Williamson County, Illinois
AkashicWilliamson County, ILTrumpR+38.7
2024 precinct map of Williamson CountyPrecinct-level 2024 presidential results for Williamson 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 | 68.6% | 22,686 |
|---|---|---|
| Kamala HarrisDemocratic | 29.9% | 9,890 |
| Robert F Kennedy Jr.Independent | 1.3% | 422 |
Harris +50Trump +50
56 precincts · 33,068 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 | 29.9%Harris9,890 | 68.6%Trump22,686 | 1.3%Kennedy422 | 33,068 | ||
| R | 30.3%Biden10,206 | 67.6%Trump22,801 | 1.2%Jorgensen420 | 33,730 | ||
| R | 26.9%Clinton8,581 | 67.7%Trump21,570 | 3.1%Johnson997 | 31,852 | ||
| R | 36.4%Obama10,647 | 61.2%Romney17,909 | 1.1%JOHNSON331 | 29,254 | ||
| R | 41.8%Obama12,589 | 56.5%McCain17,039 | 1.7%Nader513 | 30,141 | ||
| R | 39.0%Kerry11,685 | 60.4%Bush18,086 | 0.6%Badnarik189 | 29,960 | ||
| R | 45.3%Gore12,192 | 52.0%Bush14,012 | 1.8%Nader476 | 26,939 | ||
| D | 49.5%Clinton12,510 | 38.5%Dole9,734 | 11.4%Perot2,877 | 25,272 | ||
| D | 49.9%Clinton14,361 | 32.9%Bush9,462 | 16.6%Perot4,779 | 28,760 | ||
| D | 50.6%Dukakis12,712 | 48.8%Bush12,274 | 0.6%Paul144 | 25,130 | ||
| R | 43.6%Mondale11,614 | 56.1%Reagan14,930 | 0.3%Bergland86 | 26,630 | ||
| R | 41.1%Carter10,779 | 55.1%Reagan14,451 | 3.8%Anderson998 | 26,228 | ||
| D | 55.4%Carter13,600 | 43.6%Ford10,703 | 1.0%McCarthy250 | 24,553 | ||
| R | 39.2%McGovern9,202 | 60.0%Nixon14,101 | 0.8%Schmitz189 | 23,492 | ||
| R | 41.0%Humphrey9,660 | 50.4%Nixon11,886 | 8.7%Wallace2,042 | 23,588 | ||
| D | 61.5%Johnson14,613 | 38.5%Goldwater9,130 | 0.0% | 23,743 | ||
| R | 45.2%Kennedy11,335 | 54.7%Nixon13,732 | 0.1%Byrd29 | 25,096 | ||
| R | 43.4%Stevenson10,345 | 56.4%Eisenhower13,438 | 0.1%Andrews27 | 23,810 | ||
| R | 44.7%Stevenson10,838 | 55.1%Eisenhower13,348 | 0.2%Hallinan37 | 24,223 | ||
| R | 48.3%Truman9,841 | 51.0%Dewey10,386 | 0.6%Thurmond130 | 20,357 | ||
| R | 44.0%Roosevelt9,974 | 55.6%Dewey12,594 | 0.5%Thomas103 | 22,671 | ||
| D | 50.1%Roosevelt14,645 | 49.4%Willkie14,433 | 0.5%Thomas139 | 29,217 | ||
| D | 53.6%Roosevelt14,663 | 45.1%Landon12,319 | 1.3%Lemke352 | 27,334 | ||
| D | 58.2%Roosevelt12,961 | 39.1%Hoover8,714 | 2.6%Thomas590 | 22,265 | ||
| R | 47.6%Smith10,139 | 51.2%Hoover10,913 | 1.2%Thomas257 | 21,309 | ||
| R | 29.6%Davis6,117 | 45.3%Coolidge9,366 | 25.2%La Follette5,206 | 20,689 | ||
| R | 26.5%Cox4,728 | 56.7%Harding10,118 | 16.8%Debs2,988 | 17,834 | ||
| R | 42.7%Wilson8,172 | 53.6%Hughes10,262 | 3.7%Benson704 | 19,138 | ||
| D | 35.2%Wilson3,258 | 34.6%Taft3,209 | 30.2%Roosevelt2,800 | 9,267 | ||
| R | 38.6%Bryan3,513 | 52.6%Taft4,786 | 8.7%Debs794 | 9,093 | ||
| R | 29.1%Parker1,996 | 59.0%Roosevelt4,044 | 11.9%Debs819 | 6,859 | ||
| R | 42.2%Bryan2,760 | 56.9%McKinley3,723 | 0.9%Woolley57 | 6,540 | ||
| R | 45.8%Bryan2,582 | 53.7%McKinley3,027 | 0.5%Palmer28 | 5,637 | ||
| R | 43.4%Cleveland2,118 | 51.3%Harrison2,504 | 5.2%Weaver256 | 4,878 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −7.9% |
| 1896 | −7.9% |
| 1900 | −14.7% |
| 1904 | −29.9% |
| 1908 | −14.0% |
| 1912 | +0.5% |
| 1916 | −10.9% |
| 1920 | −30.2% |
| 1924 | −15.7% |
| 1928 | −3.6% |
| 1932 | +19.1% |
| 1936 | +8.6% |
| 1940 | +0.7% |
| 1944 | −11.6% |
| 1948 | −2.7% |
| 1952 | −10.4% |
| 1956 | −13.0% |
| 1960 | −9.6% |
| 1964 | +23.1% |
| 1968 | −9.4% |
| 1972 | −20.9% |
| 1976 | +11.8% |
| 1980 | −14.0% |
| 1984 | −12.5% |
| 1988 | +1.7% |
| 1992 | +17.0% |
| 1996 | +11.0% |
| 2000 | −6.8% |
| 2004 | −21.4% |
| 2008 | −14.8% |
| 2012 | −24.8% |
| 2016 | −40.8% |
| 2020 | −37.3% |
| 2024 | −38.7% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 49,961 |
| 2018 | 49,569 |
| 2020 | 49,383 |
| 2022 | 50,213 |
| 2024 | 53,816 |
Source: U.S. Election Assistance Commission (EAVS)
Williamson County's coalfield heritage once made it a Democratic bedrock, but the region's political realignment over recent decades has produced presidential margins exceeding R+38, among the sharpest swings in downstate Illinois.
Across the recorded series it reached a Democratic high of 23.1 points in 1964 and a Republican high of 40.8 points in 2016. Between 2020 and 2024 the county moved 1.4 points toward the Republican candidate; the 2024 margin was 38.7 points.
A population of 66,876, a 88% non-Hispanic-white share, and a median household income of $65,604 describe the county. The county's voting pattern over the last decade is most similar to that of Randolph County and Union County.
Most similar counties
Compare two places, side by side
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Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Williamson County, Illinois. Akashic. https://akashic.app/county/17199/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Williamson County
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Frequently asked questions
How did Williamson County, Illinois vote in 2024?
In 2024, Williamson County, Illinois voted Republican by 38.7 points (R+38.7), carried by the Republican candidate. Out of 33,068 votes cast, 9,890 went Democratic and 22,686 went Republican.
When did Williamson County, Illinois last vote Democratic?
The most recent presidential election in which Williamson County, Illinois voted Democratic was 1996.
How many people live in Williamson County, Illinois?
Williamson County, Illinois has a population of 66,876 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Williamson County, Illinois?
Median household income in Williamson County, Illinois is $65,604 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Williamson County, Illinois?
Akashic tracks 38 presidential elections in Williamson County, Illinois from 1876 to 2024. Of those, 9 went Democratic and 25 went Republican.