Islip Terrace, New York.
Typical home $665,340 (+5.6% in a year). New York-Newark-Jersey City, NY-NJ-PA metro.
to buy the typical home at today's mortgage rate — +$1,820 (+109%) since Jan 2020.
- 1 year
- Up $35,293 +6%
- $630,047$665,340 since Sep 2025
- 5 years
- Up $144,850 +28%
- $520,491$665,340 since Sep 2021
Monthly payment to buy the typical home
Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.
- Islip Terrace$3,492
- New York$2,755
- United States$1,922
At the last five years' pace, a typical home here doubles in price every 14 years.
Typical home values in Islip Terrace, NY rose 5.6% over the past year — faster than the nation's +1.2%.
Living in Islip Terrace, Suffolk County, New York
Islip Terrace, in Suffolk County, had 5,323 people in the 2020 census. Half its households earn more than $155,313 a year and half less, against $130,686 across Suffolk County; 3% of its people live below the poverty line. 92% of its homes are lived in by their owners and 8% are rented. Unemployment in Suffolk County was 4.1% in August 2026, and the county had 1.5% more jobs in 2025 than the year before. The most residents work in schools and health care, then manufacturing.
Written by AI Claude Sonnet 5.5 wrote this on 23 October 2026 from the figures here, a list of nearby places and what it knows. It can be wrong or out of date.
What it’s like
The place. Islip Terrace is a small community on the South Shore of Long Island, in Suffolk County. Nearly everyone owns the home they live in, and household incomes run well above the county's, with very few residents living below the poverty line. Residents tend to be somewhat older than in many places, and homes here are costly. Winters are cold, with January highs near freezing and a fair amount of snow, while July is warm and the year brings plenty of rain and melted snow.
Work. Many residents work in schools, hospitals and social care, with manufacturing, shops and professional and business services also common. Commutes are long, and few people work from home. Across Suffolk County, some of the largest workplaces are Stony Brook University Hospital, Stony Brook University and South Shore University Hospital.
Things to do. Much of what draws people outdoors is close by. Bayard Cutting Arboretum State Park, a botanical garden, and Connetquot River State Park Preserve are in or beside town. Heckscher State Park is a short drive away, and Fire Island National Seashore is a longer drive.
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- 1,734households
- 31%of adults have a degree
- 3%below the poverty line
- 33 mintypical commute
- 6%work from home
What residents work in
Employed residents by industry, from the Census survey. Suffolk County had 689,858 jobs in 2025, 1.5% more than the year before (Bureau of Labor Statistics).
Weather through the year
Coldest in January, with highs near 39° and lows near 25°; warmest in July, with highs near 83° and lows near 67°. About 32 inches of snow and 46 inches of rain and melted snow a year.
Average daily high and low, 1991–2020, at the Islip Li Macarthur Airport weather station, 5 miles away (NOAA).
Largest workplaces in Suffolk County
- Stony Brook University HospitalGeneral hospital8,738FTE
- Stony Brook UniversityUniversity or college5,585
- Canon USACopier rental or leasing4,982
- South Shore University HospitalGeneral hospital3,739FTE
- Good Samaritan HospitalGeneral hospital3,305FTE
- New York Cancer & Blood SpecialistsOncologists' offices2,917
- Huntington HospitalGeneral hospital2,760FTE
- Internal Revenue ServiceFederal government · Department of the Treasury2,511
Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 974 workplaces with 20 or more staff, 152,960 people in all across the county; Islip Terrace has one of its own. Hospitals come from their Medicare cost reports (CMS, 2023), colleges from IPEDS (NCES, 2023–24) and federal offices from OPM's federal workforce data (2026); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.
Natural hazards
- HurricanesRelatively moderate
- Winter weatherRelatively moderate
- Strong windRelatively moderate
- Inland floodingRelatively moderate
- Cold wavesRelatively moderate
FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Islip Terrace’s census tracts, against the rest of the country; all of them together, relatively low. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.
From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Suffolk County and the New York-Newark-Jersey City, NY-NJ-PA metro.
Islip Terrace home values
Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.
- Islip Terrace$665,340
- New York$524,942
- United States$366,157
When this market ran hot
Each cell is that month's year-on-year home-value growth. Read left to right, top row is the latest year — the 2021–22 band is the boom.
Market heat, inside the city limits
Homes for sale
Active for-sale inventory. More supply hands power to buyers.
- Islip Terrace15
New listings per month
Sellers arriving at the market.
Not enough data to draw this yet.
Zip codes with a Islip Terrace address
A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Islip Terrace — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.