Islip CDP, New York Demographics & Population 2026
As of 2026, Islip CDP, New York has a total population of 17,224, the 111th largest city in New York, with a median household income of $122,596, which is 45% higher than the state average. The poverty rate is 5.8%.
Key Takeaways
- Household income is 45% above the state average — one of the wealthiest communities in New York.
Islip CDP Quick Facts
How Islip CDP Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 65 | National average: 60
Education
Educational Attainment (Adults 25+)
Islip CDP Rankings in New York
Explore New York Rankings
Cities Similar to Islip CDP
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Hampton Bays CDP | 17,138 | $129,080 | $688,900 | 42.6% | 8.8% |
| Bethpage CDP | 17,334 | $132,832 | $597,400 | 43.8% | 3.8% |
| Farmingville CDP | 16,605 | $129,920 | $444,300 | 29.9% | 5.7% |
| Kings Park CDP | 16,249 | $118,723 | $586,300 | 44.2% | 2.3% |
| Ronkonkoma CDP | 18,368 | $125,534 | $467,600 | 34.5% | 3.2% |
Population Overview
Islip CDP is a small city located in New York. The total population is 17,224. It ranks as the 111th most populous out of 1,287 cities and towns in New York.
Age Demographics
The median age in Islip CDP is 44.0 years. This is 11% higher than the state median of 39.6 years.
Economy, Income & Housing
The median household income in Islip CDP is $122,596. This is 45% higher than the state median of $84,578. Compared to the national median of $78,538, household income here is 56% higher. The poverty rate stands at 5.8%. This is 58% lower than the state poverty rate of 13.7%. The unemployment rate is 4.9%. This is 21% lower than the state rate of 6.2%. The median home value is $486,900. Housing costs are 21% higher than the state median of $403,000. The home-value-to-income ratio is 4.0x. 84.5% of occupied housing units are owner-occupied. This homeownership rate is 56% higher than the state average of 54.3%.
Race & Ethnicity
The largest racial or ethnic group in Islip CDP is White (non-Hispanic), making up 70.7% of the population. Hispanic or Latino residents account for 19.4%. The Black or African American population (3.6%) is well below the state average of 13.6%.
Education
34.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 12% lower than the state rate of 39.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 86.9%.
Data Sources & Methodology
All demographic data for Islip CDP, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,287 Census-designated places in New York. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Islip CDP, New York?
Islip CDP, New York has a population of 17,224 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Islip CDP, NY?
The median household income in Islip CDP is $122,596, which is 56% higher the national median of $78,538.
What is the poverty rate in Islip CDP, NY?
The poverty rate in Islip CDP is 5.8%. This means approximately 991 residents live below the federal poverty line.
What is the racial makeup of Islip CDP, New York?
Islip CDP's population is 70.7% White, 3.6% Black, 19.4% Hispanic/Latino, and 4.6% Asian.
What is the median home value in Islip CDP, NY?
The median home value in Islip CDP is $486,900. The home-value-to-income ratio is 4.0x.
How educated is Islip CDP, New York?
34.9% of adults (25+) in Islip CDP hold a bachelor's degree or higher, and 13.3% hold a graduate or professional degree.