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Seaford, NY
Census-designated place in Nassau County, New York. ZIP codes: 11783.
Population
15,549
Land area
2.6sq mi
People per sq mi
5,958
ZIP codes
1
Seaford and its ZIP codes
Seaford at a glance
- Seaford is about 14 times as dense as New York as a whole.
- By population, it ranks 125th among 1,289 cities and towns in New York.
- The median household income is $172,557, about 2 times the New York median of $85,974.
- A typical owner-occupied home is valued at $658,300 (55% above New York) and median rent is $2,489 a month.
Local data for Seaford, NY
Counts from official public data
Housing and community stats
Seaford, NY, American Community Survey 2020-2024
Median household income
$172,557
Poverty rate
3.6%
Median home value
$658,300
Median rent
$2,489/mo
Homeownership
92.9%
Bachelor's or higher
46.0%
Median age
40.3
Average commute
38.4 min
Largest reported origins and ancestries: Italian Americans (4,563), Irish Americans (2,828), German Americans (2,084).
Economy and federal money
Jobs, pay, income and spending are for Nassau County. PPP loans are for Seaford.
Unemployment rate
3.7%
Sep 2026, +0.2 pts in a year
Average annual pay
$79,801
636,274 jobs, 2025
Income per person
$109,400
BEA, 2024
Federal spending
$11.4B
FY 2026, $8,135 per person
PPP loans
$44.4M
600 loans, 5,183 jobs reported
How people get to work
Seaford, NY, workers 16 and older. American Community Survey 5-year estimates
- Drove alone63.3%
- Carpooled7.0%
- Public transit15.1%
- Walked1.1%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.4%
- Worked from home13.0%
Average one-way commute: 38.4 minutes for people who do not work from home.
Environment and hazard risk
Seaford, NY, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: winter weather
Storm events since 1996
800
Countywide, mostly thunderstorm wind
Flood insurance policies
35,824
9.7% of homes, county
July high / Jan low
85° / 28°F
42.8 inches of rain a year
Health statistics
Share of adults in Seaford, NY, CDC PLACES estimates
Obesity
28.1%
U.S. 33.3% -5.2 pts
Diabetes
8.5%
U.S. 12.1% -3.6 pts
Smoking
8.9%
U.S. 12.8% -3.9 pts
Uninsured (18-64)
4.4%
U.S. 11.1% -6.7 pts
ZIP codes in Seaford
1 in or overlapping Seaford. Population shown
Cities near Seaford
| Name | Distance | Land area (sq mi) |
|---|---|---|
| MassapequaCensus-designated place | 1.2 mi | 3.6 |
| WantaghCensus-designated place | 1.2 mi | 3.8 |
| Massapequa ParkVillage | 2.1 mi | 2.2 |
| BellmoreCensus-designated place | 2.2 mi | 2.4 |
| North WantaghCensus-designated place | 2.3 mi | 1.9 |
| North MassapequaCensus-designated place | 2.5 mi | 3 |
| North BellmoreCensus-designated place | 2.7 mi | 2.6 |
| East MassapequaCensus-designated place | 3 mi | 3.4 |
| MerrickCensus-designated place | 3.3 mi | 3.7 |
| LevittownCensus-designated place | 3.8 mi | 6.8 |
| PlainedgeCensus-designated place | 3.9 mi | 1.4 |
| North MerrickCensus-designated place | 3.9 mi | 1.7 |
| AmityvilleVillage | 4.1 mi | 2.1 |
| South FarmingdaleCensus-designated place | 4.1 mi | 2.2 |
| North AmityvilleCensus-designated place | 4.7 mi | 2.4 |
| RooseveltCensus-designated place | 5 mi | 1.8 |
Frequently asked questions
- What county is Seaford, NY in?
- Seaford is in Nassau County, New York.
- What ZIP codes are in Seaford, NY?
- ZIP codes in or overlapping Seaford include 11783.
- What is the population of Seaford, NY?
- About 15,549 people live in Seaford, based on American Community Survey 5-year estimates.
- What cities are near Seaford?
- Nearby places include Massapequa (1.2 mi), Wantagh (1.2 mi), Massapequa Park (2.1 mi), Bellmore (2.2 mi), North Wantagh (2.3 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023