Hamilton County's 2026 population is estimated at 848,959, reflecting a 0.69% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Hamilton County is the 3rd largest county in Ohio. The 2010 population was 802,295 and has grown 5.82% since 2010.
Data after 2023 is projected based on recent change
Overall: 36.9 years
Female: 38.2 years
Male: 35.6 years
There are 639,895 adults, (137,755 of whom are seniors) in Hamilton County.
Female: 427,155 (51.4%)
Male: 403,619 (48.6%)
The racial composition of Hamilton County includes 63.24% White, 24.09% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 525,380 | 63.24% |
| Black or African American | 200,129 | 24.09% |
| Two or more races | 64,928 | 7.82% |
| Asian | 22,631 | 2.72% |
| Other race | 15,458 | 1.86% |
| Native American | 1,676 | 0.2% |
| Native Hawaiian or Pacific Islander | 572 | 0.07% |
Hamilton County 's average per capita income is $52,950. Household income levels show a median of $72,470. The poverty rate stands at 14.97%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $126,905 | $169,472 |
| Families | $99,806 | $136,800 |
| Households | $72,470 | $106,643 |
| Non Families | $44,996 | $65,395 |
Average Income
Median Household Income
Poverty Rate