Jefferson County's 2026 population is estimated at 33,494, reflecting a 0.65% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Jefferson County is the 50th largest county in Indiana. The 2010 population was 32,399 and has grown 3.38% since 2010.
Overall: 41.8 years
Female: 42.2 years
Male: 41.5 years
There are 26,419 adults, (6,340 of whom are seniors) in Jefferson County.
Female: 17,138 (51.9%)
Male: 15,860 (48.1%)
The racial composition of Jefferson County includes 92.3% 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 | 30,457 | 92.3% |
| Two or more races | 1,356 | 4.11% |
| Other race | 501 | 1.52% |
| Black or African American | 343 | 1.04% |
| Asian | 270 | 0.82% |
| Native American | 60 | 0.18% |
| Native Hawaiian or Pacific Islander | 11 | 0.03% |
Jefferson County 's average per capita income is $45,061. Household income levels show a median of $64,577. The poverty rate stands at 12.34%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $95,498 | $111,198 |
| Families | $79,406 | $97,045 |
| Households | $64,577 | $82,160 |
| Non Families | $38,914 | $48,375 |
Average Income
Median Household Income
Poverty Rate
