Riverside
Census-designated place in Suffolk County, New York

Riverside is an unincorporated community (census-designated place) in Suffolk County, New York, with 2,882 residents (2020 Census). The nearest town is Northampton, 2.2 miles S.
- 2,882residents (2020 Census)
- 2.6 sq miland area · 6.9 km²
- 1,089 / sq mipopulation density
- 11901ZIP code
About Riverside
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.
Text: Wikipedia · CC BY-SA 4.0
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Living in Riverside
- Median household income
- $59,318
- Median rent
- $2,846/mo
- Median age
- 34.3
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Map of Riverside
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Open in Google Maps ›Riverside, NY population
Riverside had 2,882 residents in the 2020 Census.
| 2020 Census | 2,882 |
|---|---|
| Density | 1,089 per sq mi (420 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Riverside at a glance
| State | New York (NY) |
|---|---|
| County | Suffolk County |
| Type | Census-designated place |
| Population | 2,882 (2020) |
| Land area | 2.65 sq mi (6.9 km²) |
| Water area | 0.10 sq mi (0.26 km²) |
| Coordinates | 40.9051° N, 72.6717° W |
| ZIP code | 11901 |
| Census code (GEOID) | 3662066 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Riverside
- Northampton2.2 mi S
- Riverhead3.2 mi N
- Flanders3.7 mi E
- Westhampton4.1 mi S
- Aquebogue4.4 mi NE
- Northville5.3 mi NE
- Calverton5.4 mi W
- Baiting Hollow5.8 mi NW
- Eastport5.9 mi SW
- Jamesport6.0 mi NE
- Quiogue6.4 mi S
- Remsenburg-Speonk6.4 mi S
Straight-line distance between town centers.
Frequently asked questions about Riverside
What county is Riverside in?
Riverside is in Suffolk County, New York.
What is the population of Riverside, NY?
2,882 people lived in Riverside at the 2020 Census.
What is the ZIP code of Riverside, NY?
The ZIP code of Riverside is 11901.
What towns are near Riverside?
Northampton (2.2 mi), Riverhead (3.2 mi), Flanders (3.7 mi), Westhampton (4.1 mi), Aquebogue (4.4 mi).
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