Suffolk County's 2026 population is estimated at 1,549,669, reflecting a 0.45% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Suffolk County is the 4th largest county in New York. The 2010 population was 1,494,337 and has grown 3.7% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.7 years
Female: 43.1 years
Male: 40.4 years
There are 1,212,247 adults, (274,038 of whom are seniors) in Suffolk County.
Female: 771,191 (50.4%)
Male: 758,955 (49.6%)
The racial composition of Suffolk County includes 65.82% White, 9.85% other race, 7.51% Black or African American, 4.49% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,007,146 | 65.82% |
| Two or more races | 181,580 | 11.87% |
| Other race | 150,706 | 9.85% |
| Black or African American | 114,943 | 7.51% |
| Asian | 68,632 | 4.49% |
| Native American | 6,949 | 0.45% |
| Native Hawaiian or Pacific Islander | 190 | 0.01% |
Suffolk County 's average per capita income is $66,805. Household income levels show a median of $130,686. The poverty rate stands at 6.42%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $167,054 | $206,332 |
| Families | $150,525 | $187,724 |
| Households | $130,686 | $166,220 |
| Non Families | $67,008 | $96,061 |
Average Income
Median Household Income
Poverty Rate
