Hamilton County's 2026 population is estimated at 396,224, reflecting a 1.27% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Hamilton County is the 4th largest county in Tennessee. The 2010 population was 337,235 and has grown 17.49% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.5 years
Female: 40.8 years
Male: 38.1 years
There are 296,881 adults, (69,086 of whom are seniors) in Hamilton County.
Female: 193,712 (51.5%)
Male: 182,480 (48.5%)
The racial composition of Hamilton County includes 70.24% White, 17.04% Black or African American, 3.02% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 264,229 | 70.24% |
| Black or African American | 64,101 | 17.04% |
| Two or more races | 27,496 | 7.31% |
| Other race | 11,361 | 3.02% |
| Asian | 7,861 | 2.09% |
| Native American | 1,084 | 0.29% |
| Native Hawaiian or Pacific Islander | 60 | 0.02% |
Hamilton County 's average per capita income is $50,555. Household income levels show a median of $76,183. The poverty rate stands at 13.08%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $116,161 | $155,794 |
| Families | $99,031 | $131,673 |
| Households | $76,183 | $108,057 |
| Non Families | $45,962 | $64,875 |
Average Income
Median Household Income
Poverty Rate