Islip, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Islip, New York is 17,224 as of the 2023 American Community Survey, making it the 111th-largest city in New York. The median household income is $122,596, the median home value is $486,900, and the median age is 44.0.
17,224
Population
3627
People / sq mi
$122,596
Median Income
$486,900
Median Home Value
Islip covers 4.7 sq mi of land at 3627 people per square mile.
About Islip, NY
Islip is a city in New York with a population of 17,224. It ranks #111 among cities in New York by population. The median age is 44.0, older than the national median. The population is 49.8% male and 50.2% female.
The median household income in Islip is $122,596, above the US median of $74,580. 3.4% of residents live below the federal poverty level. Home values sit at a median of $486,900, with monthly rent averaging $2,192. The homeownership rate of 84.5% is higher than the national rate of 64.8%.
Educational attainment in Islip reflects 35.0% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 8.2% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 29.1 minutes each way.
Race & Ethnicity
| White | 73.7% |
| Black or African American | 3.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Economy & Income
$122,596
Median Household Income
$49,289
Per Capita Income
3.4%
Poverty Rate
3.3%
Unemployment Rate
Housing
$486,900
Median Home Value
$2,192
Median Rent
84.5%
Owner-Occupied
Education
87.0%
High School+
35.0%
Bachelor's+
Commute
3.6%
Drive Alone
78.5%
Public Transit
8.2%
Work From Home
29.1 min
Avg Commute
Community Profile
6.6%
Foreign Born
83.1%
Non-English at Home
3.7%
Veterans
11.9%
With Disability
96.4%
Health Insurance
90.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 27.0% |
| Finance, Insurance & Real Estate | 14.3% |
| Construction | 6.9% |
| Manufacturing | 6.6% |
| Retail Trade | 6.2% |
| Information | 5.5% |
| Arts, Entertainment & Food Services | 5.2% |
| Public Administration | 5.0% |
| Education, Health Care & Social Services | 4.9% |
| Transportation & Warehousing | 1.7% |
| Agriculture & Mining | 0.1% |
Largest cities in New York
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Part of New York
Metro areas in New York
City rankings
Frequently Asked Questions
Islip, New York has a population of 17,224 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 111th-largest city in New York.
The median household income in Islip, New York is $122,596, with 3.4% of residents living below the federal poverty level.
The median home value in Islip, New York is $486,900, with median monthly rent at $2,192 and a homeownership rate of 84.5%.
The median age in Islip, New York is 44.0 years. The population is 49.8% male and 50.2% female.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.