
West Sayville
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 1.919
- State:
- New York
West Sayville is a CDP located in Suffolk County, New York. West Sayville has a 2025 population of 5,037. West Sayville is currently growing at a rate of 0.02% annually and its population has increased by 1.63% since the most recent census, which recorded a population of 4,956 in 2020.
The average household income in West Sayville is $178,137 with a poverty rate of 1.8%. The median age in West Sayville is 45.8 years: 47.9 years for males, and 44.3 years for females.