Johnson County, Illinois
AkashicJohnson County, ILTrumpR+58.3
2024 precinct map of Johnson CountyPrecinct-level 2024 presidential results for Johnson County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Donald Trump ✓Republican | 78.6% | 4,798 |
|---|---|---|
| Kamala HarrisDemocratic | 20.3% | 1,241 |
| Robert F Kennedy Jr.Independent | 1.0% | 64 |
Harris +50Trump +50
16 precincts · 6,103 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 20.3%Harris1,241 | 78.6%Trump4,798 | 1.0%Kennedy64 | 6,103 | ||
| R | 19.9%Biden1,281 | 78.4%Trump5,059 | 0.8%Jorgensen53 | 6,450 | ||
| R | 18.8%Clinton1,142 | 76.4%Trump4,649 | 3.0%Johnson182 | 6,089 | ||
| R | 27.6%Obama1,572 | 69.6%Romney3,963 | 1.5%JOHNSON87 | 5,694 | ||
| R | 31.7%Obama1,871 | 66.3%McCain3,912 | 2.0%Nader118 | 5,901 | ||
| R | 30.9%Kerry1,813 | 68.2%Bush3,997 | 0.9%Badnarik55 | 5,865 | ||
| R | 36.0%Gore1,928 | 61.3%Bush3,285 | 1.5%Nader83 | 5,362 | ||
| R | 40.8%Clinton2,009 | 45.5%Dole2,241 | 13.0%Perot640 | 4,930 | ||
| D | 42.6%Clinton2,299 | 39.4%Bush2,124 | 17.5%Perot944 | 5,391 | ||
| R | 39.9%Dukakis1,872 | 59.6%Bush2,797 | 0.5%Paul23 | 4,692 | ||
| R | 32.4%Mondale1,647 | 67.4%Reagan3,424 | 0.2%Bergland12 | 5,083 | ||
| R | 32.4%Carter1,586 | 65.5%Reagan3,201 | 2.1%Anderson101 | 4,888 | ||
| R | 47.1%Carter2,182 | 52.2%Ford2,417 | 0.6%McCarthy29 | 4,628 | ||
| R | 31.4%McGovern1,293 | 68.5%Nixon2,826 | 0.1%Schmitz4 | 4,123 | ||
| R | 28.8%Humphrey1,143 | 60.5%Nixon2,406 | 10.7%Wallace426 | 3,975 | ||
| R | 44.4%Johnson1,770 | 55.6%Goldwater2,217 | 0.0% | 3,987 | ||
| R | 33.7%Kennedy1,413 | 66.2%Nixon2,778 | 0.1%Byrd6 | 4,197 | ||
| R | 34.2%Stevenson1,549 | 65.7%Eisenhower2,973 | 0.0%Andrews2 | 4,524 | ||
| R | 32.6%Stevenson1,614 | 67.3%Eisenhower3,327 | 0.1%Hallinan6 | 4,947 | ||
| R | 35.0%Truman1,510 | 64.5%Dewey2,778 | 0.5%Thurmond21 | 4,309 | ||
| R | 31.5%Roosevelt1,522 | 68.2%Dewey3,298 | 0.3%Thomas13 | 4,833 | ||
| R | 37.0%Roosevelt2,254 | 62.8%Willkie3,827 | 0.2%Thomas13 | 6,094 | ||
| R | 41.3%Roosevelt2,497 | 58.5%Landon3,537 | 0.3%Lemke16 | 6,050 | ||
| R | 49.1%Roosevelt2,387 | 49.9%Hoover2,424 | 1.0%Thomas50 | 4,861 | ||
| R | 28.4%Smith1,163 | 70.7%Hoover2,892 | 0.9%Thomas36 | 4,091 | ||
| R | 34.6%Davis1,408 | 60.6%Coolidge2,468 | 4.8%La Follette197 | 4,073 | ||
| R | 27.1%Cox1,137 | 70.9%Harding2,972 | 2.0%Debs82 | 4,191 | ||
| R | 34.9%Wilson1,822 | 62.6%Hughes3,273 | 2.5%Benson133 | 5,228 | ||
| R | 32.6%Wilson952 | 35.1%Taft1,025 | 32.4%Roosevelt946 | 2,923 | ||
| R | 34.3%Bryan1,055 | 62.3%Taft1,913 | 3.4%Debs104 | 3,072 | ||
| R | 29.5%Parker980 | 65.2%Roosevelt2,164 | 5.3%Debs177 | 3,321 | ||
| R | 38.7%Bryan1,271 | 59.0%McKinley1,940 | 2.3%Woolley76 | 3,287 | ||
| R | 41.0%Bryan1,429 | 58.2%McKinley2,027 | 0.8%Palmer28 | 3,484 | ||
| R | 27.6%Cleveland854 | 55.4%Harrison1,716 | 17.0%Weaver527 | 3,097 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −27.8% |
| 1896 | −17.2% |
| 1900 | −20.4% |
| 1904 | −35.7% |
| 1908 | −27.9% |
| 1912 | −2.5% |
| 1916 | −27.8% |
| 1920 | −43.8% |
| 1924 | −26.0% |
| 1928 | −42.3% |
| 1932 | −0.8% |
| 1936 | −17.2% |
| 1940 | −25.8% |
| 1944 | −36.7% |
| 1948 | −29.4% |
| 1952 | −34.6% |
| 1956 | −31.5% |
| 1960 | −32.5% |
| 1964 | −11.2% |
| 1968 | −31.8% |
| 1972 | −37.2% |
| 1976 | −5.1% |
| 1980 | −33.0% |
| 1984 | −35.0% |
| 1988 | −19.7% |
| 1992 | +3.2% |
| 1996 | −4.7% |
| 2000 | −25.3% |
| 2004 | −37.2% |
| 2008 | −34.6% |
| 2012 | −42.0% |
| 2016 | −57.6% |
| 2020 | −58.6% |
| 2024 | −58.3% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 8,825 |
| 2018 | 9,129 |
| 2020 | 9,029 |
| 2022 | 8,118 |
| 2024 | 8,218 |
Source: U.S. Election Assistance Commission (EAVS)
Tucked into the Shawnee Hills at Illinois's southern tip, Johnson County delivered a 58-point Republican presidential margin in 2024, reflecting the deep rural conservatism that defines the state's southernmost counties.
Across the recorded series it reached a Democratic high of 3.2 points in 1992 and a Republican high of 58.6 points in 2020. The 2024 margin was 58.3 points.
A population of 13,376, a 80% non-Hispanic-white share, and a median household income of $62,528 describe the county. The county's voting pattern over the last decade is most similar to that of Todd County and Butler County.
Most similar counties
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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Johnson County, Illinois. Akashic. https://akashic.app/county/17087/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did Johnson County, Illinois vote in 2024?
In 2024, Johnson County, Illinois voted Republican by 58.3 points (R+58.3), carried by the Republican candidate. Out of 6,103 votes cast, 1,241 went Democratic and 4,798 went Republican.
When did Johnson County, Illinois last vote Democratic?
The most recent presidential election in which Johnson County, Illinois voted Democratic was 1992.
How many people live in Johnson County, Illinois?
Johnson County, Illinois has a population of 13,376 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Johnson County, Illinois?
Median household income in Johnson County, Illinois is $62,528 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Johnson County, Illinois?
Akashic tracks 38 presidential elections in Johnson County, Illinois from 1876 to 2024. Of those, 1 went Democratic and 33 went Republican.