PlainZIP

Islip, NY

Single-footprint Census roll-up for Islip, NY: 1 USPS ZIP, population 14,961. 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 ISLIP-NY · Islip, NY 1 ZIPs · 14,961 pop · #2468/25278 · Suffolk County

INC-TOP · RANK-TOP · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-HIGH

  • INC-TOP $116,559
  • RANK-TOP #2468/25278
  • PHOTO-FINISH ≈ Central Islip
  • BOOK-ONE 1 ZIP
  • OWN-MID 83% owners
  • POP-TOWN 14,961
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $563,100

Nearest income peer: Central Islip, NY ( $2,510 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 Islip

Lowest/highest poles plus county-sharing cities nearest Islip 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, Islip, NY sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 10%
household income vs 25,278 US cities
14,961
city population (Census)
1
USPS ZIP codes covered
$116,559
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 $116,559 and home value $563,100 should be read as near-neighborhood numbers ; bachelor's attainment averages 35.7%.

Owner-occupancy sits in a mixed band (83.4%) - check the ZIP page's tenure split before treating Islip as a pure owner town.

Within New York, Cambria Heights is the closest lower-income city and Henderson Harbor the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Islip.

Population concentration

Islip's single ZIP 11751 carries the town

Islip is published as a single USPS ZIP. Code 11751 is the entire residential footprint (14,961 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Mid-pack ZBP load on Islip's one ZIP

Citywide ZBP: 349 establishments, 3,416 employees , annual payroll $184,522k (~23 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 11751 (349 units) ; leading NAICS Construction (55) · also Other services (except public administration) · Health care and social assistance .

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ZIP Codes in Islip, NY

These ZIP codes sit in Suffolk County, which covers 107 ZIP codes in all; 1 of them fall in Islip. See the Suffolk County roll-up →

Islip sits in the lower half of Suffolk County on income: Huntington Station, Bay Shore and Lindenhurst report more, Patchogue and Ronkonkoma report less. Huntington marks the far end of that range at $183,187, 57% above Islip.

ZIP Code Population Median income Establishments Density
11751 14,961 $116,559 349 1,436
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Islip 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 Islip, .