Butler County's 2026 population is estimated at 402,475, reflecting a 0.59% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Butler County is the 7th largest county in Ohio. The 2010 population was 369,111 and has grown 9.04% since 2010.
Overall: 37.2 years
Female: 38.2 years
Male: 36.3 years
There are 301,104 adults, (62,338 of whom are seniors) in Butler County.
Female: 198,829 (50.6%)
Male: 194,047 (49.4%)
The racial composition of Butler County includes 75.78% White, 8.36% Black or African American, 4.33% Asian, 3.1% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 297,734 | 75.78% |
| Black or African American | 32,857 | 8.36% |
| Two or more races | 32,024 | 8.15% |
| Asian | 17,020 | 4.33% |
| Other race | 12,163 | 3.1% |
| Native American | 678 | 0.17% |
| Native Hawaiian or Pacific Islander | 400 | 0.1% |
Butler County 's average per capita income is $53,393. Household income levels show a median of $81,590. The poverty rate stands at 11.82%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $121,029 | $141,756 |
| Families | $102,983 | $124,514 |
| Households | $81,590 | $104,738 |
| Non Families | $44,531 | $60,891 |
Average Income
Median Household Income
Poverty Rate
