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.
White
Asian
Black or African American
Two or more races
Other race
Native American
Native Hawaiian or Pacific Islander
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