PlainZIP

Iselin, NJ

Single-footprint Census roll-up for Iselin, NJ: 1 USPS ZIP, population 18,459. 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 ISELIN-NJ · Iselin, NJ 1 ZIPs · 18,459 pop · #3133/25278 · Middlesex County

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

  • INC-HIGH $109,500
  • RANK-TOP #3133/25278
  • PHOTO-FINISH ≈ Old Bridge
  • BOOK-ONE 1 ZIP
  • OWN-MID 65% owners
  • POP-TOWN 18,459
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $426,800

Nearest income peer: Old Bridge, NJ ( $188 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 Iselin

Lowest/highest poles plus county-sharing cities nearest Iselin 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, Iselin, NJ sits among US cities with an upper-quartile household income, on a town-scale population base, across a single-ZIP footprint.

Top 12%
household income vs 25,278 US cities
18,459
city population (Census)
1
USPS ZIP codes covered
$109,500
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 $109,500 and home value $426,800 should be read as near-neighborhood numbers ; bachelor's attainment averages 53.7%.

Owner-occupancy sits in a mixed band (65.3%) - check the ZIP page's tenure split before treating Iselin as a pure owner town.

Within New Jersey, Three Bridges is the closest lower-income city and Roselle Park the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Iselin.

Population concentration

One ZIP, 08830, is all of Iselin

There is no split to weigh here: 08830 holds every one of Iselin's 18,459 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

Dense ZBP book packed into Iselin's one ZIP

Citywide ZBP: 789 establishments, 21,378 employees , annual payroll $2,743,263k (~43 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 08830 (789 units) ; leading NAICS Professional, scientific, and technical services (262) · also Retail trade · Finance and insurance .

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ZIP Codes in Iselin, NJ

These ZIP codes sit in Middlesex County, which covers 35 ZIP codes in all; 1 of them fall in Iselin. See the Middlesex County roll-up →

Iselin lands mid-pack among the 12 cities sharing Middlesex County: Edison, Piscataway and East Brunswick earn more and New Brunswick, Perth Amboy and South Amboy earn less. Perth Amboy marks the far end of that range at $64,491, 41% below Iselin.

ZIP Code Population Median income Establishments Density
08830 18,459 $109,500 789 2,245
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Iselin 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 Iselin, .