akashic
1876–2024
Warren County, Ohio
Warren County·Ohio

Warren County has voted Republican for as long as anyone can remember.

One of Ohio's most reliably Republican suburban counties

18762024·38 elections
Warren County, Ohio · Nyttend · Wikimedia Commons
Latest
R+31
in 2024
Archetype
Republican loyalist
since the recent cycles
Population
250,008
2024 ACS
Most similar
Okaloosa County
FL · similarity 1.00
175 precincts · 140,759 votes cast
Trump · R+31
Margin
Turnout
Harris +50
Trump +50
Real precinct boundaries. Hover for vote totals.
YearWonMarginDemocraticRepublicanTotal
2024R
−31.3%
47,12891,132140,759
2020R
−30.8%
46,06987,988136,100
2016R
−36.8%
33,73077,643119,450
2012R
−39.1%
32,90976,564111,760
2008R
−36.0%
33,39871,691106,426
2004R
−44.5%
26,04468,03794,422
2000R
−42.2%
19,14248,31869,078
1996R
−29.1%
17,08933,21055,409
1992R
−27.4%
13,54227,99852,802
1988R
−47.3%
11,14531,41942,818
1984R
−53.3%
9,03129,84839,070
1980R
−31.3%
11,30622,43035,522
1976R
−9.2%
13,34916,11529,935
1972R
−47.6%
6,94120,21027,897
1968R
−22.7%
6,75612,66326,014
1964D
+6.1%
12,40610,98223,388
1960R
−29.2%
7,94514,50522,450
1956R
−31.1%
7,19313,67320,866
1952R
−24.1%
7,05411,52918,583
1948R
−13.4%
5,7937,58413,409
1944R
−19.7%
5,7658,59814,363
1940R
−11.7%
6,8958,72215,617
1936R
−1.0%
7,2097,35914,707
1932R
−14.2%
5,5477,42113,165
1928R
−55.7%
2,4558,70811,219
1924R
−44.3%
2,4066,7299,749
1920R
−30.5%
3,9567,46411,491
1916R
−10.1%
2,9373,6106,642
1912R
−11.0%
2,1012,7886,267
1908R
−22.5%
2,6564,2336,996
1904R
−36.3%
2,0124,3816,528
1900R
−23.0%
2,6754,3117,115
1896R
−21.9%
2,7944,3797,234
1892R
−21.8%
2,4003,8076,453
1888
No data
1884
No data
1880
No data
1876
No data
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
100.0%
African American
2.6%
Multiple ancestry combinations reported; no single grouping above 1%.
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.
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
Other Christian
24.0%
Catholic & Orthodox
19.5%
Baptist
3.9%
Pentecostal & Holiness
3.0%
Methodist
1.4%
Mainline Protestant
1.3%
Non-Christian
0.8%
Source · 2020 US Religion Census. Remaining 46.1% of residents not counted as adherents by any reporting body.

Anchored by fast-growing communities like Mason and Lebanon, Warren County has delivered double-digit Republican presidential margins for decades, making it a benchmark for measuring GOP strength in southwest Ohio's outer-ring suburbs.

The Republican margin in Warren County reached its widest at fifty-six points in 1928. The margin in 2024 was thirty-one points, in line with the county's deep historical pattern.

Warren County's loyalty is rooted in its place. Median household income of $110,132, a 83% non-Hispanic-white share, and a population of 250,008 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 Okaloosa County and Clay County.