ZIP code
11783
Seaford, NY
11783 covers Seaford in Nassau County, with 21,588 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 11783. Methodology
ZIP code map of 11783

About ZIP code 11783
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 11783. Not ACS. Methodology
People in 11783
Race
- White18,615
- Black or African American181
- American Indian or Alaska Native20
- Asian573
- Native Hawaiian and Pacific Islander1
- Other race480
- Two or more races1,429
Hispanic or Latino (any race): 1,875
Age
- Under 102,228
- 10 to 192,606
- 20 to 292,510
- 30 to 392,420
- 40 to 492,600
- 50 to 593,324
- 60 to 692,902
- 70 to 791,704
- 80 and older1,005
Income and housing in 11783
Education
- High school graduate96.5%
- Bachelor's degree45.8%
- Graduate degree20.2%
Places covering 11783
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Seaford70.8%
- Levittown12.2%
- North Wantagh12.2%
- North Massapequa2.6%
- Plainedge2.2%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Nassau County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Population history for 11783
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 22,269 | |
| 2006 | 21,359 | |
| 2007 | 21,783 | |
| 2008 | 21,162 | |
| 2009 | 21,290 | |
| 2010 | 21,293 | |
| 2011 | 21,115 | 21,136 |
| 2012 | 21,131 | 20,970 |
| 2013 | 21,145 | 21,050 |
| 2014 | 21,170 | 21,110 |
| 2015 | 21,598 | 20,990 |
| 2016 | 21,823 | 21,070 |
| 2017 | 21,406 | 21,300 |
| 2018 | 21,265 | 21,120 |
| 2019 | 21,280 | 20,920 |
| 2020 | 21,285 | 20,980 |
| 2021 | 21,830 | 20,860 |
| 2022 | 21,916 | 21,020 |
| 2023 | 21,588 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 11783
12 nearest ZIP centroids (any distance)
- 11762Massapequa Park2.3 miPop 22,447 · Income $170,799
- 11710Bellmore2.4 miPop 34,459 · Income $173,136
- 11793Wantagh2.4 miPop 31,497 · Income $168,519
- 11758Massapequa2.4 miPop 54,741 · Income $157,404
- 11756Levittown3.5 miPop 42,553 · Income $139,901
- 11566Merrick3.6 miPop 35,172 · Income $169,868
- 11701Amityville4.0 miPop 28,174 · Income $110,639
- 11708Amityville4.2 miPop — · Income —
- 11737Farmingdale4.5 miPop — · Income —
- 11714Bethpage4.5 miPop 22,475 · Income $123,679
- 11554East Meadow4.7 miPop 35,806 · Income $128,770
- 11735Farmingdale4.8 miPop 32,778 · Income $146,190
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 11783, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 11783 FAQ
- What city is ZIP code 11783 in?
- 11783 is in Seaford, NY.
- What county is 11783 in?
- 11783 is in Nassau County.
- What is the median household income in 11783?
- The median household income in 11783 is $164,128.
- Which ZIP codes are near 11783?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 11783.