Jefferson County's 2026 population is estimated at 255,060, reflecting a 0.22% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Jefferson County is the 23rd largest county in Texas. The 2010 population was 252,457 and has grown 1.03% since 2010.
Data after 2023 is projected based on recent change
Overall: 37 years
Female: 38.2 years
Male: 36 years
There are 191,398 adults, (39,263 of whom are seniors) in Jefferson County.
Female: 122,993 (48.4%)
Male: 130,885 (51.6%)
The racial composition of Jefferson County includes 40.16% White, 32.96% Black or African American, 8.18% other race, 3.79% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 101,964 | 40.16% |
| Black or African American | 83,680 | 32.96% |
| Two or more races | 36,198 | 14.26% |
| Other race | 20,763 | 8.18% |
| Asian | 9,630 | 3.79% |
| Native American | 1,566 | 0.62% |
| Native Hawaiian or Pacific Islander | 77 | 0.03% |
Jefferson County 's average per capita income is $46,963. Household income levels show a median of $60,026. The poverty rate stands at 19.49%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $100,157 | $122,127 |
| Families | $75,099 | $97,941 |
| Households | $60,026 | $84,539 |
| Non Families | $39,772 | $55,937 |
Average Income
Median Household Income
Poverty Rate
