Jefferson County's 2026 population is estimated at 6,752, reflecting a -1.08% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Jefferson County is the 79th largest county in Mississippi. The 2010 population was 7,723 and has grown -12.57% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.1 years
Female: 45.1 years
Male: 38.5 years
There are 5,613 adults, (1,427 of whom are seniors) in Jefferson County.
Female: 3,586 (50.7%)
Male: 3,482 (49.3%)
The racial composition of Jefferson County includes 82.87% Black or African American, 13.14% White, and smaller percentages for Asian, Native American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Black or African American | 5,857 | 82.87% |
| White | 929 | 13.14% |
| Two or more races | 237 | 3.35% |
| Asian | 35 | 0.5% |
| Native American | 5 | 0.07% |
| Other race | 5 | 0.07% |
Jefferson County 's average per capita income is $32,155. Household income levels show a median of $38,305. The poverty rate stands at 32.49%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $78,588 | - |
| Families | $45,109 | $62,382 |
| Households | $38,305 | $56,585 |
| Non Families | $30,625 | $38,183 |
Average Income
Median Household Income
Poverty Rate