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
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Central Islip covers 7.2 sq mi of land at 5276 people per square mile.
About Central Islip, NY
Central Islip is distinguished by its share of foreign-born residents, 5.6% of the population. With 37,751 residents, Central Islip is a city in New York. It ranks #26 among cities in New York by population.
The typical household earns $110,166 a year, above the US median of $78,538. The poverty rate is 6.0%, below the national 12.4%. The typical home is valued at $405,000, with typical rent around $2,106.
Fewer adults hold degrees here than in most comparable places — 18.4%, below the national 35.0%. Most workers commute: only 6.6% work from home, below the national 14.0%, and the average commute runs about 28 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.
Central Islip Cdp, NY Climate
Central Islip Cdp, NY has an average annual temperature of 11.5°C (53°F) and receives about 1060 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.5°C
Avg Temp
1060
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 31° | 89 mm |
| February | 0° / 32° | 77 mm |
| March | 5° / 40° | 103 mm |
| April | 10° / 50° | 97 mm |
| May | 15° / 60° | 90 mm |
| June | 20° / 69° | 76 mm |
| July | 23° / 74° | 77 mm |
| August | 23° / 73° | 98 mm |
| September | 19° / 66° | 82 mm |
| October | 13° / 55° | 82 mm |
| November | 8° / 46° | 96 mm |
| December | 2° / 36° | 93 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Central Islip Cdp, NY
The most comfortable months to visit Central Islip Cdp, NY are typically June, September and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -5°C low). March is usually the wettest month.
Where to stay near Central Islip
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.