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

Hamilton County changed direction in the last decade.

Cincinnati's home county has shifted steadily toward Democrats over two decades

18762024·38 elections
Hamilton County, Ohio · Warren LeMay from Chicago, IL, United States · Wikimedia Commons
Latest
D+15
in 2024
Archetype
Recent convert
since the recent cycles
Population
830,774
2024 ACS
Most similar
Henrico County
VA · similarity 0.99
562 precincts · 413,213 votes cast
Harris · D+15
Margin
Turnout
Harris +50
Trump +50
Real precinct boundaries. Hover for vote totals.
YearWonMarginDemocraticRepublicanTotal
2024D
+14.8%
233,360172,365413,213
2020D
+15.9%
246,266177,886430,929
2016D
+10.1%
215,719173,665417,456
2012D
+6.3%
219,927193,326421,997
2008D
+7.0%
225,213195,530425,086
2004R
−5.4%
199,679222,616424,025
2000R
−11.3%
161,578204,175377,899
1996R
−7.0%
160,458186,493372,068
1992R
−10.9%
148,409192,447403,420
1988R
−23.4%
140,354227,004370,384
1984R
−27.2%
140,350246,288388,815
1980R
−21.7%
129,114206,979358,541
1976R
−21.4%
135,605211,267353,079
1972R
−33.0%
119,054239,212364,385
1968R
−13.3%
135,057183,611365,483
1964D
+10.5%
199,127161,179360,306
1960R
−9.0%
176,215211,068387,283
1956R
−32.2%
113,797222,009335,806
1952R
−19.2%
140,785207,690348,475
1948R
−5.5%
135,290151,055288,413
1944R
−3.5%
144,470154,960299,430
1940R
−1.9%
148,907154,733303,640
1936D
+15.9%
153,117108,506280,436
1932D
+1.7%
123,109118,804249,076
1928R
−14.5%
110,151147,534258,692
1924R
−42.4%
34,916115,950191,029
1920R
−17.8%
77,598112,590196,966
1916R
−10.0%
51,99064,030120,069
1912D
+0.7%
42,90942,119109,949
1908R
−16.3%
45,42963,803112,946
1904R
−41.0%
24,93665,12998,038
1900R
−15.6%
40,22855,46697,515
1896R
−20.3%
38,16557,74996,475
1892R
−4.4%
38,39241,96382,040
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%
Polish
1.0%
African American
19.3%
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
27.7%
Catholic & Orthodox
21.4%
Baptist
4.4%
Non-Christian
3.5%
Mainline Protestant
3.3%
Methodist
2.4%
Pentecostal & Holiness
1.6%
Source · 2020 US Religion Census. Remaining 35.7% of residents not counted as adherents by any reporting body.

Hamilton County anchors southwest Ohio with more than 845,000 residents and delivered a 14.9-point Democratic margin in 2024, a dramatic reversal from its long Republican lean driven by suburban realignment in and around Cincinnati.

The 2008 election was the turning point, when the Democratic candidate carried the county by seven points. The 2024 margin was fifteen points, in line with the county's new direction.

The demographics suggest why. A population of 830,774, a 63% non-Hispanic-white share, and a median household income of $72,470 situate the county in the broader realignment patterns of recent cycles. The county's voting pattern over the last decade is most similar to that of Henrico County and Loudoun County.