
Terryville
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 3.155
- State:
- New York
Terryville is a CDP located in Suffolk County, New York. Terryville has a 2025 population of 10,650. Terryville is currently declining at a rate of -0.75% annually and its population has decreased by -6.88% since the most recent census, which recorded a population of 11,437 in 2020.
The average household income in Terryville is $129,350 with a poverty rate of 2.48%. The median age in Terryville is 40.6 years: 41.1 years for males, and 39.3 years for females.