Nassau County's estimated 2025 population is 1,374,557 with a growth rate of -0.26% in the past year according to the most recent United States census data. Nassau County is the 5th largest county in New York. The 2010 population was 1,341,642 and has seen a growth of 2.45% since that time.
Data after 2023 is projected based on recent change
The racial composition of Nassau County includes 59.36% White, 11.53% Asian, 11.36% Black or African American, 8.5% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 824,058 | 59.36% |
| Asian | 160,088 | 11.53% |
| Black or African American | 157,663 | 11.36% |
| Two or more races | 124,822 | 8.99% |
| Other race | 118,042 | 8.5% |
| Native American | 3,170 | 0.23% |
| Native Hawaiian or Pacific Islander | 295 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Nassau County's average per capita income is $72,455. Household income levels show a median of $143,408. The poverty rate stands at 5.31%.
Name | Median | Mean |
|---|---|---|
| Married Families | $184,879 | $233,474 |
| Families | $165,692 | $211,848 |
| Households | $143,408 | $187,735 |
| Non Families | $66,477 | $94,054 |
Average Income
Median Household Income
Poverty Rate