Measure

Rock Island County

Illinois

United States

Median household income

$67,159

$83,390

$84,427

Poverty rate

15.5%

11.8%

12.5%

Bachelor's degree or higher (25+)

24.7%

37.9%

35.6%

Measure

Rock Island County

Illinois

United States

Speaks a non-English language at home

13.8%

24.1%

22.3%

Spanish

7.3%

14.0%

13.6%

French (incl. Cajun & Haitian)

1.6%

0.3%

0.7%

Other Indo-European

1.1%

2.6%

2.0%

Other languages

1.8%

0.6%

0.8%

Measure

Rock Island County

Illinois

United States

Catholic

10.0%

24.2%

18.6%

Evangelical Protestant

8.0%

11.7%

16.5%

Unclaimed / not counted

68.2%

49.2%

51.5%

Mainline Protestant

7.2%

5.3%

5.2%

Key facts

2024 presidential margin

D+9.6MIT Election Lab

Population

142,7572024 5-year

Median household income

$67,1592024 5-year

White (non-Hispanic)

67.4%2024 5-year

Black

10.9%2024 5-year

Hispanic / Latino

14.2%2024 5-year

Peak Democratic margin

D+27.6 in 1964MIT Election Lab

Peak Republican margin

R+54.4 in 1920MIT Election Lab

Most similar

Mendocino County, CA · twin score 91.9

Election

Participants

CVAP

Turnout

Quality

2016 · Presidential

63,994

107,597

59.5%

C/A

2018 · Midterm

51,706

106,598

48.5%

A/A

2020 · Presidential

66,947

105,229

63.6%

C/A

2022 · Midterm

48,995

106,132

46.2%

C/A

2024 · Presidential

64,046

104,873

61.1%

A/A

Rock Island County precinct-level presidential election results for 2024

Precinct -ANDALUSIAANDALUSIA

519

892

1,450

35.8%

61.5%

R+25.7

Precinct -COAL VALLEY 3COAL VALLEY 3

617

751

1,405

43.9%

53.5%

R+9.5

Precinct -BLACKHAWK 3BLACKHAWK 3

609

608

1,243

49.0%

48.9%

D+0.1

Precinct -BOWLING 1BOWLING 1

468

734

1,238

37.8%

59.3%

R+21.5

Precinct -COECOE

395

708

1,130

35.0%

62.7%

R+27.7

Precinct -SOUTH MOLINE 4SOUTH MOLINE 4

569

465

1,063

53.5%

43.7%

D+9.8

Precinct -HAMPTON 1HAMPTON 1

387

546

953

40.6%

57.3%

R+16.7

Precinct -BLACKHAWK 7BLACKHAWK 7

461

410

900

51.2%

45.6%

D+5.7

Precinct -SOUTH MOLINE 29SOUTH MOLINE 29

522

314

877

59.5%

35.8%

D+23.7

Precinct -SOUTH MOLINE 9SOUTH MOLINE 9

441

396

865

51.0%

45.8%

D+5.2

Precinct -SOUTH ROCK ISLAND 12SOUTH ROCK ISLAND 12

472

334

825

57.2%

40.5%

D+16.7

Precinct -SOUTH MOLINE 13SOUTH MOLINE 13

453

344

824

55.0%

41.7%

D+13.2

Precinct -SOUTH MOLINE 11SOUTH MOLINE 11

441

323

797

55.3%

40.5%

D+14.8

Precinct -PORT BYRONPORT BYRON

336

426

784

42.9%

54.3%

R+11.5

Precinct -HAMPTON 17HAMPTON 17

377

386

779

48.4%

49.6%

R+1.2

Precinct -HAMPTON 14HAMPTON 14

454

298

777

58.4%

38.4%

D+20.1

Precinct -SOUTH MOLINE 7SOUTH MOLINE 7

413

337

770

53.6%

43.8%

D+9.9

Precinct -SOUTH ROCK ISLAND 13SOUTH ROCK ISLAND 13

425

318

763

55.7%

41.7%

D+14.0

Precinct -SOUTH ROCK ISLAND 3SOUTH ROCK ISLAND 3

493

226

747

66.0%

30.3%

D+35.7

Precinct -BLACKHAWK 4BLACKHAWK 4

315

404

741

42.5%

54.5%

R+12.0

Precinct -HAMPTON 2HAMPTON 2

320

405

739

43.3%

54.8%

R+11.5

Precinct -BOWLING 2BOWLING 2

290

410

718

40.4%

57.1%

R+16.7

Precinct -SOUTH MOLINE 17SOUTH MOLINE 17

407

280

704

57.8%

39.8%

D+18.0

Precinct -COAL VALLEY 1COAL VALLEY 1

292

383

695

42.0%

55.1%

R+13.1

Precinct -SOUTH ROCK ISLAND 5SOUTH ROCK ISLAND 5

426

245

686

62.1%

35.7%

D+26.4

Precinct -SOUTH ROCK ISLAND 14SOUTH ROCK ISLAND 14

390

257

674

57.9%

38.1%

D+19.7

Precinct -SOUTH MOLINE 8SOUTH MOLINE 8

302

341

669

45.1%

51.0%

R+5.8

Precinct -SOUTH ROCK ISLAND 11SOUTH ROCK ISLAND 11

358

284

662

54.1%

42.9%

D+11.2

Precinct -SOUTH MOLINE 18SOUTH MOLINE 18

394

251

659

59.8%

38.1%

D+21.7

Precinct -SOUTH MOLINE 19SOUTH MOLINE 19

323

314

657

49.2%

47.8%

D+1.4

Precinct -HAMPTON 16HAMPTON 16

310

320

648

47.8%

49.4%

R+1.5

Precinct -SOUTH MOLINE 6SOUTH MOLINE 6

346

272

646

53.6%

42.1%

D+11.5

Precinct -SOUTH ROCK ISLAND 6SOUTH ROCK ISLAND 6

397

232

643

61.7%

36.1%

D+25.7

Precinct -RURALRURAL

232

390

642

36.1%

60.7%

R+24.6

Precinct -SOUTH ROCK ISLAND 4SOUTH ROCK ISLAND 4

382

250

642

59.5%

38.9%

D+20.6

Precinct -SOUTH ROCK ISLAND 8SOUTH ROCK ISLAND 8

375

245

641

58.5%

38.2%

D+20.3

Precinct -SOUTH ROCK ISLAND 10SOUTH ROCK ISLAND 10

390

234

637

61.2%

36.7%

D+24.5

Precinct -SOUTH MOLINE 27SOUTH MOLINE 27

354

252

634

55.8%

39.7%

D+16.1

Precinct -ROCK ISLAND 10ROCK ISLAND 10

401

198

624

64.3%

31.7%

D+32.5

Precinct -SOUTH MOLINE 28SOUTH MOLINE 28

308

287

615

50.1%

46.7%

D+3.4

Precinct -MOLINE 3MOLINE 3

368

229

611

60.2%

37.5%

D+22.7

Precinct -HAMPTON 10HAMPTON 10

340

250

609

55.8%

41.1%

D+14.8

Precinct -MOLINE 4MOLINE 4

359

235

609

58.9%

38.6%

D+20.4

Precinct -HAMPTON 15HAMPTON 15

322

258

595

54.1%

43.4%

D+10.8

Precinct -SOUTH MOLINE 20SOUTH MOLINE 20

349

218

591

59.1%

36.9%

D+22.2

Precinct -MOLINE 5MOLINE 5

351

217

584

60.1%

37.2%

D+22.9

Precinct -MOLINE 9MOLINE 9

316

242

581

54.4%

41.7%

D+12.7

Precinct -BLACKHAWK 6BLACKHAWK 6

315

245

577

54.6%

42.5%

D+12.1

Precinct -SOUTH MOLINE 16SOUTH MOLINE 16

330

235

577

57.2%

40.7%

D+16.5

Precinct -SOUTH MOLINE 22SOUTH MOLINE 22

348

199

562

61.9%

35.4%

D+26.5

Precinct -HAMPTON 5HAMPTON 5

306

237

558

54.8%

42.5%

D+12.4

Precinct -MOLINE 20MOLINE 20

342

204

558

61.3%

36.6%

D+24.7

Precinct -SOUTH MOLINE 2SOUTH MOLINE 2

351

197

557

63.0%

35.4%

D+27.6

Precinct -MOLINE 16MOLINE 16

315

212

542

58.1%

39.1%

D+19.0

Precinct -HAMPTON 12HAMPTON 12

276

235

526

52.5%

44.7%

D+7.8

Precinct -ROCK ISLAND 15ROCK ISLAND 15

314

187

512

61.3%

36.5%

D+24.8

Precinct -MOLINE 11MOLINE 11

286

204

508

56.3%

40.2%

D+16.1

Precinct -MOLINE 18MOLINE 18

258

228

502

51.4%

45.4%

D+6.0

Precinct -SOUTH ROCK ISLAND 7SOUTH ROCK ISLAND 7

320

169

501

63.9%

33.7%

D+30.1

Precinct -MOLINE 13MOLINE 13

291

186

487

59.8%

38.2%

D+21.6

Precinct -CORDOVACORDOVA

156

313

485

32.2%

64.5%

R+32.4

Precinct -BUFFALO PRAIRIEBUFFALO PRAIRIE

134

332

477

28.1%

69.6%

R+41.5

Precinct -EDGINGTON 1EDGINGTON 1

153

310

473

32.3%

65.5%

R+33.2

Precinct -SOUTH MOLINE 24SOUTH MOLINE 24

236

216

468

50.4%

46.2%

D+4.3

Precinct -MOLINE 17MOLINE 17

259

185

462

56.1%

40.0%

D+16.0

Precinct -HAMPTON 11HAMPTON 11

256

190

458

55.9%

41.5%

D+14.4

Precinct -DRURYDRURY

123

313

446

27.6%

70.2%

R+42.6

Precinct -ZUMAZUMA

135

298

445

30.3%

67.0%

R+36.6

Precinct -SOUTH ROCK ISLAND 9SOUTH ROCK ISLAND 9

267

158

440

60.7%

35.9%

D+24.8

Precinct -SOUTH MOLINE 14SOUTH MOLINE 14

260

169

438

59.4%

38.6%

D+20.8

Precinct -COAL VALLEY 2COAL VALLEY 2

201

226

436

46.1%

51.8%

R+5.7

Precinct -MOLINE 2MOLINE 2

255

161

435

58.6%

37.0%

D+21.6

Precinct -MOLINE 10MOLINE 10

282

131

432

65.3%

30.3%

D+35.0

Precinct -SOUTH MOLINE 5SOUTH MOLINE 5

222

189

427

52.0%

44.3%

D+7.7

Precinct -HAMPTON 6HAMPTON 6

208

203

420

49.5%

48.3%

D+1.2

Precinct -SOUTH MOLINE 1SOUTH MOLINE 1

244

168

419

58.2%

40.1%

D+18.1

Precinct -ROCK ISLAND 6ROCK ISLAND 6

312

417

74.8%

20.6%

D+54.2

Precinct -SOUTH MOLINE 15SOUTH MOLINE 15

226

179

414

54.6%

43.2%

D+11.4

Precinct -MOLINE 8MOLINE 8

277

127

413

67.1%

30.8%

D+36.3

Precinct -SOUTH MOLINE 10SOUTH MOLINE 10

239

155

406

58.9%

38.2%

D+20.7

Precinct -MOLINE 1MOLINE 1

253

127

394

64.2%

32.2%

D+32.0

Precinct -BLACKHAWK 1BLACKHAWK 1

183

191

383

47.8%

49.9%

R+2.1

Precinct -MOLINE 7MOLINE 7

225

142

383

58.7%

37.1%

D+21.7

Precinct -MOLINE 15MOLINE 15

249

116

378

65.9%

30.7%

D+35.2

Precinct -MOLINE 6MOLINE 6

236

126

373

63.3%

33.8%

D+29.5

Precinct -ROCK ISLAND 9ROCK ISLAND 9

251

112

372

67.5%

30.1%

D+37.4

Precinct -SOUTH MOLINE 21SOUTH MOLINE 21

211

149

371

56.9%

40.2%

D+16.7

Precinct -BLACKHAWK 2BLACKHAWK 2

180

174

366

49.2%

47.5%

D+1.6

Precinct -SOUTH MOLINE 12SOUTH MOLINE 12

212

144

364

58.2%

39.6%

D+18.7

Precinct -SOUTH ROCK ISLAND 1SOUTH ROCK ISLAND 1

253

362

69.9%

26.2%

D+43.6

Precinct -EDGINGTON 2EDGINGTON 2

110

235

361

30.5%

65.1%

R+34.6

Precinct -SOUTH MOLINE 25SOUTH MOLINE 25

183

165

361

50.7%

45.7%

D+5.0

Precinct -BLACKHAWK 5BLACKHAWK 5

174

177

358

48.6%

49.4%

R+0.8

Precinct -ROCK ISLAND 12ROCK ISLAND 12

233

106

354

65.8%

29.9%

D+35.9

Precinct -SOUTH ROCK ISLAND 2SOUTH ROCK ISLAND 2

236

108

352

67.0%

30.7%

D+36.4

Precinct -SOUTH MOLINE 26SOUTH MOLINE 26

219

115

346

63.3%

33.2%

D+30.1

Precinct -SOUTH ROCK ISLAND 15SOUTH ROCK ISLAND 15

192

144

346

55.5%

41.6%

D+13.9

Precinct -SOUTH MOLINE 23SOUTH MOLINE 23

164

152

329

49.8%

46.2%

D+3.6

Precinct -HAMPTON 7HAMPTON 7

155

167

327

47.4%

51.1%

R+3.7

Precinct -ROCK ISLAND 14ROCK ISLAND 14

202

105

317

63.7%

33.1%

D+30.6

Precinct -ROCK ISLAND 5ROCK ISLAND 5

234

315

74.3%

24.4%

D+49.8

Precinct -HAMPTON 3HAMPTON 3

207

313

66.1%

30.4%

D+35.8

Precinct -SOUTH MOLINE 3SOUTH MOLINE 3

176

121

313

56.2%

38.7%

D+17.6

Precinct -ROCK ISLAND 13ROCK ISLAND 13

166

103

276

60.1%

37.3%

D+22.8

Precinct -ROCK ISLAND 7ROCK ISLAND 7

201

275

73.1%

23.6%

D+49.5

Precinct -MOLINE 12MOLINE 12

136

115

266

51.1%

43.2%

D+7.9

Precinct -MOLINE 19MOLINE 19

157

260

60.4%

37.3%

D+23.1

Precinct -CANOE CREEKCANOE CREEK

188

253

24.1%

74.3%

R+50.2

Precinct -HAMPTON 4HAMPTON 4

180

253

71.1%

25.7%

D+45.5

Precinct -ROCK ISLAND 8ROCK ISLAND 8

196

250

78.4%

18.8%

D+59.6

Precinct -ROCK ISLAND 3ROCK ISLAND 3

188

243

77.4%

20.2%

D+57.2

Precinct -HAMPTON 9HAMPTON 9

138

234

38.5%

59.0%

R+20.5

Precinct -HAMPTON 8HAMPTON 8

102

124

233

43.8%

53.2%

R+9.4

Precinct -MOLINE 14MOLINE 14

118

104

228

51.8%

45.6%

D+6.1

Precinct -HAMPTON 13HAMPTON 13

154

215

71.6%

25.6%

D+46.0

Precinct -ROCK ISLAND 1ROCK ISLAND 1

172

215

80.0%

17.2%

D+62.8

Precinct -SOUTH ROCK ISLAND 16SOUTH ROCK ISLAND 16

104

169

61.5%

34.3%

D+27.2

Precinct -ROCK ISLAND 11ROCK ISLAND 11

104

163

63.8%

33.1%

D+30.7

Precinct -ROCK ISLAND 2ROCK ISLAND 2

107

134

79.9%

17.2%

D+62.7

Precinct -ROCK ISLAND 4ROCK ISLAND 4

117

73.5%

25.6%

D+47.9

ANDALUSIA Voting District17_171611601

—

No votes

BLACKHAWK 1 Voting District17_171611101

—

No votes

BLACKHAWK 2 Voting District17_171611102

—

No votes

BLACKHAWK 3 Voting District17_171611103

—

No votes

BLACKHAWK 4 Voting District17_171611104

—

No votes

BLACKHAWK 5 Voting District17_171611105

—

No votes

BLACKHAWK 6 Voting District17_171611106

—

No votes

BLACKHAWK 7 Voting District17_171611107

—

No votes

BOWLING 1 Voting District17_171611401

—

No votes

BOWLING 2 Voting District17_171611402

—

No votes

BUFFALO PRAIRIE Voting District17_171611701

—

No votes

CANOE CREEK Voting District17_171610301

—

No votes

COAL VALLEY 1 Voting District17_171611201

—

No votes

COAL VALLEY 2 Voting District17_171611202

—

No votes

COAL VALLEY 3 Voting District17_171611203

—

No votes

COE Voting District17_171610201

—

No votes

CORDOVA Voting District17_171610101

—

No votes

DRURY Voting District17_171611801

—

No votes

EDGINGTON 1 Voting District17_171611501

—

No votes

EDGINGTON 2 Voting District17_171611502

—

No votes

HAMPTON 1 Voting District17_171610601

—

No votes

HAMPTON 10 Voting District17_171610610

—

No votes

HAMPTON 11 Voting District17_171610611

—

No votes

HAMPTON 12 Voting District17_171610612

—

No votes

HAMPTON 13 Voting District17_171610613

—

No votes

HAMPTON 14 Voting District17_171610614

—

No votes

HAMPTON 15 Voting District17_171610615

—

No votes

HAMPTON 16 Voting District17_171610616

—

No votes

HAMPTON 17 Voting District17_171610617

—

No votes

HAMPTON 2 Voting District17_171610602

—

No votes

HAMPTON 3 Voting District17_171610603

—

No votes

HAMPTON 4 Voting District17_171610604

—

No votes

HAMPTON 5 Voting District17_171610605

—

No votes

HAMPTON 6 Voting District17_171610606

—

No votes

HAMPTON 7 Voting District17_171610607

—

No votes

HAMPTON 8 Voting District17_171610608

—

No votes

HAMPTON 9 Voting District17_171610609

—

No votes

MOLINE 1-1 Voting District17_171610811

—

No votes

MOLINE 1-2 Voting District17_171610812

—

No votes

MOLINE 1-3 Voting District17_171610813

—

No votes

MOLINE 1-4 Voting District17_171610814

—

No votes

MOLINE 1-5 Voting District17_171610815

—

No votes

MOLINE 2-1 Voting District17_171610821

—

No votes

MOLINE 2-2 Voting District17_171610822

—

No votes

MOLINE 2-3 Voting District17_171610823

—

No votes

MOLINE 2-4 Voting District17_171610824

—

No votes

MOLINE 3-1 Voting District17_171610831

—

No votes

MOLINE 3-2 Voting District17_171610832

—

No votes

MOLINE 3-3 Voting District17_171610833

—

No votes

MOLINE 3-4 Voting District17_171610834

—

No votes

MOLINE 4-1 Voting District17_171610841

—

No votes

MOLINE 4-2 Voting District17_171610842

—

No votes

MOLINE 4-3 Voting District17_171610843

—

No votes

MOLINE 5-1 Voting District17_171610851

—

No votes

MOLINE 6-1 Voting District17_171610861

—

No votes

MOLINE 7-1 Voting District17_171610871

—

No votes

MOLINE 7-2 Voting District17_171610872

—

No votes

PORT BYRON Voting District17_171610501

—

No votes

ROCK ISLAND 1-1 Voting District17_171610911

—

No votes

ROCK ISLAND 2-1 Voting District17_171610921

—

No votes

ROCK ISLAND 2-2 Voting District17_171610922

—

No votes

ROCK ISLAND 3-1 Voting District17_171610931

—

No votes

ROCK ISLAND 3-2 Voting District17_171610932

—

No votes

ROCK ISLAND 4-1 Voting District17_171610941

—

No votes

ROCK ISLAND 4-2 Voting District17_171610942

—

No votes

ROCK ISLAND 4-3 Voting District17_171610943

—

No votes

ROCK ISLAND 5-1 Voting District17_171610951

—

No votes

ROCK ISLAND 5-2 Voting District17_171610952

—

No votes

ROCK ISLAND 6-1 Voting District17_171610961

—

No votes

ROCK ISLAND 6-2 Voting District17_171610962

—

No votes

ROCK ISLAND 6-3 Voting District17_171610963

—

No votes

ROCK ISLAND 7-1 Voting District17_171610971

—

No votes

ROCK ISLAND 7-2 Voting District17_171610972

—

No votes

RURAL Voting District17_171611301

—

No votes

SOUTH MOLINE 1 Voting District17_171610701

—

No votes

SOUTH MOLINE 10 Voting District17_171610710

—

No votes

SOUTH MOLINE 11 Voting District17_171610711

—

No votes

SOUTH MOLINE 12 Voting District17_171610712

—

No votes

SOUTH MOLINE 13 Voting District17_171610713

—

No votes

SOUTH MOLINE 14 Voting District17_171610714

—

No votes

SOUTH MOLINE 15 Voting District17_171610715

—

No votes

SOUTH MOLINE 16 Voting District17_171610716

—

No votes

SOUTH MOLINE 17 Voting District17_171610717

—

No votes

SOUTH MOLINE 18 Voting District17_171610718

—

No votes

SOUTH MOLINE 19 Voting District17_171610719

—

No votes

SOUTH MOLINE 2 Voting District17_171610702

—

No votes

SOUTH MOLINE 20 Voting District17_171610720

—

No votes

SOUTH MOLINE 21 Voting District17_171610721

—

No votes

SOUTH MOLINE 22 Voting District17_171610722

—

No votes

SOUTH MOLINE 23 Voting District17_171610723

—

No votes

SOUTH MOLINE 24 Voting District17_171610724

—

No votes

SOUTH MOLINE 25 Voting District17_171610725

—

No votes

SOUTH MOLINE 26 Voting District17_171610726

—

No votes

SOUTH MOLINE 27 Voting District17_171610727

—

No votes

SOUTH MOLINE 28 Voting District17_171610728

—

No votes

SOUTH MOLINE 29 Voting District17_171610729

—

No votes

SOUTH MOLINE 3 Voting District17_171610703

—

No votes

SOUTH MOLINE 4 Voting District17_171610704

—

No votes

SOUTH MOLINE 5 Voting District17_171610705

—

No votes

SOUTH MOLINE 6 Voting District17_171610706

—

No votes

SOUTH MOLINE 7 Voting District17_171610707

—

No votes

SOUTH MOLINE 8 Voting District17_171610708

—

No votes

SOUTH MOLINE 9 Voting District17_171610709

—

No votes

SOUTH ROCK ISLAND 1 Voting District17_171611001

—

No votes

SOUTH ROCK ISLAND 10 Voting District17_171611010

—

No votes

SOUTH ROCK ISLAND 11 Voting District17_171611011

—

No votes

SOUTH ROCK ISLAND 12 Voting District17_171611012

—

No votes

SOUTH ROCK ISLAND 13 Voting District17_171611013

—

No votes

SOUTH ROCK ISLAND 14 Voting District17_171611014

—

No votes

SOUTH ROCK ISLAND 15 Voting District17_171611015

—

No votes

SOUTH ROCK ISLAND 16 Voting District17_171611016

—

No votes

SOUTH ROCK ISLAND 2 Voting District17_171611002

—

No votes

SOUTH ROCK ISLAND 3 Voting District17_171611003

—

No votes

SOUTH ROCK ISLAND 4 Voting District17_171611004

—

No votes

SOUTH ROCK ISLAND 5 Voting District17_171611005

—

No votes

SOUTH ROCK ISLAND 6 Voting District17_171611006

—

No votes

SOUTH ROCK ISLAND 7 Voting District17_171611007

—

No votes

SOUTH ROCK ISLAND 8 Voting District17_171611008

—

No votes

SOUTH ROCK ISLAND 9 Voting District17_171611009

—

No votes

ZUMA Voting District17_171610401

—

No votes

Presidential margin, 1892–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
1892	−10.6%
1896	−21.6%
1900	−25.9%
1904	−45.4%
1908	−23.4%
1912	+10.5%
1916	−17.3%
1920	−54.4%
1924	−47.5%
1928	−30.9%
1932	+7.5%
1936	+25.0%
1940	+15.7%
1944	+11.3%
1948	+5.0%
1952	−8.3%
1956	−3.6%
1960	+1.9%
1964	+27.6%
1968	+5.8%
1972	−7.1%
1976	+2.8%
1980	−6.6%
1984	+6.7%
1988	+18.8%
1992	+19.7%
1996	+23.3%
2000	+19.6%
2004	+14.6%
2008	+24.6%
2012	+21.8%
2016	+8.3%
2020	+12.1%
2024	+9.6%

DemocraticRepublican

Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle; not shown when either cycle is estimated or under source review. vs U.S. · margin relative to the national result that year.

Year

Won

Democratic

Republican

Other

Margin

Swing

vs U.S.

Total

2024

53.8%Harris34,126

44.2%Trump28,061

1.7%Kennedy1,080

D+9.6

R+2.5

D+11.0

63,458

2020

54.8%Biden36,691

42.7%Trump28,603

1.4%Jorgensen959

D+12.1

D+3.8

D+7.6

66,947

2016

50.5%Clinton32,298

42.2%Trump26,998

4.7%Johnson3,015

D+8.3

R+13.5

D+6.2

63,994

2012

60.0%Obama39,157

38.2%Romney24,934

1.0%JOHNSON651

D+21.8

R+2.8

D+18.0

65,217

2008

61.7%Obama42,210

37.1%McCain25,364

1.2%

D+24.6

D+10.0

D+17.4

68,401

2004

57.0%Kerry39,880

42.4%Bush29,663

0.6%

D+14.6

R+5.0

D+17.1

69,972

2000

58.3%Gore37,957

38.7%Bush25,194

2.1%Nader1,364

D+19.6

R+3.7

D+19.1

65,095

1996

57.1%Clinton34,822

33.8%Dole20,626

8.4%Perot5,135

D+23.3

D+3.6

D+14.8

60,955

1992

51.9%Clinton37,412

32.2%Bush23,212

14.5%Perot10,416

D+19.7

D+0.9

D+14.2

72,039

1988

59.2%Dukakis40,174

40.4%Bush27,412

0.5%

D+18.8

D+12.1

D+26.5

67,901

1984

53.1%Mondale40,208

46.4%Reagan35,121

0.5%

D+6.7

D+13.3

D+24.9

75,672

1980

41.9%Carter30,045

48.5%Reagan34,788

9.7%

R+6.6

R+9.4

D+3.1

71,775

1976

50.5%Carter35,994

47.7%Ford34,007

1.8%

D+2.8

D+9.9

D+0.7

71,261

1972

46.3%McGovern32,529

53.4%Nixon37,548

0.4%

R+7.1

R+13.0

D+16.0

70,330

1968

49.2%Humphrey34,506

43.3%Nixon30,404

7.5%

D+5.8

R+21.7

D+6.5

70,140

1964

63.8%Johnson41,759

36.2%Goldwater23,714

0.0%

D+27.6

D+25.6

D+5.0

65,473

1960

50.9%Kennedy33,812

49.0%Nixon32,534

0.2%

D+1.9

D+5.5

D+1.8

66,454

1956

48.1%Stevenson29,145

51.7%Eisenhower31,342

0.2%

R+3.6

D+4.7

D+11.8

60,605

1952

45.8%Stevenson27,879

54.1%Eisenhower32,933

0.2%

R+8.3

R+13.3

D+2.5

60,912

1948

52.0%Truman24,542

47.0%Dewey22,192

1.0%

D+5.0

R+6.3

D+0.5

47,211

1944

55.5%Roosevelt30,102

44.2%Dewey23,980

0.3%

D+11.3

R+4.4

D+3.8

54,262

1940

57.7%Roosevelt35,240

41.9%Willkie25,629

0.4%

D+15.7

R+9.3

D+5.8

61,101

1936

61.7%Roosevelt32,741

36.7%Landon19,487

1.5%

D+25.0

D+17.5

D+0.7

53,027

1932

53.0%Roosevelt24,676

45.6%Hoover21,205

1.4%

D+7.5

D+38.4

R+10.3

46,549

1928

34.3%Smith14,334

65.2%Hoover27,246

0.5%

R+30.9

D+16.6

R+13.4

41,776

1924

10.2%Davis3,631

57.7%Coolidge20,563

31.8%La Follette11,320

R+47.5

D+6.9

R+22.3

35,647

1920

17.0%Cox5,208

71.3%Harding21,908

11.7%

R+54.4

R+37.0

R+28.2

30,719

1916

36.0%Wilson10,914

53.3%Hughes16,169

10.7%

R+17.3

R+27.8

R+20.5

30,322

1912

26.1%Wilson3,997

15.7%Taft2,394

58.2%

Roosevelt +32.1

D+33.9

R+9.1

15,289

1908

32.1%Bryan4,739

55.4%Taft8,196

12.5%

R+23.4

D+22.0

R+13.8

14,781

1904

16.3%Parker2,156

61.7%Roosevelt8,152

21.9%

R+45.4

R+19.5

R+25.7

13,203

1900

35.3%Bryan4,786

61.2%McKinley8,299

3.5%

R+25.9

R+4.3

R+18.4

13,556

1896

38.5%Bryan4,692

60.1%McKinley7,323

1.4%

R+21.6

R+11.0

R+15.5

12,191

1892

41.8%Cleveland4,034

52.4%Harrison5,052

5.8%

R+10.6

—

R+12.2

9,645

1888

—

No data

—

1884

—

No data

—

1880

—

No data

—

1876

—

No data

—

Source · Akashic actual-race rollup from certified returns, House; geographic aggregation.

Year

Vote lead

Democratic

Republican

Total

2024

57.9%36,503

42.1%26,526

63,029

2020

56.8%37,651

43.2%28,694

66,345

2018

67.2%1,277

32.8%622

1,899

Sources · MIT Election Data and Science Lab (MEDSL); Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC BY 4.0 / CC0 1.0.

Year

Vote lead

Democratic

Republican

Total

2022

55.2%26,469

42.8%20,548

47,972

2020Class II

55.2%Dick Durbin36,493

41.9%Mark Curran27,705

66,163

2016Class III

52.4%Tammy Duckworth32,952

42.6%Mark Kirk26,767

62,903

2014Class II

53.6%Dick Durbin24,143

43.1%Jim Oberweis19,406

45,010

2010Class III

44.3%Alex Giannoulias20,445

50.3%Mark Kirk23,249

46,203

2008Class II

66.5%Dick Durbin44,418

30.2%Steve Sauerberg20,172

66,830

2004Class III

71.1%Barack Obama49,096

27.0%Alan Keyes18,620

69,072

2002Class II

63.1%Dick Durbin26,998

35.3%Jim Durkin15,096

42,757

1998Class III

41.6%Carol Moseley-Braun19,615

55.1%Peter Fitzgerald25,998

47,203

1996Class II

57.7%Dick Durbin34,604

39.0%Al Salvi23,431

60,004

1992Class III

53.1%Carol Moseley-Braun37,465

42.7%Richard Williamson30,072

70,504

1990Class II

68.9%Paul Simon30,579

31.1%Lynn Martin13,824

44,403

1986Class III

68.1%Alan J. Dixon30,220

30.8%Judy Koehler13,687

44,378

1984Class II

55.4%Paul Simon41,470

43.4%Charles H. Percy32,524

74,859

1980Class III

57.2%Alan J. Dixon38,372

41.6%David C. O'Neal27,915

67,107

1978Class II

44.3%Alex Seith18,370

54.6%Charles H. Percy22,641

41,494

1974Class III

65.2%Adlai Stevenson III28,282

34.4%George M. Burditt14,903

43,355

1972Class II

38.3%Roman Pucinski26,393

61.3%Charles H. Percy42,225

68,853

1968Class III

44.5%William G. Clark29,945

55.0%Everett Dirksen37,044

67,319

1966Class II

48.7%Paul H. Douglas24,258

51.3%Charles H. Percy25,550

49,808

1962Class III

46.2%Sidney R. Yates20,451

53.8%Everett Dirksen23,849

44,300

1960Class II

56.5%Paul H. Douglas36,647

43.4%Samuel W. Witwer28,154

64,870

1956Class III

56.6%Richard Stengel33,653

43.3%Everett Dirksen25,723

59,464

1954Class II

56.6%Paul H. Douglas25,291

43.4%Joseph T. Meek19,390

44,681

1950Class III

45.3%Scott W. Lucas18,298

54.3%Everett Dirksen21,944

40,435

1948Class II

55.0%Paul H. Douglas25,572

44.4%C. Wayland Brooks20,646

46,477

1944Class III

56.7%Scott W. Lucas30,366

43.0%Richard J. Lyons23,046

53,587

1942Class II

46.9%Raymond McKeough19,460

52.8%C. Wayland Brooks21,876

41,467

1938Class III

50.9%Scott W. Lucas19,869

48.9%Richard J. Lyons19,096

39,031

1936Class II

61.3%James H. Lewis31,328

37.2%Otis F. Glenn19,032

51,107

1932Class III

51.3%William H. Dieterich22,516

47.6%Otis F. Glenn20,903

43,881

1930Class II

59.8%James H. Lewis18,432

34.7%Ruth H. McCormick10,677

30,799

1926Class III

36.7%George E. Brennan7,920

58.3%Frank L. Smith12,588

21,589

1924Class II

22.5%Albert A. Sprague6,583

76.3%Charles S. Deneen22,343

29,267

1920Class III

19.3%Peter A. Waller5,897

69.7%William B. McKinley21,318

30,579

1918Class II

36.1%James H. Lewis4,643

52.1%Medill McCormick6,701

12,861

1914Class III

27.9%Roger C. Sullivan4,055

44.7%Lawrence Y. Sherman6,480

14,511

Source · Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC0 1.0.

Year

Vote lead

Democratic

Republican

Total

1970Special · Class III

60.6%Adlai Stevenson III29,777

39.1%Ralph T. Smith19,191

49,137

1940Special · Class II

55.8%James M. Slattery32,959

43.9%C. Wayland Brooks25,899

59,038

1928Special · Class III

35.4%Anton J. Cermak13,271

64.2%Otis F. Glenn24,058

37,466

Sources · MIT Election Data and Science Lab (MEDSL); Amlani & Algara 2021 (Harvard Dataverse doi:10.7910/DVN/DGUMFI); upstream CQ Press + ICPSR · CC BY 4.0 / CC0 1.0.

Year

Vote lead

Democratic

Republican

Total

2022

53.2%Jb Pritzker25,663

43.8%Darren Bailey21,130

48,203

2018

50.8%Jb Pritzker25,774

42.3%Bruce Rauner21,434

50,699

2014

45.6%Pat Quinn20,495

50.5%Bruce Rauner22,680

44,940

2010

44.2%Pat Quinn20,514

49.4%Bill Brady22,904

46,363

2006

56.7%Rod Blagojevich26,201

37.1%Judy Baar Topinka17,168

46,229

2002

54.3%Rod Blagojevich23,193

43.1%Jim Ryan18,382

42,679

1998

46.5%Glenn Poshard22,051

52.1%George Ryan24,733

47,435

1994

34.1%Dawn Clark Netsch14,238

64.4%Jim Edgar26,901

41,790

1990

53.0%Neil Hartigan23,572

45.9%Jim Edgar20,413

44,461

1986

—

10.6%''No nominee''4,700

40.5%Jim Thompson18,023

44,498

1982

54.4%Adlai Stevenson III30,217

43.6%Jim Thompson24,212

55,595

1978

42.0%Michael Bakalis17,439

56.9%Jim Thompson23,618

41,506

1976

32.9%Michael Howlett22,846

66.3%Jim Thompson45,970

69,356

Frequently asked questions

Voter registration in Rock Island County, IL
Year	Total registered
2016	100,163
2018	100,163
2020	91,852
2022	87,406
2024	90,276

How did Rock Island County, Illinois vote in 2024?

In 2024, Rock Island County, Illinois voted Democratic by 9.6 points (D+9.6), carried by the Democratic candidate. Out of 63,458 votes cast, 34,126 went Democratic and 28,061 went Republican.

When did Rock Island County, Illinois last vote Republican?

The most recent presidential election in which Rock Island County, Illinois voted Republican was 1980.

How many people live in Rock Island County, Illinois?

Rock Island County, Illinois has a population of 142,757 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Rock Island County, Illinois?

Median household income in Rock Island County, Illinois is $67,159 — below the national median of $80,734. The Illinois state median is $83,390.

What is the political history of Rock Island County, Illinois?

Akashic tracks 38 presidential elections in Rock Island County, Illinois from 1876 to 2024. Of those, 20 went Democratic and 13 went Republican.