Jefferson County's 2026 population is estimated at 61,857, reflecting a 2.18% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Jefferson County is the 26th largest county in Tennessee. The 2010 population was 51,719 and has grown 19.6% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.3 years
Female: 45.7 years
Male: 43.4 years
There are 45,931 adults, (11,764 of whom are seniors) in Jefferson County.
Female: 28,916 (50.9%)
Male: 27,948 (49.1%)
The racial composition of Jefferson County includes 90.6% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 51,517 | 90.6% |
| Two or more races | 3,006 | 5.29% |
| Other race | 1,142 | 2.01% |
| Black or African American | 844 | 1.48% |
| Asian | 318 | 0.56% |
| Native American | 36 | 0.06% |
| Native Hawaiian or Pacific Islander | 1 | 0% |
Jefferson County 's average per capita income is $41,887. Household income levels show a median of $66,114. The poverty rate stands at 11.39%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,255 | - |
| Families | $79,001 | $104,119 |
| Households | $66,114 | $90,264 |
| Non Families | $35,873 | $48,699 |
Average Income
Median Household Income
Poverty Rate
