DeKalb County, Illinois
AkashicDeKalb County, ILHarrisD+2.0
2024 precinct map of DeKalb CountyPrecinct-level 2024 presidential results for DeKalb 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 | 49.9% | 23,648 |
|---|---|---|
| Donald TrumpRepublican | 47.9% | 22,716 |
| Robert F Kennedy Jr.Independent | 1.7% | 822 |
Harris +50Trump +50
69 precincts · 47,401 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 | 49.9%Harris23,648 | 47.9%Trump22,716 | 1.7%Kennedy822 | 47,401 | ||
| D | 51.4%Biden24,643 | 45.6%Trump21,905 | 1.6%Jorgensen783 | 47,989 | ||
| D | 46.9%Clinton20,466 | 43.8%Trump19,091 | 5.7%Johnson2,482 | 43,600 | ||
| D | 51.4%Obama21,207 | 45.9%Romney18,934 | 1.5%JOHNSON636 | 41,241 | ||
| D | 57.5%Obama25,784 | 40.8%McCain18,266 | 1.7%Nader768 | 44,818 | ||
| R | 47.3%Kerry19,263 | 51.7%Bush21,095 | 1.0%Badnarik410 | 40,768 | ||
| R | 44.5%Gore14,798 | 51.6%Bush17,139 | 3.1%Nader1,032 | 33,233 | ||
| D | 44.6%Clinton12,715 | 43.4%Dole12,380 | 10.5%Perot3,009 | 28,527 | ||
| D | 40.1%Clinton13,744 | 37.0%Bush12,655 | 22.4%Perot7,680 | 34,232 | ||
| R | 40.5%Dukakis11,811 | 58.9%Bush17,182 | 0.7%Paul197 | 29,190 | ||
| R | 34.8%Mondale10,942 | 64.5%Reagan20,294 | 0.7%Bergland229 | 31,465 | ||
| R | 29.4%Carter8,913 | 53.9%Reagan16,370 | 16.7%Anderson5,082 | 30,365 | ||
| R | 37.5%Carter11,535 | 59.2%Ford18,193 | 3.3%McCarthy1,000 | 30,728 | ||
| R | 39.4%McGovern12,375 | 60.3%Nixon18,910 | 0.3%Schmitz99 | 31,384 | ||
| R | 30.3%Humphrey6,974 | 63.2%Nixon14,535 | 6.5%Wallace1,490 | 22,999 | ||
| R | 46.5%Johnson10,257 | 53.5%Goldwater11,791 | 0.0%Hass1 | 22,049 | ||
| R | 30.3%Kennedy6,783 | 69.6%Nixon15,586 | 0.1%Byrd19 | 22,388 | ||
| R | 24.2%Stevenson4,826 | 75.7%Eisenhower15,078 | 0.1%Andrews25 | 19,929 | ||
| R | 25.6%Stevenson5,110 | 74.2%Eisenhower14,807 | 0.2%Hallinan30 | 19,947 | ||
| R | 30.7%Truman5,082 | 68.7%Dewey11,380 | 0.6%Thurmond105 | 16,567 | ||
| R | 33.0%Roosevelt6,004 | 66.8%Dewey12,157 | 0.3%Thomas49 | 18,210 | ||
| R | 35.5%Roosevelt6,989 | 63.9%Willkie12,577 | 0.5%Thomas102 | 19,668 | ||
| R | 43.2%Roosevelt7,899 | 53.8%Landon9,826 | 3.0%Lemke550 | 18,275 | ||
| R | 41.7%Roosevelt6,923 | 56.4%Hoover9,356 | 1.9%Thomas315 | 16,594 | ||
| R | 25.4%Smith3,940 | 74.2%Hoover11,501 | 0.4%Thomas62 | 15,503 | ||
| R | 11.2%Davis1,540 | 76.4%Coolidge10,500 | 12.4%La Follette1,704 | 13,744 | ||
| R | 13.8%Cox1,700 | 83.9%Harding10,374 | 2.3%Debs287 | 12,361 | ||
| R | 24.7%Wilson3,386 | 71.3%Hughes9,764 | 4.0%Benson547 | 13,697 | ||
| O | 21.4%Wilson1,568 | 24.3%Taft1,776 | 54.3%Roosevelt3,970 | 7,314 | ||
| R | 21.4%Bryan1,732 | 72.5%Taft5,866 | 6.1%Debs493 | 8,091 | ||
| R | 14.8%Parker1,137 | 77.4%Roosevelt5,957 | 7.8%Debs599 | 7,693 | ||
| R | 23.2%Bryan1,881 | 73.0%McKinley5,923 | 3.8%Woolley306 | 8,110 | ||
| R | 24.3%Bryan1,881 | 72.4%McKinley5,598 | 3.3%Palmer255 | 7,734 | ||
| R | 30.9%Cleveland1,926 | 60.7%Harrison3,789 | 8.4%Weaver525 | 6,240 | ||
| — | — | — | — | — | ||
| — | — | — | — | — | ||
| — | — | — | — | — | ||
| — | — | — | — | — |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −29.9% |
| 1896 | −48.1% |
| 1900 | −49.8% |
| 1904 | −62.7% |
| 1908 | −51.1% |
| 1912 | −2.8% |
| 1916 | −46.6% |
| 1920 | −70.2% |
| 1924 | −65.2% |
| 1928 | −48.8% |
| 1932 | −14.7% |
| 1936 | −10.5% |
| 1940 | −28.4% |
| 1944 | −33.8% |
| 1948 | −38.0% |
| 1952 | −48.6% |
| 1956 | −51.4% |
| 1960 | −39.3% |
| 1964 | −7.0% |
| 1968 | −32.9% |
| 1972 | −20.8% |
| 1976 | −21.7% |
| 1980 | −24.6% |
| 1984 | −29.7% |
| 1988 | −18.4% |
| 1992 | +3.2% |
| 1996 | +1.2% |
| 2000 | −7.0% |
| 2004 | −4.5% |
| 2008 | +16.8% |
| 2012 | +5.5% |
| 2016 | +3.2% |
| 2020 | +5.7% |
| 2024 | +2.0% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 102,160 |
| 2018 | 67,251 |
| 2020 | 69,340 |
| 2022 | 61,517 |
| 2024 | 72,601 |
Source: U.S. Election Assistance Commission (EAVS)
Home to Northern Illinois University, DeKalb County shifted from reliably Republican to a near-even split over the past two decades, with the 2024 presidential race decided by roughly 2 points — a margin driven largely by turnout patterns around Dekalb's student and exurban populations.
Across the recorded series it reached a Democratic high of 16.8 points in 2008 and a Republican high of 70.2 points in 1920. Between 2020 and 2024 the county moved 3.7 points toward the Republican candidate; the 2024 margin was 2.0 points.
A population of 100,703, a 71% non-Hispanic-white share, and a median household income of $70,724 describe the county. The county's voting pattern over the last decade is most similar to that of Centre County and Will 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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
DeKalb County, Illinois. Akashic. https://akashic.app/county/17037/. 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 →
Illinois at the ballot boxAll elections →
Frequently asked questions
How did DeKalb County, Illinois vote in 2024?
In 2024, DeKalb County, Illinois voted Democratic by 2.0 points (D+2.0), carried by the Democratic candidate. Out of 47,401 votes cast, 23,648 went Democratic and 22,716 went Republican.
When did DeKalb County, Illinois last vote Republican?
The most recent presidential election in which DeKalb County, Illinois voted Republican was 2004.
How many people live in DeKalb County, Illinois?
DeKalb County, Illinois has a population of 100,703 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in DeKalb County, Illinois?
Median household income in DeKalb County, Illinois is $70,724 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of DeKalb County, Illinois?
Akashic tracks 38 presidential elections in DeKalb County, Illinois from 1876 to 2024. Of those, 7 went Democratic and 26 went Republican.