
Grahamsville
- County:
- Sullivan County
- County Seat:
- No
- Area (mi²):
- 1.473
- State:
- New York
Grahamsville is a CDP located in Sullivan County, New York. Grahamsville has a 2025 population of 534. Grahamsville is currently growing at a rate of 7.23% annually and its population has increased by 18.67% since the most recent census, which recorded a population of 450 in 2020.
The average household income in Grahamsville is $108,989 with a poverty rate of 10.67%. The median age in Grahamsville is 50.2 years: 36.3 years for males, and 53.5 years for females.