
Wyandanch
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 2.17
- State:
- New York
Wyandanch is a CDP located in Suffolk County, New York. Wyandanch has a 2025 population of 14,090. Wyandanch is currently growing at a rate of 1.17% annually and its population has increased by 21.13% since the most recent census, which recorded a population of 11,632 in 2020.
The average household income in Wyandanch is $95,393 with a poverty rate of 18.19%. The median age in Wyandanch is 35.1 years: 38.6 years for males, and 33 years for females.