Nassau County's estimated 2026 population is 1,400,095 with a growth rate of 0.08% in the past year according to the most recent United States census data. Nassau County is the 6th largest county in New York. The 2010 population was 1,341,642 and has seen a growth of 4.36% since that time.
Data after 2023 is projected based on recent change
Overall: 42 years
Female: 43.2 years
Male: 40.6 years
There are 1,090,863 adults, (259,500 of whom are seniors) in Nassau County.
Female: 705,706 (50.8%)
Male: 683,885 (49.2%)
The racial composition of Nassau County includes 56.8% White, 12.23% Asian, 11.24% Black or African American, 9.23% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 789,352 | 56.8% |
| Asian | 169,900 | 12.23% |
| Black or African American | 156,203 | 11.24% |
| Two or more races | 142,379 | 10.25% |
| Other race | 128,325 | 9.23% |
| Native American | 3,134 | 0.23% |
| Native Hawaiian or Pacific Islander | 298 | 0.02% |
Nassau County's average per capita income is $74,834. Household income levels show a median of $146,202. The poverty rate stands at 5.42%.
Name | Median | Mean |
|---|---|---|
| Married Families | $189,334 | $238,810 |
| Families | $169,137 | $216,488 |
| Households | $146,202 | $191,704 |
| Non Families | $68,026 | $95,304 |
Average Income
Median Household Income
Poverty Rate
