PlainZIP

Seaford, NY

Single-footprint Census roll-up for Seaford, NY: 1 USPS ZIP, population 21,288. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet SEAFORD-NY · Seaford, NY 1 ZIPs · 21,288 pop · #420/25278 · Nassau County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-HIGH · POP-TOWN · SPREAD-UNK · HOME-HIGH

  • INC-TOP $176,993
  • RANK-TOP #420/25278
  • ABOVE-PEER over New Hyde Park
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 94% owners
  • POP-TOWN 21,288
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $654,300

Nearest income peer: New Hyde Park, NY ( $22,297 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Seaford

Lowest/highest poles plus county-sharing cities nearest Seaford on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Seaford, NY sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 2%
household income vs 25,278 US cities
21,288
city population (Census)
1
USPS ZIP codes covered
$176,993
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $176,993 and home value $654,300 should be read as near-neighborhood numbers ; bachelor's attainment averages 47.6%.

Owner-occupancy here runs high (93.6%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within New York, Hewlett is the closest lower-income city and Merrick the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Seaford.

Population concentration

One ZIP, 11783, is all of Seaford

There is no split to weigh here: 11783 holds every one of Seaford's 21,288 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Mid-pack ZBP load on Seaford's one ZIP

Citywide ZBP: 494 establishments, 4,340 employees , annual payroll $223,162k (~23 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 11783 (494 units) ; leading NAICS Construction (89) · also Retail trade · Professional, scientific, and technical services .

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ZIP Codes in Seaford, NY

These ZIP codes sit in Nassau County, which covers 70 ZIP codes in all; 1 of them fall in Seaford. See the Nassau County roll-up →

No other city sharing Nassau County reports a higher average ZIP median income than Seaford. Valley Stream, Hempstead and Massapequa sit below it, so a household comparing this county on income alone starts here. Hempstead marks the far end of that range at $92,677, 48% below Seaford.

ZIP Code Population Median income Establishments Density
11783 21,288 $176,993 494 2,318
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Seaford roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Seaford, .