Miami County's 2026 population is estimated at 114,054, reflecting a 0.93% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Miami County is the 25th largest county in Ohio. The 2010 population was 102,487 and has grown 11.29% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.3 years
Female: 42.2 years
Male: 40.2 years
There are 85,053 adults, (21,382 of whom are seniors) in Miami County.
Female: 55,426 (50.3%)
Male: 54,870 (49.7%)
The racial composition of Miami County includes 90.37% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 99,677 | 90.37% |
| Two or more races | 5,576 | 5.06% |
| Black or African American | 2,167 | 1.96% |
| Asian | 2,062 | 1.87% |
| Other race | 744 | 0.67% |
| Native American | 70 | 0.06% |
Miami County 's average per capita income is $51,520. Household income levels show a median of $76,817. The poverty rate stands at 9.37%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $109,027 | $128,520 |
| Families | $99,403 | $116,425 |
| Households | $76,817 | $96,707 |
| Non Families | $42,803 | $54,367 |
Average Income
Median Household Income
Poverty Rate
