Zip Code 11783
Seaford, New York — Nassau County
📍 ZIP code 11783 is in Seaford, Nassau County, New York.
ZIP code 11783 is located in Seaford, Nassau County, New York. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 21,588. The area code for ZIP code 11783 is 631.
Quick Answer
Zip code 11783 is in Seaford, New York (Nassau County). It has a population of 21,588, median household income of $164,128, and median home value of $626,700.
Population
21,588
Income
$164,128
Home Value
$626,700
Climate
85°F / 28°F
About Zip Code 11783
Zip code 11783 is located in Seaford, New York, within Nassau County. Home to approximately 21,588 residents, this area sits at an elevation of 25 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 631.
The median household income is $164,128 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $626,700, and the cost of living index is 213 (113% above the national average of 100).
Summers average a high of 85°F while winters drop to 28°F. The area receives about 43 in of rain and 27 in of snow annually. The zip code covers 3.5 square miles of land area.
Key Statistics
21,588
$164,128
$626,700
Eastern (EST/EDT)
631
25 ft
3.5 sq mi
41.4
7,320
Advertisement
Compare With Nearby Zip Codes
| Metric | 11783 | 11758 | 11793 | 11710 | 11762 | 11566 |
|---|---|---|---|---|---|---|
| City | Seaford, NY | Massapequa, NY | Wantagh, NY | Bellmore, NY | Massapequa Park, NY | Merrick, NY |
| Population | 21,588 | 54,741 | 31,497 | 34,459 | 22,447 | 35,172 |
| Median Income | $164,128 | $157,404 | $168,519 | $173,136 | $170,799 | $169,868 |
| Home Value | $626,700 | $624,800 | $633,600 | $647,000 | $623,000 | $679,000 |
| Cost of Living | 213 | 207 | 219 | 222 | 217 | 233 |
| Median Age | 41.4 | 44.3 | 42.2 | 41.4 | 42.7 | 41.9 |
Cost of Living
100 = National Average. Seaford's cost of living is 113% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.8x
Demographics
Zip code 11783 has a population of 21,588 people with a median age of 41.4. There are 7,320 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Seaford (11783) population trend from 2010 to 2024
↓ -14.8%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
85°F
28°F
43 in
27 in
Seaford experiences warm summers with average highs around 85°F. Winters are cool with lows averaging 28°F. The area receives about 27 in of snow per year.
Advertisement
Housing & Economy
Median Home Value
$626,700
Median Household Income
$164,128
With 7,320 housing units across 3.5 square miles, 11783 has a housing density of 2,091 units per square mile. The home price-to-income ratio is 3.8x.
Location & Geography
Latitude
40.6776°
Longitude
-73.4900°
Land Area
3.5 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 11783 (Seaford, NY) with distances:
Related Cities in New York
Explore zip codes in other New York cities:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 11783's $164,128. A way to compare Seaford to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 11783 (Seaford, NY). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
Explore New York
Popular "Near Me" Searches
Advertisement
People Also Ask
What zip code is Seaford, New York?
Seaford, New York uses zip code 11783.
What county is zip code 11783 in?
Zip code 11783 is located in Nassau County, New York.
What is the population of zip code 11783?
The population of zip code 11783 is 21,588 with a median age of 41.4.
Is 11783 in Seaford, New York?
Yes, zip code 11783 is in Seaford, Nassau County, New York. The area code is 631.
Frequently Asked Questions
What city is zip code 11783 in?
Zip code 11783 is in Seaford, New York. It is part of Nassau County and uses the Eastern (EST/EDT) timezone.
What is zip code 11783?
Zip code 11783 is a U.S. postal code in Seaford, New York (Nassau County). It has a population of 21,588 and covers 3.5 square miles.
What is the population of zip code 11783?
The population of zip code 11783 (Seaford, NY) is 21,588 with a median age of 41.4. There are approximately 7,320 housing units in this area.
What is the median income in zip code 11783?
The median household income in zip code 11783 (Seaford, NY) is $164,128 per year. The cost of living index is 213 (100 = national average).
What is the average home price in zip code 11783?
The median home value in zip code 11783 (Seaford, NY) is $626,700. The cost of living index is 213 compared to the national average of 100.
What county is zip code 11783 in?
Zip code 11783 is located in Nassau County, New York. The primary city is Seaford.
What is the area code for zip code 11783?
Zip code 11783 in Seaford, NY uses area code 631. It is located in the Eastern (EST/EDT) timezone.
Is zip code 11783 a good place to live?
Zip code 11783 (Seaford, NY) has a cost of living index of 213 (100 = national average), a median household income of $164,128, and median home values of $626,700. The median age is 41.4. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 11783?
The cost of living index for zip code 11783 (Seaford, NY) is 213, where 100 represents the national average. This area is above the national average. Median home value: $626,700.
What schools serve zip code 11783?
Zip code 11783 in Seaford, New York is served by the local school district of Nassau County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
People Also Searched For
Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.