States · New York · Suffolk County

Riverside, New York.

A community in Suffolk County, with no city government of its own. Zillow publishes no home prices for it: see Suffolk County’s.

Living in Riverside, Suffolk County, New York

Riverside, in Suffolk County, had 2,882 people in the 2020 census. Unemployment in Suffolk County was 4.1% in August 2026, and the county had 1.5% more jobs in 2025 than the year before. The most people in Suffolk County work in schools and health care, then professional services.

People 2,882 in the 2020 census
Household income Too few homes in Riverside for the Census survey to measure.
Unemployment 4.1% Suffolk County, August 2026; 4.0% a year before
Homes Too few homes in Riverside for the Census survey to measure.
  • 1,086households
  • 33%of adults have a degree
  • 2%work from home

What people in Suffolk County work in

  • Schools, hospitals and social care29%
  • Professional and business services13%
  • Shops (retail)11%
  • Building trades8%
  • Banks, insurance and property7%
  • Restaurants, hotels and entertainment7%

Employed residents by industry, from the Census survey. Suffolk County had 689,858 jobs in 2025, 1.5% more than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 38° and 22°; warmest in July, 83° and 63° 20° 40° 60° 80° J 38° 22° F M A M J J 83° 63° A S O N D
Average daily high and low for each month: coldest in January, 38° and 22°; warmest in July, 83° and 63° 20° 40° 60° 80° J 38° 22° F M A M J J 83° 63° A S O N D

Coldest in January, with highs near 38° and lows near 22°; warmest in July, with highs near 83° and lows near 63°. About 49 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Baiting Hollow weather station, 4 miles away (NOAA).

Largest workplaces in Suffolk County

  1. Stony Brook University HospitalGeneral hospital8,738FTE
  2. Stony Brook UniversityUniversity or college5,585
  3. Canon USACopier rental or leasing4,982
  4. South Shore University HospitalGeneral hospital3,739FTE
  5. Good Samaritan HospitalGeneral hospital3,305FTE
  6. New York Cancer & Blood SpecialistsOncologists' offices2,917
  7. Huntington HospitalGeneral hospital2,760FTE
  8. Internal Revenue ServiceFederal government · Department of the Treasury2,511

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 974 workplaces with 20 or more staff, 152,960 people in all across the county; Riverside has one of its own. Hospitals come from their Medicare cost reports (CMS, 2023), colleges from IPEDS (NCES, 2023–24) and federal offices from OPM's federal workforce data (2026); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. HurricanesRelatively moderate
  2. Winter weatherRelatively moderate
  3. Inland floodingRelatively moderate

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Riverside’s census tracts, against the rest of the country; all of them together, relatively low. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Suffolk County.