HarrisDemocratic27.8%1,773TrumpRepublican70.0%4,464KennedyIndependent2.1%134
R+42.2- Lead
- 2,691
- Total
- 6,374
- vs nation
- R+40.7
- Turnout
- 64.0%
Akashiccounty
Mason County, IL
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
2024 turnout 64.0% of 10,076 citizens 18+
BidenDemocratic29.3%1,985TrumpRepublican68.6%4,654JorgensenLibertarian1.1%78
R+39.3- Lead
- 2,669
- Total
- 6,785
- vs nation
- R+43.8
- Turnout
- 64.0%
ClintonDemocratic31.0%2,014TrumpRepublican62.5%4,058JohnsonLibertarian4.9%321
R+31.5- Lead
- 2,044
- Total
- 6,493
- vs nation
- R+33.6
- Turnout
- 59.4%
ObamaDemocratic45.5%2,867RomneyRepublican51.9%3,265JOHNSONLibertarian1.3%83
R+6.3- Lead
- 398
- Total
- 6,296
- vs nation
- R+10.2
- Turnout
- —
ObamaDemocratic52.0%3,542McCainRepublican46.1%3,141OtherAll other candidates1.8%125
D+5.9- Lead
- 401
- Total
- 6,808
- vs nation
- R+1.4
- Turnout
- —
KerryDemocratic44.8%3,215BushRepublican54.4%3,907OtherAll other candidates0.8%61
R+9.6- Lead
- 692
- Total
- 7,183
- vs nation
- R+7.2
- Turnout
- —
GoreDemocratic47.1%3,192BushRepublican50.4%3,411NaderGreen1.7%117
R+3.2- Lead
- 219
- Total
- 6,772
- vs nation
- R+3.8
- Turnout
- —
ClintonDemocratic52.5%3,385DoleRepublican37.7%2,430PerotReform9.3%600
D+14.8- Lead
- 955
- Total
- 6,444
- vs nation
- D+6.3
- Turnout
- —
Key facts
- 2024 presidential margin
- R+42.2MIT Election Lab
- Population
- 12,7452024 5-year
- Median household income
- $62,8452024 5-year
- White (non-Hispanic)
- 94.2%2024 5-year
- Black
- 0.5%2024 5-year
- Hispanic / Latino
- 1.6%2024 5-year
- Peak Democratic margin
- D+37.7 in 1932MIT Election Lab
- Peak Republican margin
- R+42.2 in 2024MIT Election Lab
- Most similar
- Vermillion County, IN · twin score 91.4
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
- 64.0%6,445 participants ÷ 10,076 CVAP
- 2020→2022 drop-off
- +15.1 ptsVolatile
- Drop-off versus state
- -6.9 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 48.8%–51.3%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 6,493 | 10,936 | 59.4% | C/A |
| 2018 · Midterm | 5,367 | 10,895 | 49.3% | A/A |
| 2020 · Presidential | 6,832 | 10,678 | 64.0% | A/A |
| 2022 · Midterm | 5,062 | 10,362 | 48.9% | C/A |
| 2024 · Presidential | 6,445 | 10,076 | 64.0% | 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 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 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
43 precincts · 6,445 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -MANITO 1MANITO 1 | 162 | 373 | 25 | 560 | 28.9% | 66.6% | R+37.7 |
|---|---|---|---|---|---|---|---|
| Precinct -MANITO 2MANITO 2 | 132 | 357 | 15 | 504 | 26.2% | 70.8% | R+44.6 |
| Precinct -HAVANA 6HAVANA 6 | 111 | 340 | 15 | 466 | 23.8% | 73.0% | R+49.1 |
| Precinct -MASON CITY 3MASON CITY 3 | 128 | 291 | 10 | 429 | 29.8% | 67.8% | R+38.0 |
| Precinct -HAVANA 4HAVANA 4 | 141 | 266 | 16 | 423 | 33.3% | 62.9% | R+29.6 |
| Precinct -BATHBATH | 96 | 290 | 12 | 398 | 24.1% | 72.9% | R+48.7 |
| Precinct -MASON CITY 1MASON CITY 1 | 113 | 274 | 11 | 398 | 28.4% | 68.8% | R+40.5 |
| Precinct -HAVANA 1HAVANA 1 | 123 | 232 | 15 | 370 | 33.2% | 62.7% | R+29.5 |
| Precinct -MASON CITY 2MASON CITY 2 | 112 | 218 | 11 | 341 | 32.8% | 63.9% | R+31.1 |
| Precinct -HAVANA 5HAVANA 5 | 99 | 230 | 9 | 338 | 29.3% | 68.0% | R+38.8 |
| Precinct -QUIVERQUIVER | 107 | 209 | 8 | 324 | 33.0% | 64.5% | R+31.5 |
| Precinct -HAVANA 2HAVANA 2 | 74 | 179 | 13 | 266 | 27.8% | 67.3% | R+39.5 |
| Precinct -HAVANA 3HAVANA 3 | 66 | 189 | 10 | 265 | 24.9% | 71.3% | R+46.4 |
| Precinct -SHERMANSHERMAN | 55 | 181 | 6 | 242 | 22.7% | 74.8% | R+52.1 |
| Precinct -KILBOURNEKILBOURNE | 43 | 186 | 5 | 234 | 18.4% | 79.5% | R+61.1 |
| Precinct -ALLENS GROVEALLENS GROVE | 61 | 164 | 8 | 233 | 26.2% | 70.4% | R+44.2 |
| Precinct -FOREST CITYFOREST CITY | 51 | 157 | 6 | 214 | 23.8% | 73.4% | R+49.5 |
| Precinct -SALT CREEKSALT CREEK | 38 | 93 | 6 | 137 | 27.7% | 67.9% | R+40.1 |
| Precinct -LYNCHBURGLYNCHBURG | 30 | 92 | 4 | 126 | 23.8% | 73.0% | R+49.2 |
| Precinct -CRANE CREEKCRANE CREEK | 13 | 74 | 2 | 89 | 14.6% | 83.1% | R+68.5 |
| Precinct -PENNSYLVANIAPENNSYLVANIA | 18 | 69 | 1 | 88 | 20.5% | 78.4% | R+58.0 |
| ALLENS GROVE 1 Voting District17_17125AG01 | 0 | 0 | 0 | 0 | — | — | No votes |
| BATH 1 Voting District17_17125BT01 | 0 | 0 | 0 | 0 | — | — | No votes |
| BATH 2 Voting District17_17125BT02 | 0 | 0 | 0 | 0 | — | — | No votes |
| CRANE CREEK Voting District17_17125CC01 | 0 | 0 | 0 | 0 | — | — | No votes |
| FOREST CITY Voting District17_17125FC01 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 1 Voting District17_17125HV01 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 2 Voting District17_17125HV02 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 3 Voting District17_17125HV03 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 4 Voting District17_17125HV04 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 5 Voting District17_17125HV05 | 0 | 0 | 0 | 0 | — | — | No votes |
| HAVANA 6 Voting District17_17125HV06 | 0 | 0 | 0 | 0 | — | — | No votes |
| KILBOURNE 1 Voting District17_17125KB01 | 0 | 0 | 0 | 0 | — | — | No votes |
| LYNCHBURG Voting District17_17125LB01 | 0 | 0 | 0 | 0 | — | — | No votes |
| MANITO 1 Voting District17_17125MA01 | 0 | 0 | 0 | 0 | — | — | No votes |
| MANITO 2 Voting District17_17125MA02 | 0 | 0 | 0 | 0 | — | — | No votes |
| MASON CITY 1 Voting District17_17125MC01 | 0 | 0 | 0 | 0 | — | — | No votes |
| MASON CITY 2 Voting District17_17125MC02 | 0 | 0 | 0 | 0 | — | — | No votes |
| MASON CITY 3 Voting District17_17125MC03 | 0 | 0 | 0 | 0 | — | — | No votes |
| PENNSYLVANIA Voting District17_17125PN01 | 0 | 0 | 0 | 0 | — | — | No votes |
| QUIVER Voting District17_17125QU01 | 0 | 0 | 0 | 0 | — | — | No votes |
| SALT CREEK Voting District17_17125SC01 | 0 | 0 | 0 | 0 | — | — | No votes |
| SHERMAN Voting District17_17125SH01 | 0 | 0 | 0 | 0 | — | — | No votes |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +14.8% |
| 1896 | +6.7% |
| 1900 | +10.4% |
| 1904 | +0.2% |
| 1908 | +7.7% |
| 1912 | +29.7% |
| 1916 | +12.0% |
| 1920 | −19.0% |
| 1924 | −14.8% |
| 1928 | −9.8% |
| 1932 | +37.7% |
| 1936 | +21.6% |
| 1940 | −1.4% |
| 1944 | −9.3% |
| 1948 | −0.3% |
| 1952 | −23.9% |
| 1956 | −18.7% |
| 1960 | −6.3% |
| 1964 | +26.3% |
| 1968 | −6.8% |
| 1972 | −25.6% |
| 1976 | +1.3% |
| 1980 | −25.5% |
| 1984 | −10.1% |
| 1988 | −0.3% |
| 1992 | +19.4% |
| 1996 | +14.8% |
| 2000 | −3.2% |
| 2004 | −9.6% |
| 2008 | +5.9% |
| 2012 | −6.3% |
| 2016 | −31.5% |
| 2020 | −39.3% |
| 2024 | −42.2% |
DemocraticRepublican
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.
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.
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.
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.
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 10,127 |
| 2018 | 9,901 |
| 2020 | 9,445 |
| 2022 | 9,824 |
| 2024 | 9,535 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+27 net domestic migration · 2025
20112025
Net −919 over 2011–2025 · gain loss
Arrivals reported $51,675 in average income, against $68,733 for residents who stayed — 25% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+24.8 on average — 17 points more Democratic-leaning than Mason County, IL itself (R+42.2).
Where arrivals came from lean of each source
- Tazewell County, IL85R+26.6
- Logan County, IL26R+41.5
- Peoria County, IL20D+4.6
Where departures went households, 2022–23
- Tazewell County, IL83
- Fulton County, IL30
- Logan County, IL30
- Sangamon County, IL23
- Peoria County, IL21
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.
| Year | Net domestic migration |
|---|---|
| 2011 | −130 |
| 2012 | −97 |
| 2013 | −103 |
| 2014 | −8 |
| 2015 | −183 |
| 2016 | −123 |
| 2017 | +38 |
| 2018 | −77 |
| 2019 | −128 |
| 2021 | −86 |
| 2022 | −1 |
| 2023 | −57 |
| 2024 | +9 |
| 2025 | +27 |
Mason County's population of roughly 16,000 sits along the Illinois River bottomlands, and its electorate has shifted decisively rightward over successive presidential cycles, posting a 42-point Republican margin in 2024.
Across the recorded series it reached a Democratic high of 37.7 points in 1932 and a Republican high of 42.2 points in 2024. Between 2020 and 2024 the county moved 2.9 points toward the Republican candidate; the 2024 margin was 42.2 points.
A population of 12,745, a 94% non-Hispanic-white share, and a median household income of $62,845 describe the county. The county's voting pattern over the last decade is most similar to that of Vermillion County and Starke County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Vermillion County
Indiana
91.4twin score
12-yr trendelasticity2008 margin≠ Scottish ancestry
Starke County
Indiana
90.1twin score
12-yr trendelasticity2000–2008 trajectory≠ English ancestry
Schuyler County
Illinois
87.5twin score
12-yr trendelasticity2008 margin≠ Scottish 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.
Mason County, Illinois. Akashic. https://akashic.app/county/17125/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
Cities & towns in Mason County
Illinois at the ballot boxAll elections →
Frequently asked questions
How did Mason County, Illinois vote in 2024?
In 2024, Mason County, Illinois voted Republican by 42.2 points (R+42.2), carried by the Republican candidate. Out of 6,374 votes cast, 1,773 went Democratic and 4,464 went Republican.
When did Mason County, Illinois last vote Democratic?
The most recent presidential election in which Mason County, Illinois voted Democratic was 2008.
How many people live in Mason County, Illinois?
Mason County, Illinois has a population of 12,745 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mason County, Illinois?
Median household income in Mason County, Illinois is $62,845 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Mason County, Illinois?
Akashic tracks 38 presidential elections in Mason County, Illinois from 1876 to 2024. Of those, 14 went Democratic and 20 went Republican.