Mercer County, Ohio
AkashicMercer County, OHTrumpR+66.7
2024 precinct map of Mercer CountyPrecinct-level 2024 presidential results for Mercer 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 | 83.0% | 19,710 |
|---|---|---|
| Kamala HarrisDemocratic | 16.3% | 3,865 |
| Chase OliverIndependent | 0.3% | 72 |
Harris +50Trump +50
36 precincts · 23,753 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 | 16.3%Harris3,865 | 83.0%Trump19,710 | 0.3%Oliver72 | 23,753 | ||
| R | 17.0%Biden4,030 | 81.9%Trump19,452 | 0.9%Jorgensen204 | 23,761 | ||
| R | 15.3%Clinton3,384 | 79.4%Trump17,506 | 2.5%Johnson562 | 22,053 | ||
| R | 21.7%Obama4,745 | 75.9%Romney16,561 | 0.7%Johnson142 | 21,818 | ||
| R | 27.5%Obama5,853 | 70.9%McCain15,100 | 1.6%Nader346 | 21,299 | ||
| R | 24.5%Kerry5,118 | 74.9%Bush15,650 | 0.6%Other122 | 20,890 | ||
| R | 28.5%Gore5,212 | 68.2%Bush12,485 | 2.1%Nader392 | 18,294 | ||
| R | 35.7%Clinton6,300 | 50.0%Dole8,832 | 13.4%Perot2,361 | 17,653 | ||
| R | 26.3%Clinton4,883 | 46.8%Bush8,683 | 26.5%Perot4,913 | 18,545 | ||
| R | 30.6%Dukakis4,978 | 68.5%Bush11,162 | 0.9%Fulani146 | 16,286 | ||
| R | 27.4%Mondale4,422 | 71.5%Reagan11,542 | 1.1%Serrette180 | 16,144 | ||
| R | 35.9%Carter5,506 | 56.5%Reagan8,673 | 7.6%Anderson1,160 | 15,339 | ||
| R | 45.3%Carter6,724 | 51.7%Ford7,678 | 3.0%McCarthy447 | 14,849 | ||
| R | 38.9%McGovern5,798 | 57.6%Nixon8,587 | 3.5%Schmitz522 | 14,907 | ||
| D | 47.9%Humphrey6,801 | 44.4%Nixon6,313 | 7.7%Wallace1,095 | 14,209 | ||
| D | 69.7%Johnson10,081 | 30.3%Goldwater4,373 | 0.0% | 14,454 | ||
| R | 50.0%Kennedy7,730 | 50.0%Nixon7,735 | 0.0% | 15,465 | ||
| R | 31.1%Stevenson4,272 | 68.9%Eisenhower9,456 | 0.0% | 13,728 | ||
| R | 34.3%Stevenson4,725 | 65.7%Eisenhower9,058 | 0.0% | 13,783 | ||
| D | 52.9%Truman5,928 | 47.0%Dewey5,266 | 0.1%Thurmond8 | 11,202 | ||
| R | 37.0%Roosevelt4,522 | 63.0%Dewey7,712 | 0.0% | 12,234 | ||
| R | 39.3%Roosevelt5,114 | 60.7%Willkie7,905 | 0.0% | 13,019 | ||
| D | 54.7%Roosevelt7,217 | 27.3%Landon3,602 | 18.1%Lemke2,385 | 13,204 | ||
| D | 70.9%Roosevelt8,462 | 27.8%Hoover3,314 | 1.3%Thomas153 | 11,929 | ||
| D | 54.3%Smith6,155 | 45.3%Hoover5,129 | 0.4%Thomas42 | 11,326 | ||
| D | 49.2%Davis5,135 | 40.4%Coolidge4,215 | 10.4%La Follette1,084 | 10,434 | ||
| R | 43.4%Cox4,404 | 56.1%Harding5,692 | 0.4%Debs44 | 10,140 | ||
| D | 62.3%Wilson3,803 | 33.8%Hughes2,065 | 3.9%Benson239 | 6,107 | ||
| D | 63.2%Wilson3,591 | 23.3%Taft1,324 | 13.5%Roosevelt768 | 5,683 | ||
| D | 66.2%Bryan4,456 | 31.9%Taft2,148 | 1.9%Debs125 | 6,729 | ||
| D | 58.5%Parker3,286 | 38.7%Roosevelt2,173 | 2.8%Debs156 | 5,615 | ||
| D | 67.9%Bryan4,460 | 30.7%McKinley2,015 | 1.4%Woolley91 | 6,566 | ||
| D | 70.2%Bryan4,790 | 29.2%McKinley1,991 | 0.7%Palmer46 | 6,827 | ||
| D | 62.5%Cleveland3,688 | 25.9%Harrison1,526 | 11.6%Weaver686 | 5,900 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +36.6% |
| 1896 | +41.0% |
| 1900 | +37.2% |
| 1904 | +19.8% |
| 1908 | +34.3% |
| 1912 | +39.9% |
| 1916 | +28.5% |
| 1920 | −12.7% |
| 1924 | +8.8% |
| 1928 | +9.1% |
| 1932 | +43.2% |
| 1936 | +27.4% |
| 1940 | −21.4% |
| 1944 | −26.1% |
| 1948 | +5.9% |
| 1952 | −31.4% |
| 1956 | −37.8% |
| 1960 | −0.0% |
| 1964 | +39.5% |
| 1968 | +3.4% |
| 1972 | −18.7% |
| 1976 | −6.4% |
| 1980 | −20.6% |
| 1984 | −44.1% |
| 1988 | −38.0% |
| 1992 | −20.5% |
| 1996 | −14.3% |
| 2000 | −39.8% |
| 2004 | −50.4% |
| 2008 | −43.4% |
| 2012 | −54.2% |
| 2016 | −64.0% |
| 2020 | −64.9% |
| 2024 | −66.7% |
DemocraticRepublican
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 28,731 |
| 2018 | 29,411 |
| 2020 | 29,398 |
| 2022 | 29,555 |
| 2024 | 29,691 |
Source: U.S. Election Assistance Commission (EAVS)
Mercer County's R+66.7 margin in 2024 placed it among the most one-sided presidential results in the state, reflecting a heavily rural, agricultural population concentrated around Celina with deep roots in German Catholic heritage.
Across the recorded series it reached a Democratic high of 43.2 points in 1932 and a Republican high of 66.7 points in 2024. Between 2020 and 2024 the county moved 1.8 points toward the Republican candidate; the 2024 margin was 66.7 points.
A population of 42,484, a 94% non-Hispanic-white share, and a median household income of $76,782 describe the county. The county's voting pattern over the last decade is most similar to that of Fulton County and Appomattox 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.
Mercer County, Ohio. Akashic. https://akashic.app/county/39107/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Cities & towns in Mercer County
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Frequently asked questions
How did Mercer County, Ohio vote in 2024?
In 2024, Mercer County, Ohio voted Republican by 66.7 points (R+66.7), carried by the Republican candidate. Out of 23,753 votes cast, 3,865 went Democratic and 19,710 went Republican.
When did Mercer County, Ohio last vote Democratic?
The most recent presidential election in which Mercer County, Ohio voted Democratic was 1968.
How many people live in Mercer County, Ohio?
Mercer County, Ohio has a population of 42,484 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mercer County, Ohio?
Median household income in Mercer County, Ohio is $76,782 — below the national median of $80,734. The Ohio state median is $71,389.
What is the political history of Mercer County, Ohio?
Akashic tracks 38 presidential elections in Mercer County, Ohio from 1876 to 2024. Of those, 14 went Democratic and 20 went Republican.