Jefferson County's 2026 population is estimated at 7,214, reflecting a 0.54% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Jefferson County is the 40th largest county in Nebraska. The 2010 population was 7,521 and has grown -4.08% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.4 years
Female: 44.8 years
Male: 43 years
There are 5,535 adults, (1,779 of whom are seniors) in Jefferson County.
Female: 3,651 (51%)
Male: 3,510 (49%)
The racial composition of Jefferson County includes 93.06% White, and smaller percentages for other race, Black or African American, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 6,664 | 93.06% |
| Two or more races | 387 | 5.4% |
| Other race | 71 | 0.99% |
| Black or African American | 22 | 0.31% |
| Native American | 15 | 0.21% |
| Asian | 2 | 0.03% |
Jefferson County 's average per capita income is $44,659. Household income levels show a median of $59,044. The poverty rate stands at 10.13%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $79,943 | - |
| Families | $75,663 | $95,464 |
| Households | $59,044 | $77,937 |
| Non Families | $38,868 | $48,821 |
Average Income
Median Household Income
Poverty Rate
