2024 results by precinct
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,865 | 19,710 | 23,826 | |
| 2020 | R | 4,030 | 19,452 | 23,761 | |
| 2016 | R | 3,384 | 17,506 | 22,053 | |
| 2012 | R | 4,745 | 16,561 | 21,818 | |
| 2008 | R | 5,853 | 15,100 | 21,299 | |
| 2004 | R | 5,118 | 15,650 | 20,890 | |
| 2000 | R | 5,212 | 12,485 | 18,294 | |
| 1996 | R | 6,300 | 8,832 | 17,653 | |
| 1992 | R | 4,883 | 8,683 | 18,545 | |
| 1988 | R | 4,978 | 11,162 | 16,286 | |
| 1984 | R | 4,422 | 11,542 | 16,144 | |
| 1980 | R | 5,506 | 8,673 | 15,339 | |
| 1976 | R | 6,724 | 7,678 | 14,849 | |
| 1972 | R | 5,798 | 8,587 | 14,907 | |
| 1968 | D | 6,801 | 6,313 | 14,209 | |
| 1964 | D | 10,081 | 4,373 | 14,454 | |
| 1960 | R | 7,730 | 7,735 | 15,465 | |
| 1956 | R | 4,272 | 9,456 | 13,728 | |
| 1952 | R | 4,725 | 9,058 | 13,783 | |
| 1948 | D | 5,928 | 5,266 | 11,202 | |
| 1944 | R | 4,522 | 7,712 | 12,234 | |
| 1940 | R | 5,114 | 7,905 | 13,019 | |
| 1936 | D | 7,217 | 3,602 | 13,204 | |
| 1932 | D | 8,462 | 3,314 | 11,929 | |
| 1928 | D | 6,155 | 5,129 | 11,326 | |
| 1924 | D | 5,135 | 4,215 | 10,434 | |
| 1920 | R | 4,404 | 5,692 | 10,140 | |
| 1916 | D | 3,803 | 2,065 | 6,107 | |
| 1912 | D | 3,591 | 1,324 | 5,683 | |
| 1908 | D | 4,456 | 2,148 | 6,729 | |
| 1904 | D | 3,286 | 2,173 | 5,615 | |
| 1900 | D | 4,460 | 2,015 | 6,566 | |
| 1896 | D | 4,790 | 1,991 | 6,827 | |
| 1892 | D | 3,688 | 1,526 | 5,900 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
100.0%
African American
1.0%
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 39.4 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$76,782
Mercer County ranks in the top 25% of US counties.
Mercer County$76,782
Ohio$71,389
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
7.3%
Children face moderate poverty.
Children under 1818.0%
Working age (18–64)100.0%
Seniors (65+)18.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
0.0%
speak English only
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 22.5% of residents not counted as adherents by any reporting body.
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.
The Republican margin in Mercer County reached its widest at sixty-seven points in 2024. The margin in 2024 was sixty-seven points, in line with the county's deep historical pattern.
Mercer County's loyalty is rooted in its place. Median household income of $76,782, a 95% non-Hispanic-white share, and a population of 42,484 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Fulton County and Appomattox County.
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