HarrisDemocratic31.0%6,473TrumpRepublican67.2%14,055KennedyIndependent1.7%361
R+36.3- Lead
- 7,582
- Total
- 20,902
- vs nation
- R+34.8
- Turnout
- 77.5%
Akashiccounty
Monroe 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 77.5% of 27,236 citizens 18+
BidenDemocratic31.0%6,569TrumpRepublican66.7%14,142JorgensenLibertarian1.5%309
R+35.7- Lead
- 7,573
- Total
- 21,206
- vs nation
- R+40.2
- Turnout
- 79.4%
ClintonDemocratic28.6%5,535TrumpRepublican65.3%12,629JohnsonLibertarian3.8%742
R+36.7- Lead
- 7,094
- Total
- 19,354
- vs nation
- R+38.7
- Turnout
- 74.9%
ObamaDemocratic35.5%6,215RomneyRepublican62.2%10,888JOHNSONLibertarian1.3%233
R+26.7- Lead
- 4,673
- Total
- 17,494
- vs nation
- R+30.6
- Turnout
- —
ObamaDemocratic44.0%7,953McCainRepublican54.6%9,881OtherAll other candidates1.4%249
R+10.7- Lead
- 1,928
- Total
- 18,083
- vs nation
- R+17.9
- Turnout
- —
KerryDemocratic41.5%6,788BushRepublican57.8%9,468OtherAll other candidates0.7%114
R+16.4- Lead
- 2,680
- Total
- 16,370
- vs nation
- R+13.9
- Turnout
- —
GoreDemocratic42.0%5,797BushRepublican55.3%7,632NaderGreen1.9%262
R+13.3- Lead
- 1,835
- Total
- 13,796
- vs nation
- R+13.8
- Turnout
- —
ClintonDemocratic41.6%4,798DoleRepublican46.4%5,350PerotReform11.1%1,276
R+4.8- Lead
- 552
- Total
- 11,535
- vs nation
- R+13.3
- Turnout
- —
Key facts
- 2024 presidential margin
- R+36.3MIT Election Lab
- Population
- 35,0362024 5-year
- Median household income
- $102,8802024 5-year
- White (non-Hispanic)
- 95.0%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 1.9%2024 5-year
- Peak Democratic margin
- D+28.9 in 1932MIT Election Lab
- Peak Republican margin
- R+48.0 in 1920MIT Election Lab
- Most similar
- Geauga County, OH · twin score 76.1
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
- 77.5%21,117 participants ÷ 27,236 CVAP
- 2020→2022 drop-off
- +20.6 ptsPresidential-dependent
- Drop-off versus state
- -1.5 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 56.9%–60.5%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 19,354 | 25,835 | 74.9% | C/A |
| 2018 · Midterm | 16,038 | 26,101 | 61.4% | A/A |
| 2020 · Presidential | 21,206 | 26,693 | 79.4% | C/A |
| 2022 · Midterm | 15,969 | 27,137 | 58.8% | C/A |
| 2024 · Presidential | 21,117 | 27,236 | 77.5% | 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
62 precincts · 21,117 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -11 | 430 | 744 | 34 | 1,208 | 35.6% | 61.6% | R+26.0 |
|---|---|---|---|---|---|---|---|
| Precinct -99 | 376 | 741 | 30 | 1,147 | 32.8% | 64.6% | R+31.8 |
| Precinct -2121 | 301 | 810 | 33 | 1,144 | 26.3% | 70.8% | R+44.5 |
| Precinct -2323 | 255 | 781 | 23 | 1,059 | 24.1% | 73.7% | R+49.7 |
| Precinct -1818 | 294 | 696 | 26 | 1,016 | 28.9% | 68.5% | R+39.6 |
| Precinct -1212 | 320 | 664 | 25 | 1,009 | 31.7% | 65.8% | R+34.1 |
| Precinct -2424 | 173 | 812 | 22 | 1,007 | 17.2% | 80.6% | R+63.5 |
| Precinct -1717 | 259 | 657 | 22 | 938 | 27.6% | 70.0% | R+42.4 |
| Precinct -2222 | 230 | 610 | 28 | 868 | 26.5% | 70.3% | R+43.8 |
| Precinct -1111 | 300 | 544 | 23 | 867 | 34.6% | 62.7% | R+28.1 |
| Precinct -77 | 329 | 495 | 31 | 855 | 38.5% | 57.9% | R+19.4 |
| Precinct -22 | 320 | 484 | 27 | 831 | 38.5% | 58.2% | R+19.7 |
| Precinct -2525 | 162 | 649 | 15 | 826 | 19.6% | 78.6% | R+59.0 |
| Precinct -1414 | 296 | 479 | 23 | 798 | 37.1% | 60.0% | R+22.9 |
| Precinct -1919 | 189 | 584 | 20 | 793 | 23.8% | 73.6% | R+49.8 |
| Precinct -55 | 252 | 511 | 23 | 786 | 32.1% | 65.0% | R+33.0 |
| Precinct -88 | 265 | 460 | 35 | 760 | 34.9% | 60.5% | R+25.7 |
| Precinct -1313 | 213 | 481 | 17 | 711 | 30.0% | 67.7% | R+37.7 |
| Precinct -2020 | 182 | 509 | 13 | 704 | 25.9% | 72.3% | R+46.4 |
| Precinct -33 | 284 | 375 | 27 | 686 | 41.4% | 54.7% | R+13.3 |
| Precinct -1616 | 215 | 442 | 11 | 668 | 32.2% | 66.2% | R+34.0 |
| Precinct -66 | 223 | 421 | 23 | 667 | 33.4% | 63.1% | R+29.7 |
| Precinct -1515 | 197 | 423 | 19 | 639 | 30.8% | 66.2% | R+35.4 |
| Precinct -44 | 240 | 361 | 19 | 620 | 38.7% | 58.2% | R+19.5 |
| Precinct -1010 | 168 | 322 | 20 | 510 | 32.9% | 63.1% | R+30.2 |
| PRECINCT 117_1713300001 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1017_1713300010 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1117_1713300011 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1217_1713300012 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1317_1713300013 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1417_1713300014 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1517_1713300015 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1617_1713300016 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1717_1713300017 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1817_1713300018 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 1917_1713300019 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 217_1713300002 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2017_1713300020 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2117_1713300021 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2217_1713300022 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2317_1713300023 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2417_1713300024 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2517_1713300025 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2617_1713300026 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2717_1713300027 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2817_1713300028 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 2917_1713300029 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 317_1713300003 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3017_1713300030 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3117_1713300031 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3217_1713300032 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3317_1713300033 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3417_1713300034 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3517_1713300035 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3617_1713300036 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 3717_1713300037 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 417_1713300004 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 517_1713300005 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 617_1713300006 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 717_1713300007 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 817_1713300008 | 0 | 0 | 0 | 0 | — | — | No votes |
| PRECINCT 917_1713300009 | 0 | 0 | 0 | 0 | — | — | No votes |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +15.9% |
| 1896 | +6.6% |
| 1900 | +6.7% |
| 1904 | −5.9% |
| 1908 | −6.8% |
| 1912 | −1.1% |
| 1916 | −14.5% |
| 1920 | −48.0% |
| 1924 | −20.7% |
| 1928 | +3.8% |
| 1932 | +28.9% |
| 1936 | +3.7% |
| 1940 | −25.4% |
| 1944 | −32.1% |
| 1948 | −25.3% |
| 1952 | −30.1% |
| 1956 | −28.1% |
| 1960 | −16.4% |
| 1964 | +7.8% |
| 1968 | −24.7% |
| 1972 | −37.2% |
| 1976 | −16.7% |
| 1980 | −32.2% |
| 1984 | −36.0% |
| 1988 | −16.1% |
| 1992 | +0.7% |
| 1996 | −4.8% |
| 2000 | −13.3% |
| 2004 | −16.4% |
| 2008 | −10.7% |
| 2012 | −26.7% |
| 2016 | −36.7% |
| 2020 | −35.7% |
| 2024 | −36.3% |
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 | 26,081 |
| 2018 | 26,442 |
| 2020 | 32,019 |
| 2022 | 23,943 |
| 2024 | 29,966 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−86 net domestic migration · 2025
20112025
Net +1,594 over 2011–2025 · gain loss
Arrivals reported $77,134 in average income, against $109,861 for residents who stayed — 30% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+4.4 on average — 41 points more Democratic-leaning than Monroe County, IL itself (R+36.3).
Where arrivals came from lean of each source
- St. Clair County, IL218D+7.8
- St. Louis County, MO124D+23.4
- Randolph County, IL60R+50.0
- St. Louis city, MO38D+64.6
- Jefferson County, MO37R+36.7
- Madison County, IL34R+13.2
Where departures went households, 2022–23
- St. Clair County, IL168
- St. Louis County, MO118
- Randolph County, IL52
- St. Louis city, MO39
- Jefferson County, MO36
- Madison County, IL34
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 | +185 |
| 2012 | +4 |
| 2013 | +172 |
| 2014 | +33 |
| 2015 | +164 |
| 2016 | +99 |
| 2017 | +183 |
| 2018 | +159 |
| 2019 | +227 |
| 2021 | +94 |
| 2022 | +148 |
| 2023 | +172 |
| 2024 | +40 |
| 2025 | −86 |
Tucked along the Mississippi south of St. Louis, Monroe County has shifted steadily rightward over two decades, delivering a 36-point Republican presidential margin in 2024 despite sitting within commuting distance of a major metro area.
Across the recorded series it reached a Democratic high of 28.9 points in 1932 and a Republican high of 48.0 points in 1920. Between 2020 and 2024 the county moved 0.6 points toward the Republican candidate; the 2024 margin was 36.3 points.
A population of 35,036, a 95% non-Hispanic-white share, and a median household income of $102,880 describe the county. The county's voting pattern over the last decade is most similar to that of Geauga County and Washington County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Geauga County
Ohio
76.1twin score
median incomecollege share% White≠ % Catholic
Washington County
Wisconsin
71.5twin score
median incomecollege share% White≠ 2000 margin
St. Charles County
Missouri
69.8twin score
median incomecollege share% Catholic≠ population scale
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.
Monroe County, Illinois. Akashic. https://akashic.app/county/17133/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Monroe County
Illinois at the ballot boxAll elections →
Frequently asked questions
How did Monroe County, Illinois vote in 2024?
In 2024, Monroe County, Illinois voted Republican by 36.3 points (R+36.3), carried by the Republican candidate. Out of 20,902 votes cast, 6,473 went Democratic and 14,055 went Republican.
When did Monroe County, Illinois last vote Democratic?
The most recent presidential election in which Monroe County, Illinois voted Democratic was 1992.
How many people live in Monroe County, Illinois?
Monroe County, Illinois has a population of 35,036 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Monroe County, Illinois?
Median household income in Monroe County, Illinois is $102,880 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Monroe County, Illinois?
Akashic tracks 38 presidential elections in Monroe County, Illinois from 1876 to 2024. Of those, 8 went Democratic and 26 went Republican.