Residential delivery area · New York
ZIP Code 11901: Riverhead, NY
ZIP code 11901 uses the postal name Riverhead, New York and lies entirely in Suffolk County (Census 2020 ZIP-county file). About 33,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $85,061 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Riverhead (27%), Northampton (20%), Flanders (20%), Northville (13%), Aquebogue (6%), Jamesport (6%) and Riverside (5%), and 4% in smaller places.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Riverhead · its only residential ZIP
- County
- Suffolk County
- Census places
- Riverhead (27%) census-designated place; Northampton (20%) census-designated place; Flanders (20%) census-designated place; Northville (13%) census-designated place
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House district
- NY-1 119th Congress
- State
- New York
- Time zone
- Eastern
- Land area
- 56.7 sq mi · 584 people per sq mi
Where is ZIP code 11901?
11901 centers on 40.928°, -72.648° and covers 56.7 square miles of land plus 4.8 of water. It borders 12 ZIP codes: 11931, 11947, 11970, 11948, 11933, 11942, 11977, 11978, 11952, 11941 and more.
The map draws ZIP code areas only. For the streets inside 11901, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 11901 compare with the rest of Suffolk County?
| Measure | 11901 | In Suffolk County | In NY |
|---|---|---|---|
| People (ACS 2020-2024) | 33,091 | 10th of 108 | 189th of 1,826 |
| Median household income | $85k | 78th of 81 | 524th of 1,081 |
| Median home value | $454k | 78th of 88 | 402nd of 1,172 |
Its median household income is higher than in 68% of U.S. residential ZIP codes, and it is denser than 73% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 11901?
The 2020 Census counted 30,936 people in 11901; the ACS, which samples households over 2020-2024, estimates 33,091. Between the 2010 and 2020 censuses its population grew 13.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 33,091
- 2020 Census count
- 30,936+13.9% since 2010 (27,172)
- Households
- 12,085
- Median age
- 46.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 11901?
Of the 33,091 people the ACS estimates in 11901, 16.9% are under 18 and 24.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (52.9%), then Hispanic or Latino (29.7%).
- Under 1816.9%
- 18 to 6458.2%
- 65 and older24.9%
- White, not Hispanic52.9%
- Hispanic or Latino29.7%
- Black, not Hispanic8.9%
- Other or two or more6.0%
- Asian, not Hispanic2.5%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 11901 earn?
Median household income is $85,061 (ACS 2020-2024), the 78th highest of the 81 ranked ZIP codes in Suffolk County. It is not measurably different from 2015-2019 ($81,519 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $85,061±$11,902
- Income per person
- $39,728
- Below the poverty line
- 14.1%
- Unemployed (of the labor force)
- 5.2%
- Adults 25+ with a bachelor's degree
- 22.9%
- Adjusted gross income per tax return, 2022
- $66,71214,820 returns; wages 64% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 11901?
FHFA's house price index for 11901, built from repeat sales and appraisals of the same homes, rose 105% from 2015 to 2025 and rose 55% from 2020 to 2025, and moved +4.7% in 2025.
- Median home value (owners' estimate)
- $453,800
- Median gross rent
- $2,196
- Homes owned by their occupants
- 70.2%
- Housing units
- 13,578
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 11901?
1,288 business establishments had a location in this ZIP code in 2023, 68 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade287
- Construction214
- Health care and social assistance157
- Administrative and support and waste management and remediation services114
- Other services (except public administration)102
- Accommodation and food services99
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 11901?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 11931 | Aquebogue | 27 | – | 1.4 mi |
| 11947 | Jamesport | 148 | – | 3.6 mi |
| 11970 | South Jamesport | 416 | – | 4.1 mi |
| 11948 | Laurel | 924 | $148k | 5.6 mi |
| 11933 | Calverton | 6,693 | $74k | 6.2 mi |
| 11942 | East Quogue | 5,406 | $94k | 6.8 mi |
| 11977 | Westhampton | 2,843 | $151k | 7.1 mi |
| 11978 | Westhampton Beach | 4,705 | $125k | 7.1 mi |
| 11952 | Mattituck | 5,040 | $120k | 7.3 mi |
| 11941 | Eastport | 2,814 | $124k | 7.9 mi |
| 11946 | Hampton Bays | 15,819 | $134k | 8.1 mi |
| 11949 | Manorville | 14,563 | $139k | 9.2 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.