Central Islip, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Central Islip, New York is 37,751 as of the 2023 American Community Survey, making it the 26th-largest city in New York. The median household income is $110,166, the median home value is $405,000, and the median age is 33.9.
37,751
Population
5276
People / sq mi
$110,166
Median Income
$405,000
Median Home Value
Central Islip covers 7.2 sq mi of land at 5276 people per square mile.
About Central Islip, NY
Central Islip is a city in New York with a population of 37,751. It ranks #26 among cities in New York by population. The median age is 33.9, younger than the national median. The population is 50.3% male and 49.7% female.
The median household income in Central Islip is $110,166, above the US median of $74,580. 6.0% of residents live below the federal poverty level. Home values sit at a median of $405,000, with monthly rent averaging $2,106. The homeownership rate of 77.1% is higher than the national rate of 64.8%.
Educational attainment in Central Islip reflects 18.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.6% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 27.9 minutes each way.
Race & Ethnicity
| White | 28.5% |
| Black or African American | 19.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.3% |
| Two or More Races | 0.0% |
Economy & Income
$110,166
Median Household Income
$33,129
Per Capita Income
6.0%
Poverty Rate
3.7%
Unemployment Rate
Housing
$405,000
Median Home Value
$2,106
Median Rent
77.1%
Owner-Occupied
Education
76.9%
High School+
18.4%
Bachelor's+
Commute
3.1%
Drive Alone
75.2%
Public Transit
6.6%
Work From Home
27.9 min
Avg Commute
Community Profile
5.6%
Foreign Born
39.6%
Non-English at Home
2.7%
Veterans
9.0%
With Disability
90.1%
Health Insurance
94.6%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 27.1% |
| Finance, Insurance & Real Estate | 12.0% |
| Manufacturing | 9.9% |
| Construction | 9.0% |
| Retail Trade | 7.7% |
| Education, Health Care & Social Services | 6.6% |
| Public Administration | 3.9% |
| Information | 3.9% |
| Arts, Entertainment & Food Services | 3.6% |
| Transportation & Warehousing | 1.5% |
| Agriculture & Mining | 0.3% |
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Frequently Asked Questions
Central Islip, New York has a population of 37,751 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 26th-largest city in New York.
The median household income in Central Islip, New York is $110,166, with 6.0% of residents living below the federal poverty level.
The median home value in Central Islip, New York is $405,000, with median monthly rent at $2,106 and a homeownership rate of 77.1%.
The median age in Central Islip, New York is 33.9 years. The population is 50.3% male and 49.7% female.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.