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Advertise here →Islandia, NY · Houses & Market Data
Islandia, New York houses and real estate market data.
Houses in Islandia, NY (Suffolk County) — Census median home value $451,700, county listing prices up about 1.9% over the past year. Market data for Islandia houses and the broader area.
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Islandia, NY is in Suffolk County, New York — this guide covers houses in Islandia and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 3,581, with a median household income of $112,435. Census data puts Islandia houses at a median value of $451,700 (all owner-occupied homes); Suffolk County's current median listing price runs $937,000, up about 1.9% over the past year.
Info from government sites and builders may have provided source info.
Market overview
Islandia housing market
Islandia is in Suffolk County, New York. Manifest Census and county price-trend data provide baseline context for houses in Islandia and the surrounding county market.
Median home value (Census ACS)
$451,700
Population (Census ACS)
3,581
Median household income
$112,435
County price trend (2025)
5.42% 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
Islandia market snapshot
Population
3,581
County
Suffolk County
Median Household Income
$112,435
Median Home Value (city)
$451,700
Median Listing Price (Suffolk County)
$937,000
Median Gross Rent
$1,781/mo
Price Trend (YoY)
+1.9%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
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What makes Islandia different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Islandia's median home value — across all owner-occupied homes, not just recent sales — at $451,700. Separately, Suffolk County's current median listing price (via Realtor.com data, 2026-06-01) runs $937,000. 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
Suffolk County's FHFA house price index shows a 5.42% annual change in 2025.
Population & Income
Islandia has an estimated population of 3,581 and a median household income of $112,435, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Islandia's Census-reported median home value works out to about 4.0x the area's median household income, and median gross rent runs roughly 19% 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 Islandia
County guide: Suffolk County — cities, market context, and local resources for the county that includes Islandia.
USAHouses.com also helps visitors looking in nearby Suffolk County and other New York communities. Some locations may not yet have dedicated pages, but many licensed professionals in this region assist surrounding communities.
Nearby communities include Central Islip, Hauppauge, Ronkonkoma, Bohemia, Nesconset, Village of the Branch, Lake Ronkonkoma, North Great River, Islip Terrace, Smithtown, Lake Grove, Brentwood, St. James, Oakdale, Holbrook, East Islip.
Central Islip market data
Nearby city · ~2.0 mi
Hauppauge market data
Nearby city · ~2.3 mi
Ronkonkoma market data
Nearby city · ~2.4 mi
Bohemia market data
Nearby city · ~2.8 mi
Nesconset market data
Nearby city · ~2.9 mi
Village of the Branch market data
Nearby city · ~3.3 mi
Lake Ronkonkoma market data
Nearby city · ~3.4 mi
North Great River market data
Nearby city · ~3.5 mi
Islip Terrace market data
Nearby city · ~4.0 mi
Smithtown market data
Nearby city · ~4.2 mi
Lake Grove market data
Nearby city · ~4.5 mi
Brentwood market data
Nearby city · ~4.5 mi
St. James market data
Nearby city · ~4.9 mi
Oakdale market data
Nearby city · ~5.1 mi
Holbrook market data
Nearby city · ~5.4 mi
East Islip market data
Nearby city · ~5.6 mi
More New York cities with market guides: Yonkers, Syracuse, Albany, New Rochelle, Cheektowaga, Mount Vernon, Schenectady, Utica.
Yonkers market data
Same-state city guide
Syracuse market data
Same-state city guide
Albany market data
Same-state city guide
New Rochelle market data
Same-state city guide
Cheektowaga market data
Same-state city guide
Mount Vernon market data
Same-state city guide
Schenectady market data
Same-state city guide
Utica market data
Same-state city guide
Adjacent-county Census places with USAHouses.com pages: Farmingdale (~15.3 mi), Old Bethpage (~15.5 mi), Woodbury (~15.8 mi), South Farmingdale (~15.8 mi), Plainview (~15.9 mi), Laurel Hollow (~16.4 mi), East Massapequa (~16.6 mi), Bethpage (~16.9 mi), Massapequa Park (~17.0 mi), Plainedge (~17.0 mi), North Massapequa (~17.2 mi), Syosset (~17.3 mi), Oyster Bay Cove (~17.9 mi), Cove Neck (~17.9 mi), Massapequa (~18.4 mi), Hicksville (~18.7 mi).
New construction: New homes near Islandia (New York City) · New York new construction.
Census & home facts
Islandia data from published sources
Population (ACS 2023)
3,581
Median home value (ACS 2023)
$451,700
Median household income (ACS 2023)
$112,435
Median gross rent (ACS 2023)
$1,781
County FHFA annual change (2025)
5.42%
County median listing price (FRED/Realtor.com) (2026-06-01)
$937,000
Census place type
village
County
Suffolk County
Land area (Census Gazetteer 2024)
2.21 sq mi
Census GEOID
3637840
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 Islandia
Availability and pricing are controlled by the builder and may change; confirm with the builder.
Manhasset Crest ↗
Toll Brothers · Manhasset, New York · ~25.9 mi · from $3,098,000
The Rose at Great Neck ↗
McKinley Homes · Great Neck, New York · ~29.4 mi
2700 Westchester ↗
Toll Brothers · Harrison, New York · ~30.8 mi · from $1,600,000
Enclave at Armonk ↗
Toll Brothers · Armonk, New York · ~34.9 mi · from $1,432,995
Enclave at Sprain Brook ↗
Toll Brothers · Yonkers, New York · ~37.1 mi · from $1,198,000
Local life
Life in Islandia
Schools
BRENTWOOD UNION FREE SCHOOL DISTRICT — 17 schools, 18,323 students enrolled, per the U.S. Department of Education's Common Core of Data. Suffolk addresses may be served by BRENTWOOD UNION FREE SCHOOL DISTRICT, but attendance zones vary by street — confirm assigned schools with the district before making a move.
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Common questions
Islandia FAQ
What are houses worth in Islandia, NY?
The Census Bureau's American Community Survey puts the median value of houses in Islandia at $451,700. Suffolk County's current median listing price runs $937,000, up about 1.9% over the past year.
How much do houses cost in Islandia, NY?
For owner-occupied houses in Islandia, Census ACS data shows a median value of $451,700. Active listing prices in Suffolk County may differ — see the market snapshot above.
What types of houses are in Islandia, NY?
Islandia houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Suffolk 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 Islandia, NY?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Islandia's population at approximately 3,581.
What's the median rent in Islandia, NY?
The Census ACS estimates median gross rent in Islandia at approximately $1,781 per month.
What is the median household income in Islandia, NY?
Census ACS data puts the median household income in Islandia at approximately $112,435.
Is the Islandia housing market growing?
Suffolk County's FHFA house price index shows a 5.42% annual change in 2025.
Is Islandia, NY affordable relative to income?
Census ACS data puts Islandia's median home value at about 4.0 times the median household income, with median gross rent equal to roughly 19% 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.
What school district serves Islandia, NY?
Manifest and public school-directory data suggest BRENTWOOD UNION FREE SCHOOL DISTRICT for many Islandia addresses, but attendance zones vary by street — verify your assigned schools with the district before making a move.
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