Hamilton County, Ohio: Realigning Affluent Suburb county. In 2024, voted D+15%. Republican peak: R+42 in 1924.
Key facts
- 2024 presidential margin
- D+15MIT Election Lab
- Political typology
- Realigning Affluent SuburbAkashic typology
- Population
- 830,7742024 5-year
- Median household income
- $72,4702024 5-year
- White (non-Hispanic)
- 63.2%2024 5-year
- Black
- 24.1%2024 5-year
- Hispanic / Latino
- 4.8%2024 5-year
- Peak Democratic margin
- D+16 in 1936MIT Election Lab
- Peak Republican margin
- R+42 in 1924MIT Election Lab
- Most similar
- Henrico County, VA · similarity 0.99
2024 results by precinct
2024 precinct map of Hamilton CountyPrecinct-level 2024 presidential results for Hamilton County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | −4.4% |
| 1896 | −20.3% |
| 1900 | −15.6% |
| 1904 | −41.0% |
| 1908 | −16.3% |
| 1912 | +0.7% |
| 1916 | −10.0% |
| 1920 | −17.8% |
| 1924 | −42.4% |
| 1928 | −14.5% |
| 1932 | +1.7% |
| 1936 | +15.9% |
| 1940 | −1.9% |
| 1944 | −3.5% |
| 1948 | −5.5% |
| 1952 | −19.2% |
| 1956 | −32.2% |
| 1960 | −9.0% |
| 1964 | +10.5% |
| 1968 | −13.3% |
| 1972 | −33.0% |
| 1976 | −21.4% |
| 1980 | −21.7% |
| 1984 | −27.2% |
| 1988 | −23.4% |
| 1992 | −10.9% |
| 1996 | −7.0% |
| 2000 | −11.3% |
| 2004 | −5.4% |
| 2008 | +7.0% |
| 2012 | +6.3% |
| 2016 | +10.1% |
| 2020 | +15.9% |
| 2024 | +14.8% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 233,360 | 172,365 | 413,213 | ||
| D | 246,266 | 177,886 | 430,929 | ||
| D | 215,719 | 173,665 | 417,456 | ||
| D | 219,927 | 193,326 | 421,997 | ||
| D | 225,213 | 195,530 | 425,086 | ||
| R | 199,679 | 222,616 | 424,025 | ||
| R | 161,578 | 204,175 | 377,899 | ||
| R | 160,458 | 186,493 | 372,068 | ||
| R | 148,409 | 192,447 | 403,420 | ||
| R | 140,354 | 227,004 | 370,384 | ||
| R | 140,350 | 246,288 | 388,815 | ||
| R | 129,114 | 206,979 | 358,541 | ||
| R | 135,605 | 211,267 | 353,079 | ||
| R | 119,054 | 239,212 | 364,385 | ||
| R | 135,057 | 183,611 | 365,483 | ||
| D | 199,127 | 161,179 | 360,306 | ||
| R | 176,215 | 211,068 | 387,283 | ||
| R | 113,797 | 222,009 | 335,806 | ||
| R | 140,785 | 207,690 | 348,475 | ||
| R | 135,290 | 151,055 | 288,413 | ||
| R | 144,470 | 154,960 | 299,430 | ||
| R | 148,907 | 154,733 | 303,640 | ||
| D | 153,117 | 108,506 | 280,436 | ||
| D | 123,109 | 118,804 | 249,076 | ||
| R | 110,151 | 147,534 | 258,692 | ||
| R | 34,916 | 115,950 | 191,029 | ||
| R | 77,598 | 112,590 | 196,966 | ||
| R | 51,990 | 64,030 | 120,069 | ||
| D | 42,909 | 42,119 | 109,949 | ||
| R | 45,429 | 63,803 | 112,946 | ||
| R | 24,936 | 65,129 | 98,038 | ||
| R | 40,228 | 55,466 | 97,515 | ||
| R | 38,165 | 57,749 | 96,475 | ||
| R | 38,392 | 41,963 | 82,040 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
25.3%
Irish
12.1%
English
9.5%
Italian
4.1%
American
3.5%
Polish
1.6%
French
1.5%
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. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 36.9 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$72,470
Hamilton County ranks near the middle of US counties.
Hamilton County$72,470
Ohio$71,389
United States$80,734
Hamilton County ranks near the middle of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
15.0%
Children face moderate poverty.
Children under 1819.8%
Working age (18–64)13.7%
Seniors (65+)11.0%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
91.9%
speak English only
Spanish3.0%
Other Indo-European2.7%
Asian & Pacific Islander1.4%
Other languages1.0%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
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.
Once reliably Republican — a margin of forty-two points in 1924 at its widest — Hamilton County has trended Democratic. Between 2020 and 2024 the county moved one point toward the Republican candidate; the 2024 margin was fifteen points.
A median household income of $72,470 — among the higher at this geographic scale — and a population of 830,774 describe the county. The county's voting pattern over the last decade is most similar to that of Henrico County and Loudoun 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.
Hamilton County, Ohio. Akashic. https://akashic.app/county/39061/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Hamilton County, Ohio vote in 2024?
In 2024, Hamilton County, Ohio voted Democratic by 14.8 points (D+15), carried by the Democratic candidate. Out of 413,213 votes cast, 233,360 went Democratic and 172,365 went Republican.
What is Hamilton County, Ohio's political typology?
Akashic places Hamilton County, Ohio in the "Realigning Affluent Suburb" typology — College-educated, affluent suburbs — the one bloc moving toward the Democratic Party. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 9 times, Republican 25 times, and other 0 times.
When did Hamilton County, Ohio last vote Republican?
The most recent presidential election in which Hamilton County, Ohio voted Republican was 2004.
How many people live in Hamilton County, Ohio?
Hamilton County, Ohio has a population of 830,774 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Hamilton County, Ohio?
Median household income in Hamilton County, Ohio is $72,470 — below the national median of $80,734. The Ohio state median is $71,389.
What is the political history of Hamilton County, Ohio?
Akashic tracks 38 presidential elections in Hamilton County, Ohio from 1876 to 2024. Of those, 9 went Democratic and 25 went Republican. The county's typology — "Realigning Affluent Suburb" — captures where that record, its demographics, and its recent swing place it among American communities.