Islip Terrace, New York Demographics & Population 2026
During the 2020–2024 ACS period, Islip Terrace, New York had a total population of 5,168, the 350th largest community in New York, with a median household income of $155,313, which is 81% higher than the state average. The poverty rate is 2.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 81% above the state average — one of the wealthiest communities in New York.
- An exceptionally low poverty rate of 2.6% — among the lowest in New York.
- Near full employment with an unemployment rate of just 0.6%.
Islip Terrace Quick Facts
How Islip Terrace Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 5,223 | 5,168 | -1.1% |
| Median household income | $155,741 | $155,313 | -0.3% |
| Median home value | $479,800 | $519,200 | +8.2% |
How Islip Terrace Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 65 | National average: 61
Education
Educational Attainment (Adults 25+)
Islip Terrace Rankings in New York
Explore New York Rankings
Other Cities in Suffolk County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| West Babylon | 43,570 | $129,519 | 5.9% | $531,900 |
| Coram | 39,539 | $105,220 | 7.5% | $452,100 |
| Central Islip | 38,373 | $113,707 | 9.2% | $436,400 |
| Commack | 36,558 | $169,792 | 4.2% | $678,200 |
| Huntington Station | 32,601 | $135,477 | 7.2% | $578,000 |
| Centereach | 31,839 | $132,240 | 5.3% | $514,800 |
| Bay Shore | 31,683 | $105,618 | 10.2% | $492,200 |
| Shirley | 28,375 | $112,788 | 6.5% | $424,900 |
| Deer Park | 27,990 | $137,105 | 3.4% | $543,500 |
| Lindenhurst | 27,142 | $130,128 | 5.7% | $521,500 |
Cities Similar to Islip Terrace
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Northwest Harbor | 5,205 | $160,375 | $1,573,300 | 61.4% | 20.8% |
| Carle Place | 5,188 | $145,500 | $744,400 | 48.0% | 4.3% |
| Lake Mohegan | 5,468 | $162,321 | $503,000 | 58.6% | 6.1% |
| Blue Point | 4,735 | $154,625 | $614,900 | 56.9% | 7.1% |
| Country Knolls | 5,445 | $143,036 | $383,700 | 58.8% | 1.4% |
Population Overview
Islip Terrace is a small city located in New York, within Suffolk County. The total population is 5,168. It ranks as the 350th most populous out of 1,289 Census-designated places in New York.
Age Demographics
The median age in Islip Terrace is 40.5 years. This is 2% higher than the state median of 39.8 years.
Economy, Income & Housing
The median household income in Islip Terrace is $155,313. This is 81% higher than the state median of $85,974. It is also 92% higher than the national median of $80,734. The poverty rate stands at 2.6%. This is 82% lower than the state poverty rate of 14.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.6%. This is 90% lower than the state rate of 6.4%. The median home value is $519,200. Housing costs are 23% higher than the state median of $423,800. The home-value-to-income ratio is 3.3x. 92.0% of occupied housing units are owner-occupied. This homeownership rate is 69% higher than the state average of 54.4%.
Race & Ethnicity
The largest racial or ethnic group in Islip Terrace is White (non-Hispanic), making up 76.0% of the population. Hispanic or Latino residents account for 19.7%. The Black or African American population (0.6%) is well below the state average of 13.4%. The Asian population (2.7%) is well below the state average of 9.0%.
Education
31.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 23% lower than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.2%.
Data Sources & Methodology
All demographic data for Islip Terrace, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,289 Census-designated places in New York. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Islip Terrace, New York?
Islip Terrace, New York has a population of 5,168 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Islip Terrace, NY?
The median household income in Islip Terrace is $155,313, which is 92% higher than the national median of $80,734.
What is the poverty rate in Islip Terrace, NY?
The poverty rate in Islip Terrace is 2.6%. This means approximately 133 residents live below the federal poverty line.
What is the racial makeup of Islip Terrace, New York?
Islip Terrace's population is 76.0% White, 0.6% Black, 19.7% Hispanic/Latino, and 2.7% Asian.
What is the median home value in Islip Terrace, NY?
The median home value in Islip Terrace is $519,200. The home-value-to-income ratio is 3.3x.
How educated is Islip Terrace, New York?
31.1% of adults (25+) in Islip Terrace hold a bachelor's degree or higher, and 14.0% hold a graduate or professional degree.