Cook County, Illinois
AkashicCook County, ILHarrisD+41.6
2024 precinct map of Cook CountyPrecinct-level 2024 presidential results for Cook 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
| Kamala Harris ✓Democratic | 69.6% | 1,447,821 |
|---|---|---|
| Donald TrumpRepublican | 28.1% | 583,852 |
| Robert F Kennedy Jr.Independent | 1.2% | 25,127 |
Harris +50Trump +50
2,721 precincts · 2,079,239 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 |
|---|---|---|---|---|---|---|
| D | 69.6%Harris1,447,821 | 28.1%Trump583,852 | 1.2%Kennedy25,127 | 2,079,239 | ||
| D | 74.2%Biden1,725,973 | 24.0%Trump558,269 | 0.8%Jorgensen17,657 | 2,325,405 | ||
| D | 73.9%Clinton1,611,946 | 20.8%Trump453,287 | 2.7%Johnson58,678 | 2,180,344 | ||
| D | 73.9%Obama1,488,537 | 24.6%Romney495,542 | 0.8%JOHNSON15,845 | 2,014,819 | ||
| D | 76.2%Obama1,629,024 | 22.8%McCain487,736 | 1.0%Nader20,706 | 2,137,466 | ||
| D | 70.2%Kerry1,439,724 | 29.1%Bush597,405 | 0.6%Badnarik12,305 | 2,049,434 | ||
| D | 68.6%Gore1,280,547 | 28.6%Bush534,542 | 2.3%Nader42,068 | 1,865,907 | ||
| D | 66.8%Clinton1,153,289 | 26.7%Dole461,557 | 5.6%Perot96,633 | 1,726,666 | ||
| D | 58.2%Clinton1,249,533 | 28.2%Bush605,300 | 13.1%Perot281,999 | 2,146,655 | ||
| D | 55.8%Dukakis1,129,973 | 43.4%Bush878,582 | 0.9%Paul17,589 | 2,026,144 | ||
| D | 51.0%Mondale1,112,641 | 48.4%Reagan1,055,558 | 0.6%Bergland12,536 | 2,180,735 | ||
| D | 52.0%Carter1,124,584 | 39.6%Reagan856,574 | 8.4%Anderson181,939 | 2,163,097 | ||
| D | 53.4%Carter1,180,814 | 44.7%Ford987,498 | 1.9%McCarthy41,436 | 2,209,748 | ||
| R | 46.0%McGovern1,063,268 | 53.4%Nixon1,234,307 | 0.6%Schmitz13,462 | 2,311,037 | ||
| D | 50.6%Humphrey1,181,316 | 41.1%Nixon960,493 | 8.3%Wallace194,729 | 2,336,538 | ||
| D | 63.2%Johnson1,537,181 | 36.8%Goldwater895,718 | 0.0% | 2,432,899 | ||
| D | 56.4%Kennedy1,378,343 | 43.3%Nixon1,059,607 | 0.3%Byrd7,319 | 2,445,269 | ||
| R | 42.9%Stevenson977,821 | 56.8%Eisenhower1,293,223 | 0.3%Andrews5,800 | 2,276,844 | ||
| R | 49.5%Stevenson1,172,454 | 50.2%Eisenhower1,188,973 | 0.3%Hallinan6,512 | 2,367,939 | ||
| D | 54.2%Truman1,216,636 | 45.2%Dewey1,015,800 | 0.6%Thurmond13,463 | 2,245,899 | ||
| D | 57.8%Roosevelt1,275,367 | 41.9%Dewey924,659 | 0.3%Thomas6,165 | 2,206,191 | ||
| D | 55.2%Roosevelt1,168,141 | 44.4%Willkie938,454 | 0.4%Thomas8,212 | 2,114,807 | ||
| D | 62.4%Roosevelt1,253,164 | 34.9%Landon701,206 | 2.7%Lemke55,087 | 2,009,457 | ||
| D | 55.2%Roosevelt919,231 | 41.5%Hoover690,146 | 3.3%Thomas54,855 | 1,664,232 | ||
| R | 46.5%Smith716,283 | 52.7%Hoover812,063 | 0.8%Thomas11,825 | 1,540,171 | ||
| R | 20.3%Davis226,141 | 61.9%Coolidge688,973 | 17.8%La Follette198,538 | 1,113,652 | ||
| R | 22.1%Cox197,499 | 71.1%Harding635,197 | 6.8%Debs60,441 | 893,137 | ||
| R | 44.6%Wilson379,438 | 51.3%Hughes435,695 | 4.1%Benson34,780 | 849,913 | ||
| O | 30.4%Wilson130,702 | 17.4%Taft74,851 | 52.1%Roosevelt223,759 | 429,312 | ||
| R | 36.9%Bryan152,990 | 55.5%Taft230,400 | 7.6%Debs31,701 | 415,091 | ||
| R | 26.4%Parker103,762 | 58.5%Roosevelt229,848 | 15.1%Debs59,335 | 392,945 | ||
| R | 46.4%Bryan186,193 | 50.8%McKinley203,760 | 2.8%Woolley11,181 | 401,134 | ||
| R | 40.1%Bryan152,146 | 58.4%McKinley221,823 | 1.5%Palmer5,639 | 379,608 | ||
| D | 55.3%Cleveland144,604 | 42.6%Harrison111,254 | 2.1%Weaver5,472 | 261,330 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +12.8% |
| 1896 | −18.4% |
| 1900 | −4.4% |
| 1904 | −32.1% |
| 1908 | −18.6% |
| 1912 | +13.0% |
| 1916 | −6.6% |
| 1920 | −49.0% |
| 1924 | −41.6% |
| 1928 | −6.2% |
| 1932 | +13.8% |
| 1936 | +27.5% |
| 1940 | +10.9% |
| 1944 | +15.9% |
| 1948 | +8.9% |
| 1952 | −0.7% |
| 1956 | −13.9% |
| 1960 | +13.0% |
| 1964 | +26.4% |
| 1968 | +9.5% |
| 1972 | −7.4% |
| 1976 | +8.7% |
| 1980 | +12.4% |
| 1984 | +2.6% |
| 1988 | +12.4% |
| 1992 | +30.0% |
| 1996 | +40.1% |
| 2000 | +40.0% |
| 2004 | +41.1% |
| 2008 | +53.4% |
| 2012 | +49.3% |
| 2016 | +53.1% |
| 2020 | +50.2% |
| 2024 | +41.6% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 1,643,096 |
| 2018 | 1,705,745 |
| 2020 | 1,732,605 |
| 2022 | 1,910,000 |
| 2024 | 1,800,799 |
Source: U.S. Election Assistance Commission (EAVS)
Cook County's presidential margins have exceeded D+40 in recent cycles, driven by Chicago's dense, majority-minority electorate. Its 5.3 million residents make it the second-most populous county in the United States.
Across the recorded series it reached a Democratic high of 53.4 points in 2008 and a Republican high of 49.0 points in 1920. Between 2020 and 2024 the county moved 8.7 points toward the Republican candidate; the 2024 margin was 41.6 points.
A population of 5,182,090, a 40% non-Hispanic-white share, and a median household income of $83,498 describe the county. The county's voting pattern over the last decade is most similar to that of Allendale County and Essex County.
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Cook County, Illinois. Akashic. https://akashic.app/county/17031/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Cook County
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Frequently asked questions
How did Cook County, Illinois vote in 2024?
In 2024, Cook County, Illinois voted Democratic by 41.6 points (D+41.6), carried by the Democratic candidate. Out of 2,079,239 votes cast, 1,447,821 went Democratic and 583,852 went Republican.
When did Cook County, Illinois last vote Republican?
The most recent presidential election in which Cook County, Illinois voted Republican was 1972.
How many people live in Cook County, Illinois?
Cook County, Illinois has a population of 5,182,090 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Cook County, Illinois?
Median household income in Cook County, Illinois is $83,498 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Cook County, Illinois?
Akashic tracks 38 presidential elections in Cook County, Illinois from 1876 to 2024. Of those, 22 went Democratic and 11 went Republican.