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Islip, NY
Census-designated place in Suffolk County, New York. ZIP codes: 11751.
Population
17,362
Land area
4.7sq mi
People per sq mi
3,656
ZIP codes
1
Islip and its ZIP codes
Islip at a glance
- Islip is about 8.7 times as dense as New York as a whole.
- By population, it ranks 110th among 1,289 cities and towns in New York.
- The median household income is $120,909, 41% above the New York median of $85,974.
- A typical owner-occupied home is valued at $542,200 (28% above New York) and median rent is $2,235 a month.
Local data for Islip, NY
Counts from official public data
Housing and community stats
Islip, NY, American Community Survey 2020-2024
Median household income
$120,909
Poverty rate
5.7%
Median home value
$542,200
Median rent
$2,235/mo
Homeownership
84.9%
Bachelor's or higher
34.3%
Median age
43.9
Average commute
27.9 min
Largest reported origins and ancestries: Italian Americans (4,133), Irish Americans (3,323), German Americans (2,228).
Economy and federal money
Jobs, pay, income and spending are for Suffolk County. PPP loans are for Islip.
Unemployment rate
4.1%
Aug 2026, +0.1 pts in a year
Average annual pay
$81,119
689,858 jobs, 2025
Income per person
$92,113
BEA, 2024
Federal spending
$11.1B
FY 2026, $7,299 per person
PPP loans
$42.4M
435 loans, 5,382 jobs reported
How people get to work
Islip, NY, workers 16 and older. American Community Survey 5-year estimates
- Drove alone78.1%
- Carpooled7.2%
- Public transit2.5%
- Walked1.3%
- Bicycle0.2%
- Taxi, ride-hailing, motorcycle or other0.5%
- Worked from home10.2%
Average one-way commute: 27.9 minutes for people who do not work from home.
Environment and hazard risk
Islip, NY, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: winter weather
Storm events since 1996
1,830
Countywide, mostly thunderstorm wind
Flood insurance policies
26,160
5.4% of homes, county
July high / Jan low
80° / 26°F
49.9 inches of rain a year
Hazards, floods and storm historyCheck a flood zone1 historic places
Health statistics
Share of adults in Islip, NY, CDC PLACES estimates
Obesity
30.0%
U.S. 33.3% -3.3 pts
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
10.6%
U.S. 12.8% -2.2 pts
Uninsured (18-64)
7.2%
U.S. 11.1% -3.9 pts
ZIP codes in Islip
1 in or overlapping Islip. Population shown
Cities near Islip
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Bay ShoreCensus-designated place | 1.5 mi | 5.7 |
| East IslipCensus-designated place | 1.8 mi | 4 |
| Islip TerraceCensus-designated place | 2 mi | 1.3 |
| BrightwatersVillage | 2.8 mi | 1 |
| North Bay ShoreCensus-designated place | 3.1 mi | 3.2 |
| North Great RiverCensus-designated place | 3.2 mi | 2.4 |
| West Bay ShoreCensus-designated place | 3.3 mi | 2.2 |
| Central IslipCensus-designated place | 3.6 mi | 7.2 |
| Great RiverCensus-designated place | 3.6 mi | 4.2 |
| BrentwoodCensus-designated place | 4.1 mi | 11 |
| OakdaleCensus-designated place | 4.2 mi | 3.2 |
| BaywoodCensus-designated place | 4.3 mi | 2.3 |
| West IslipCensus-designated place | 4.7 mi | 6.1 |
| BohemiaCensus-designated place | 5.6 mi | 8.6 |
| IslandiaVillage | 5.6 mi | 2.2 |
| West SayvilleCensus-designated place | 5.7 mi | 1.9 |
Frequently asked questions
- What county is Islip, NY in?
- Islip is in Suffolk County, New York.
- What ZIP codes are in Islip, NY?
- ZIP codes in or overlapping Islip include 11751.
- What is the population of Islip, NY?
- About 17,362 people live in Islip, based on American Community Survey 5-year estimates.
- What cities are near Islip?
- Nearby places include Bay Shore (1.5 mi), East Islip (1.8 mi), Islip Terrace (2 mi), Brightwaters (2.8 mi), North Bay Shore (3.1 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023