Sullivan County's 2026 population is estimated at 80,970, reflecting a 0.32% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Sullivan County is the 32nd largest county in New York. The 2010 population was 77,480 and has grown 4.5% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.7 years
Female: 41.9 years
Male: 41.4 years
There are 62,624 adults, (15,349 of whom are seniors) in Sullivan County.
Female: 38,342 (48.1%)
Male: 41,379 (51.9%)
The racial composition of Sullivan County includes 69.9% White, 9.25% Black or African American, 7.64% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 55,728 | 69.9% |
| Two or more races | 8,301 | 10.41% |
| Black or African American | 7,374 | 9.25% |
| Other race | 6,089 | 7.64% |
| Asian | 1,696 | 2.13% |
| Native American | 512 | 0.64% |
| Native Hawaiian or Pacific Islander | 21 | 0.03% |
Sullivan County 's average per capita income is $49,109. Household income levels show a median of $72,382. The poverty rate stands at 15.85%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $115,921 | $152,865 |
| Families | $92,132 | $127,593 |
| Households | $72,382 | $105,703 |
| Non Families | $42,124 | $64,284 |
Average Income
Median Household Income
Poverty Rate