Central Islip, New York Demographics & Population 2026
During the 2020–2024 ACS period, Central Islip, New York had a total population of 38,373, the 27th largest community in New York, with a median household income of $113,707, which is 32% higher than the state average. The poverty rate is 9.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 32% above the state average — one of the wealthiest communities in New York.
Central Islip Quick Facts
How Central Islip 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 | 37,751 | 38,373 | +1.6% |
| Median household income | $110,166 | $113,707 | +3.2% |
| Median home value | $405,000 | $436,400 | +7.8% |
How Central Islip 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 diverse community with significant representation from multiple racial and ethnic groups.
State average: 65 | National average: 61
Education
Educational Attainment (Adults 25+)
Central Islip 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 |
| 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 |
| West Islip | 26,865 | $176,281 | 2.7% | $614,300 |
Cities Similar to Central Islip
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Elmont | 36,518 | $114,217 | $602,900 | 32.6% | 5.0% |
| Coram | 39,539 | $105,220 | $452,100 | 36.1% | 7.5% |
| East Meadow | 36,821 | $133,971 | $631,800 | 48.6% | 6.4% |
| Valley Stream | 40,315 | $133,190 | $616,100 | 39.7% | 5.5% |
| Freeport | 44,088 | $120,625 | $505,900 | 27.5% | 7.4% |
Population Overview
Central Islip is a mid-sized community located in New York, within Suffolk County. The total population is 38,373. It ranks as the 27th most populous out of 1,289 Census-designated places in New York.
Age Demographics
The median age in Central Islip is 34.6 years. This is 13% lower than the state median of 39.8 years.
Economy, Income & Housing
The median household income in Central Islip is $113,707. This is 32% higher than the state median of $85,974. It is also 41% higher than the national median of $80,734. The poverty rate stands at 9.2%. This is 34% lower than the state poverty rate of 14.0%. The unemployment rate is 6.1%. This is 5% lower than the state rate of 6.4%. The median home value is $436,400. Housing costs are 3% higher than the state median of $423,800. The home-value-to-income ratio is 3.8x. 78.2% of occupied housing units are owner-occupied. This homeownership rate is 44% higher than the state average of 54.4%.
Race & Ethnicity
The largest racial or ethnic group in Central Islip is Hispanic or Latino, making up 63.1% of the population. Black or African American residents account for 16.9%. The White (non-Hispanic) population (14.2%) is well below the state average of 52.8%. The Hispanic or Latino population is significantly higher than the state average (63.1% vs 19.8%). The Asian population (1.8%) is well below the state average of 9.0%.
Education
19.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 52% 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 76.1%.
Data Sources & Methodology
All demographic data for Central Islip, 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 Central Islip, New York?
Central Islip, New York has a population of 38,373 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Central Islip, NY?
The median household income in Central Islip is $113,707, which is 41% higher than the national median of $80,734.
What is the poverty rate in Central Islip, NY?
The poverty rate in Central Islip is 9.2%. This means approximately 3,464 residents live below the federal poverty line.
What is the racial makeup of Central Islip, New York?
Central Islip's population is 14.2% White, 16.9% Black, 63.1% Hispanic/Latino, and 1.8% Asian.
What is the median home value in Central Islip, NY?
The median home value in Central Islip is $436,400. The home-value-to-income ratio is 3.8x.
How educated is Central Islip, New York?
19.3% of adults (25+) in Central Islip hold a bachelor's degree or higher, and 7.1% hold a graduate or professional degree.