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Advertise here →Iselin, NJ · Houses & Market Data
Iselin, New Jersey houses and real estate market data.
Houses in Iselin, NJ (Middlesex County) — Census median home value $394,200, county listing prices up about 2.5% over the past year. Market data for Iselin houses and the broader area.
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Iselin, NJ is in Middlesex County, New Jersey — this guide covers houses in Iselin and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 19,151, with a median household income of $112,615. Census data puts Iselin houses at a median value of $394,200 (all owner-occupied homes); Middlesex County's current median listing price runs $579,000, up about 2.5% over the past year.
Info from government sites and builders may have provided source info.
Market overview
Iselin housing market
Iselin is in Middlesex County, New Jersey. Manifest Census and county price-trend data provide baseline context for houses in Iselin and the surrounding county market.
Median home value (Census ACS)
$394,200
Population (Census ACS)
19,151
Median household income
$112,615
County price trend (2025)
6.1% YoY
Population, income, and median home value from the project batch manifest (Census ACS 2023 5-year). County price trend from FHFA county HPI when present in the manifest row.
At a glance
Iselin market snapshot
Population
19,151
County
Middlesex County
Median Household Income
$112,615
Median Home Value (city)
$394,200
Median Listing Price (Middlesex County)
$579,000
Median Gross Rent
$2,051/mo
Price Trend (YoY)
+2.5%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
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What makes Iselin different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Iselin's median home value — across all owner-occupied homes, not just recent sales — at $394,200. Separately, Middlesex County's current median listing price (via Realtor.com data, 2026-06-01) runs $579,000. These cover different geography (city vs. county) and different measures (assessed value vs. active listings), which is why we show both rather than picking one — full source list on our data sources page.
County Price Trend
Middlesex County's FHFA house price index shows a 6.1% annual change in 2025.
Population & Income
Iselin has an estimated population of 19,151 and a median household income of $112,615, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Iselin's Census-reported median home value works out to about 3.5x the area's median household income, and median gross rent runs roughly 22% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.
Nearby
Places around Iselin
County guide: Middlesex County — cities, market context, and local resources for the county that includes Iselin.
USAHouses.com also helps visitors looking in nearby Middlesex County and other New Jersey communities. Some locations may not yet have dedicated pages, but many licensed professionals in this region assist surrounding communities.
Nearby communities include Menlo Park Terrace, Colonia, Woodbridge, Fords, Avenel, Metuchen, Hopelawn, Sewaren, Port Reading, Keasbey, Perth Amboy, Carteret, South Plainfield, South Amboy, Sayreville, Highland Park.
Menlo Park Terrace market data
Nearby city · ~1.2 mi
Colonia market data
Nearby city · ~1.4 mi
Woodbridge market data
Nearby city · ~1.9 mi
Fords market data
Nearby city · ~2.4 mi
Avenel market data
Nearby city · ~2.5 mi
Metuchen market data
Nearby city · ~3.1 mi
Hopelawn market data
Nearby city · ~3.1 mi
Sewaren market data
Nearby city · ~3.5 mi
Port Reading market data
Nearby city · ~3.8 mi
Keasbey market data
Nearby city · ~3.8 mi
Perth Amboy market data
Nearby city · ~4.2 mi
Carteret market data
Nearby city · ~4.8 mi
South Plainfield market data
Nearby city · ~5.2 mi
South Amboy market data
Nearby city · ~6.1 mi
Sayreville market data
Nearby city · ~7.1 mi
Highland Park market data
Nearby city · ~7.6 mi
More New Jersey cities with market guides: Newark, Jersey City, Paterson, Elizabeth, Toms River, Trenton, Clifton, Camden.
Newark market data
Same-state city guide
Jersey City market data
Same-state city guide
Paterson market data
Same-state city guide
Elizabeth market data
Same-state city guide
Toms River market data
Same-state city guide
Trenton market data
Same-state city guide
Clifton market data
Same-state city guide
Camden market data
Same-state city guide
Adjacent-county Census places with USAHouses.com pages: Rahway (~3.2 mi), Garwood (~5.6 mi), Linden (~5.8 mi), Westfield (~5.8 mi), Cranford (~5.8 mi), Plainfield (~6.1 mi), Fanwood (~6.1 mi), Roselle (~6.4 mi), Roselle Park (~7.1 mi), North Plainfield (~7.4 mi), Kenilworth (~7.6 mi), Mountainside (~8.0 mi), Watchung (~8.0 mi), Kean University (~8.6 mi), Connecticut Farms (~8.8 mi), Union (~9.1 mi).
New construction: New homes near Iselin (Newark) · New Jersey new construction.
Census & home facts
Iselin data from published sources
Population (ACS 2023)
19,151
Median home value (ACS 2023)
$394,200
Median household income (ACS 2023)
$112,615
Median gross rent (ACS 2023)
$2,051
County FHFA annual change (2025)
6.1%
County median listing price (FRED/Realtor.com) (2026-06-01)
$579,000
Census place type
CDP
County
Middlesex County
Land area (Census Gazetteer 2024)
3.15 sq mi
Census GEOID
3434470
Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.
NewUSAHouses.com communities
Closest verified new-home communities near Iselin
Availability and pricing are controlled by the builder and may change; confirm with the builder.
Raritan Ridge ↗
D.R. Horton · Sayreville, New Jersey · ~6.1 mi · from $619,990
District Walk ↗
Pulte · East Brunswick, New Jersey · ~8.8 mi · from $599,990
Heritage at Aberdeen ↗
K. Hovnanian Homes · Aberdeen, New Jersey · ~10.8 mi
Townes at Main Street ↗
Toll Brothers · North Brunswick, New Jersey · ~13.3 mi · from $584,000
Cape Point Enterprises Llc ↗
Champion Homes · Morganville, New Jersey · ~14.1 mi
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Common questions
Iselin FAQ
What are houses worth in Iselin, NJ?
The Census Bureau's American Community Survey puts the median value of houses in Iselin at $394,200. Middlesex County's current median listing price runs $579,000, up about 2.5% over the past year.
How much do houses cost in Iselin, NJ?
For owner-occupied houses in Iselin, Census ACS data shows a median value of $394,200. Active listing prices in Middlesex County may differ — see the market snapshot above.
What types of houses are in Iselin, NJ?
Iselin houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Middlesex County communities where builders are active. The housing-stock section below uses Census ACS structure counts when available for this city.
What is the population of Iselin, NJ?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Iselin's population at approximately 19,151.
What's the median rent in Iselin, NJ?
The Census ACS estimates median gross rent in Iselin at approximately $2,051 per month.
What is the median household income in Iselin, NJ?
Census ACS data puts the median household income in Iselin at approximately $112,615.
Is the Iselin housing market growing?
Middlesex County's FHFA house price index shows a 6.1% annual change in 2025.
Is Iselin, NJ affordable relative to income?
Census ACS data puts Iselin's median home value at about 3.5 times the median household income, with median gross rent equal to roughly 22% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.
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