Zip Code 11901
Riverhead, New York — Suffolk County
📍 ZIP code 11901 is in Riverhead, Suffolk County, New York.
ZIP code 11901 is located in Riverhead, Suffolk County, New York. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 32,921. The area code for ZIP code 11901 is 631.
Quick Answer
Zip code 11901 is in Riverhead, New York (Suffolk County). It has a population of 32,921, median household income of $83,252, and median home value of $437,500.
Population
32,921
Income
$83,252
Home Value
$437,500
Climate
84°F / 26°F
About Zip Code 11901
Zip code 11901 is located in Riverhead, New York, within Suffolk County. Home to approximately 32,921 residents, this area sits at an elevation of 18 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 631.
The median household income is $83,252 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $437,500, and the cost of living index is 127 (27% above the national average of 100).
Summers average a high of 84°F while winters drop to 26°F. The area receives about 47 in of rain and 26 in of snow annually. The zip code covers 55.2 square miles of land area and 5.1 square miles of water.
Key Statistics
32,921
$83,252
$437,500
Eastern (EST/EDT)
631
18 ft
55.2 sq mi
43.9
13,126
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Compare With Nearby Zip Codes
| Metric | 11901 | 11970 | 11947 | 11948 | 11972 | 11942 |
|---|---|---|---|---|---|---|
| City | Riverhead, NY | South Jamesport, NY | Jamesport, NY | Jamesport, NY | Speonk, NY | East Quogue, NY |
| Population | 32,921 | 468 | 248 | 775 | 309 | 5,871 |
| Median Income | $83,252 | $0 | $0 | $146,054 | $0 | $106,875 |
| Home Value | $437,500 | $729,000 | $0 | $909,200 | $851,600 | $801,100 |
| Cost of Living | 127 | 100 | 100 | 234 | 203 | 217 |
| Median Age | 43.9 | 73.5 | 51.4 | 48.7 | 47.8 | 53.2 |
Cost of Living
100 = National Average. Riverhead's cost of living is 27% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.3x
Demographics
Zip code 11901 has a population of 32,921 people with a median age of 43.9. There are 13,126 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Riverhead (11901) population trend from 2010 to 2024
↓ -30.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
84°F
26°F
47 in
26 in
Riverhead experiences warm summers with average highs around 84°F. Winters are cool with lows averaging 26°F. The area receives about 26 in of snow per year.
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Housing & Economy
Median Home Value
$437,500
Median Household Income
$83,252
With 13,126 housing units across 55.2 square miles, 11901 has a housing density of 238 units per square mile. The home price-to-income ratio is 5.3x.
Location & Geography
Latitude
40.9258°
Longitude
-72.6462°
Land Area
55.2 sq mi
Water Area
5.1 sq mi
Nearby Zip Codes
Zip codes closest to 11901 (Riverhead, NY) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 11901's $83,252. A way to compare Riverhead to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 11901 (Riverhead, NY). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Riverhead, New York?
Riverhead, New York uses zip code 11901.
What county is zip code 11901 in?
Zip code 11901 is located in Suffolk County, New York.
What is the population of zip code 11901?
The population of zip code 11901 is 32,921 with a median age of 43.9.
Is 11901 in Riverhead, New York?
Yes, zip code 11901 is in Riverhead, Suffolk County, New York. The area code is 631.
Frequently Asked Questions
What city is zip code 11901 in?
Zip code 11901 is in Riverhead, New York. It is part of Suffolk County and uses the Eastern (EST/EDT) timezone.
What is zip code 11901?
Zip code 11901 is a U.S. postal code in Riverhead, New York (Suffolk County). It has a population of 32,921 and covers 55.2 square miles.
What is the population of zip code 11901?
The population of zip code 11901 (Riverhead, NY) is 32,921 with a median age of 43.9. There are approximately 13,126 housing units in this area.
What is the median income in zip code 11901?
The median household income in zip code 11901 (Riverhead, NY) is $83,252 per year. The cost of living index is 127 (100 = national average).
What is the average home price in zip code 11901?
The median home value in zip code 11901 (Riverhead, NY) is $437,500. The cost of living index is 127 compared to the national average of 100.
What county is zip code 11901 in?
Zip code 11901 is located in Suffolk County, New York. The primary city is Riverhead.
What is the area code for zip code 11901?
Zip code 11901 in Riverhead, NY uses area code 631. It is located in the Eastern (EST/EDT) timezone.
Is zip code 11901 a good place to live?
Zip code 11901 (Riverhead, NY) has a cost of living index of 127 (100 = national average), a median household income of $83,252, and median home values of $437,500. The median age is 43.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 11901?
The cost of living index for zip code 11901 (Riverhead, NY) is 127, where 100 represents the national average. This area is above the national average. Median home value: $437,500.
What schools serve zip code 11901?
Zip code 11901 in Riverhead, New York is served by the local school district of Suffolk County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.