
Wallkill
- County:
- Ulster County
- County Seat:
- No
- Area (mi²):
- 3.067
- State:
- New York
Wallkill is a CDP located in Ulster County, New York. Wallkill has a 2025 population of 1,752. Wallkill is currently declining at a rate of -2.01% annually and its population has decreased by -12.92% since the most recent census, which recorded a population of 2,012 in 2020.
The average household income in Wallkill is $95,208 with a poverty rate of 5.05%. The median age in Wallkill is 45.6 years: 40.3 years for males, and 49.2 years for females.