Lancaster County's 2026 population is estimated at 340,983, reflecting a 1.21% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Lancaster County is the 2nd largest county in Nebraska. The 2010 population was 286,175 and has grown 19.15% since 2010.
Data after 2023 is projected based on recent change
Overall: 34.3 years
Female: 35.2 years
Male: 33.5 years
There are 253,417 adults, (49,919 of whom are seniors) in Lancaster County.
Female: 162,368 (49.7%)
Male: 164,328 (50.3%)
The racial composition of Lancaster County includes 80.62% White, 4.08% Asian, 3.75% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 263,393 | 80.62% |
| Two or more races | 27,373 | 8.38% |
| Asian | 13,336 | 4.08% |
| Black or African American | 12,246 | 3.75% |
| Other race | 7,912 | 2.42% |
| Native American | 2,194 | 0.67% |
| Native Hawaiian or Pacific Islander | 242 | 0.07% |
Lancaster County 's average per capita income is $51,610. Household income levels show a median of $74,793. The poverty rate stands at 11.88%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $115,998 | $142,987 |
| Families | $101,840 | $125,612 |
| Households | $74,793 | $99,410 |
| Non Families | $45,551 | $59,305 |
Average Income
Median Household Income
Poverty Rate
