Knox County's 2026 population is estimated at 517,092, reflecting a 1.01% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Knox County is the 3rd largest county in Tennessee. The 2010 population was 432,952 and has grown 19.43% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.4 years
Female: 38.6 years
Male: 36.1 years
There are 390,630 adults, (80,392 of whom are seniors) in Knox County.
Female: 252,122 (51%)
Male: 242,026 (49%)
The racial composition of Knox County includes 80.06% White, 8.06% 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 | 395,602 | 80.06% |
| Black or African American | 39,839 | 8.06% |
| Two or more races | 36,157 | 7.32% |
| Asian | 11,422 | 2.31% |
| Other race | 9,973 | 2.02% |
| Native American | 747 | 0.15% |
| Native Hawaiian or Pacific Islander | 408 | 0.08% |
Knox County 's average per capita income is $50,545. Household income levels show a median of $74,222. The poverty rate stands at 12.2%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $116,663 | $151,094 |
| Families | $98,977 | $131,047 |
| Households | $74,222 | $104,460 |
| Non Families | $43,410 | $60,944 |
Average Income
Median Household Income
Poverty Rate
