Seaford, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Seaford, New York is 15,884 as of the 2023 American Community Survey, making it the 122nd-largest city in New York. The median household income is $156,488, the median home value is $631,000, and the median age is 40.4.
15,884
Population
6086
People / sq mi
$156,488
Median Income
$631,000
Median Home Value
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Seaford covers 2.6 sq mi of land at 6086 people per square mile.
About Seaford, NY
Homeownership is the standout figure in Seaford: 93.4% of homes are owner-occupied, higher than the national rate. With 15,884 residents, Seaford is a city in New York.
Earnings sit at the high end: a median household income of $156,488, above the US median of $78,538. Poverty is among the lowest of comparable US cities, at 1.7% — below the national 12.4%. The median home value is $631,000, with typical rent around $2,612.
College attainment is above the local norm at 43.6%, above the national 35.0%. Around 9.9% of workers work from home, below the national 14.0%, and the average commute runs about 39 minutes each way.
The ownership rate anchors the housing story in Seaford, and tends to move with the age structure and home-value figures above.
Race & Ethnicity
| White | 87.2% |
| Black or African American | 2.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.4% |
| Two or More Races | 0.0% |
Economy & Income
$156,488
Median Household Income
$61,645
Per Capita Income
1.7%
Poverty Rate
4.0%
Unemployment Rate
Housing
$631,000
Median Home Value
$2,612
Median Rent
93.4%
Owner-Occupied
Education
96.5%
High School+
43.6%
Bachelor's+
Commute
17.2%
Drive Alone
65.6%
Public Transit
9.9%
Work From Home
38.8 min
Avg Commute
Community Profile
5.0%
Foreign Born
88.0%
Non-English at Home
3.7%
Veterans
8.1%
With Disability
98.2%
Health Insurance
96.4%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 27.6% |
| Finance, Insurance & Real Estate | 15.0% |
| Construction | 9.3% |
| Information | 7.9% |
| Education, Health Care & Social Services | 7.8% |
| Public Administration | 6.9% |
| Manufacturing | 5.0% |
| Transportation & Warehousing | 4.2% |
| Retail Trade | 4.1% |
| Arts, Entertainment & Food Services | 2.7% |
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Frequently Asked Questions
Seaford, New York has a population of 15,884 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 122nd-largest city in New York.
The median household income in Seaford, New York is $156,488, with 1.7% of residents living below the federal poverty level.
The median home value in Seaford, New York is $631,000, with median monthly rent at $2,612 and a homeownership rate of 93.4%.
The median age in Seaford, New York is 40.4 years. The population is 50.6% male and 49.4% female.
Seaford Cdp, NY Climate
Seaford Cdp, NY has an average annual temperature of 11.7°C (53°F) and receives about 1046 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.7°C
Avg Temp
1046
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 31° | 83 mm |
| February | 1° / 33° | 78 mm |
| March | 5° / 41° | 104 mm |
| April | 10° / 50° | 91 mm |
| May | 15° / 59° | 90 mm |
| June | 20° / 69° | 67 mm |
| July | 24° / 74° | 82 mm |
| August | 23° / 74° | 108 mm |
| September | 19° / 67° | 78 mm |
| October | 13° / 55° | 80 mm |
| November | 8° / 46° | 93 mm |
| December | 3° / 37° | 92 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Seaford Cdp, NY
The most comfortable months to visit Seaford Cdp, NY are typically June, September and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -4°C low). August is usually the wettest month.
Where to stay near Seaford
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.