Residential delivery area · New York
ZIP Code 11721: Centerport, NY
ZIP code 11721 is in Centerport, New York, entirely in Suffolk County (Census 2020 ZIP-county file). About 6,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $197,179 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Centerport (84%), Greenlawn (9%) and Huntington (7%).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Centerport · its only residential ZIP
- County
- Suffolk County
- Census places
- Centerport (84%) census-designated place; Greenlawn (9%) census-designated place; Huntington (7%) 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
- 2.5 sq mi · 2,561 people per sq mi
Where is ZIP code 11721?
11721 centers on 40.902°, -73.371° and covers 2.5 square miles of land plus 1.4 of water. It borders 3 ZIP codes: 11768, 11740, 11743.
The map draws ZIP code areas only. For the streets inside 11721, 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 11721 compare with the rest of Suffolk County?
| Measure | 11721 | In Suffolk County | In NY |
|---|---|---|---|
| People (ACS 2020-2024) | 6,426 | 65th of 108 | 647th of 1,826 |
| Median household income | $197k | 3rd of 81 | 28th of 1,081 |
| Median home value | $740k | 22nd of 88 | 162nd of 1,172 |
Its median household income is higher than in 99% of U.S. residential ZIP codes, and it is denser than 87% 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 11721?
The 2020 Census counted 6,318 people in 11721; the ACS, which samples households over 2020-2024, estimates 6,426. Between the 2010 and 2020 censuses its population grew 0.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 6,426±705 (90% margin)
- 2020 Census count
- 6,318+0.4% since 2010 (6,292)
- Households
- 2,417
- Median age
- 50.2
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 11721?
Of the 6,426 people the ACS estimates in 11721, 19.8% are under 18 and 20.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (78.4%), then Hispanic or Latino (10.1%).
- Under 1819.8%
- 18 to 6459.4%
- 65 and older20.9%
- White, not Hispanic78.4%
- Hispanic or Latino10.1%
- Other or two or more8.5%
- Black, not Hispanic1.8%
- Asian, not Hispanic1.2%
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 11721 earn?
Median household income is $197,179 (ACS 2020-2024), the 3rd highest of the 81 ranked ZIP codes in Suffolk County. It is not measurably different from 2015-2019 ($174,203 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $197,179
- Income per person
- $109,501
- Below the poverty line
- 4.1%
- Unemployed (of the labor force)
- 6.5%
- Adults 25+ with a bachelor's degree
- 71.4%
- Adjusted gross income per tax return, 2022
- $201,2143,410 returns; wages 59% 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 11721?
FHFA's house price index for 11721, built from repeat sales and appraisals of the same homes, rose 66% from 2015 to 2025 and rose 41% from 2020 to 2025, and moved +1.9% in 2025.
- Median home value (owners' estimate)
- $740,300
- Median gross rent
- $3,500 or more
- Homes owned by their occupants
- 96.6%
- Housing units
- 2,484
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 11721?
175 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services46
- Construction27
- Other services (except public administration)16
- Health care and social assistance14
- Accommodation and food services12
- Finance and insurance10
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 11721?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 11768 | Northport | 22,030 | $173k | 2.2 mi |
| 11740 | Greenlawn | 10,127 | $152k | 2.6 mi |
| 11743 | Huntington | 43,490 | $183k | 3.0 mi |
| 11731 | East Northport | 29,999 | $161k | 4.0 mi (near) |
| 11724 | Cold Spring Harbor | 3,073 | $250k+ | 5.2 mi (near) |
| 11746 | Huntington Station | 65,747 | $165k | 6.1 mi (near) |
| 11725 | Commack | 29,073 | $168k | 6.4 mi (near) |
| 11754 | Kings Park | 17,565 | $123k | 6.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.