Riverside, Suffolk County, New York

Riverside, New York
U.S. Census map of Riverside.
Riverside
Location within the state of New York.
Coordinates: 40°54′28″N 72°39′45″W / 40.90778°N 72.66250°W / 40.90778; -72.66250
Country United States
State New York
CountySuffolk
TownSouthampton
Area
  Total
2.75 sq mi (7.11 km2)
  Land2.65 sq mi (6.85 km2)
  Water0.10 sq mi (0.26 km2)
Population
 (2020)
  Total
2,882
  Density1,088.78/sq mi (420.45/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code
11901
Area code(s)631, 934
FIPS code36-62066

Riverside is a hamlet and census-designated place (CDP) in Suffolk County, New York, United States. The population was 2,911 at the 2010 census.

Riverside is in the Town of Southampton and derives its name from being on the south bank of the Peconic River.