Hamilton County, Ohio
Located in Ohio, Hamilton County has a population of 830,774 residents and a median age of 36.9 years, making it the #75 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 15.0%. The median home value is $241,900, and the median household income is $72,470, which is 4% below the national median.
Demographics
Hamilton County has a population of 830,774, making it the #75 most populous county in the US. The median age is 36.9 years, which is 5.1% below the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Hamilton County is $72,470, ranking #1,014 out of 3,222 counties — 3.6% below the national median. The poverty rate is 15.0% and unemployment stands at 5.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Hamilton County is $241,900 (-14.2% vs national). Renters pay a median of $1,075/mo and the homeownership rate is 59.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Hamilton County, 41.8% of adults age 25+ hold a bachelor's degree or higher, which is 24.1% above the national average, ranking #229 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Hamilton County is 75.5 years. 20.0% of adults report poor or fair health and 6.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.4% of adults in Hamilton County smoke , 38.6% are obese , and 24.9% report excessive drinking. The drug overdose death rate is 45.5 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Hamilton County is 11.2 per 100,000 and the suicide rate is 13.8 per 100,000. Motor vehicle deaths occur at a rate of 8.3 per 100,000.
Homicide Rate Trend
Families & Children
16.9% of children in Hamilton County live in poverty and the infant mortality rate is 8.4 per 1,000 live births. The teen birth rate is 19.8 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Hamilton County is 71.0%. The mean commute time is 25.1 min, which is 9.0% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Hamilton County voted Democratic with a margin of 14.9%. The vote was 57% Dem / 42.1% Rep. Compared to 2020, the margin shifted 0.9 toward Republicans .
Vote Share Over Time
About Hamilton County, Ohio
Hamilton County, Ohio has a total population of 830,774, making it the 75th most populous county in the United States. The median age in Hamilton County is 36.9 years, which is 5.1% below the national median of 38.9 years.
The median household income in Hamilton County is $72,470, which ranks #1,014 of 3,222 counties nationwide. This is 3.6% below the national median of $75,149. The poverty rate is 15.0%, higher than the national rate of 12.6%. The unemployment rate stands at 5.0%.
The median home value in Hamilton County is $241,900, 14.2% below the national median. Renters in Hamilton County pay a median gross rent of $1,075 per month. The homeownership rate is 59.3%, compared to the national rate of 64.4%.
In Hamilton County, 41.8% of residents aged 25 and older hold a bachelor's degree or higher, 24.1% above the national average of 33.7%. Health insurance coverage stands at 94.2% of the population. The average commute time for workers is 25.1 min.
Hamilton County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 62.3% of the population, followed by Black (non-Hispanic) (23.9%) and Two or More Races (5.4%).
All data for Hamilton County, Ohio comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.