
Riverside
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 2.647
- State:
- New York
Riverside is a CDP located in Suffolk County, New York. Riverside has a 2025 population of 2,954. Riverside is currently growing at a rate of 0.1% annually and its population has increased by 13.18% since the most recent census, which recorded a population of 2,610 in 2020.
The average household income in Riverside is $89,193 with a poverty rate of 26.03%. The median age in Riverside is 34.1 years: 36.5 years for males, and 29.2 years for females.