Nassau County's 2026 population is estimated at 109,970, reflecting a 2.61% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Nassau County is the 37th largest county in Florida. The 2010 population was 73,526 and has grown 49.57% since 2010.
Data after 2023 is projected based on recent change
Overall: 46.5 years
Female: 48.1 years
Male: 44.9 years
There are 78,936 adults, (23,395 of whom are seniors) in Nassau County.
Female: 49,473 (50.6%)
Male: 48,386 (49.4%)
The racial composition of Nassau County includes 85.05% White, 5.57% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 83,225 | 85.05% |
| Two or more races | 5,674 | 5.8% |
| Black or African American | 5,447 | 5.57% |
| Other race | 1,919 | 1.96% |
| Asian | 1,315 | 1.34% |
| Native American | 256 | 0.26% |
| Native Hawaiian or Pacific Islander | 23 | 0.02% |
Nassau County 's average per capita income is $50,791. Household income levels show a median of $89,804. The poverty rate stands at 9.68%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $117,817 | $145,069 |
| Families | $105,139 | $129,206 |
| Households | $89,804 | $116,081 |
| Non Families | $48,142 | $77,820 |
Average Income
Median Household Income
Poverty Rate