11783   Zip Code Seaford Nassau NY United States

City Seaford
County Nassau
State New York
Latitude 40.67766
Longitude -73.49068
Population 21,127
Density 5966.58 people per square mile
Time Zone America/New York
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $176,993
Median individual: $71,487

Race

Mode: 85.9% White

Gender

 50.0% female 

Rent

  $2612 / month  

Median house value: $653,998.0

Age

Median: 41.3 years old

Education

With at least college degree: 47.5%
With STEM degree: 41.8%

Marital Status

 59.5% married 

Never married: 28.6%

Labor Force Participation

 67.9% working 

Unemployed: 3.1%

Average Family Size

 3.24 people 

Commute Time

 38.0 minutes 

Health Care

 2.1% uninsured 

Poverty

 2.8%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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