West Islip CDP, New York Demographics & Population 2026

Population Overview

West Islip CDP is a mid-sized community located in New York. The total population is 26,559. It ranks as the 58th most populous out of 1,287 cities and towns in New York.

Age Demographics

The median age in West Islip CDP is 39.8 years. This is about average than the state median of 39.6 years.

Economy, Income & Housing

The median household income in West Islip CDP is $171,045. This is 102% higher than the state median of $84,578. Compared to the national median of $78,538, household income here is 118% higher. The poverty rate stands at 2.7%. This is 81% lower than the state poverty rate of 13.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.7%. This is 40% lower than the state rate of 6.2%. The median home value is $592,700. Housing costs are 47% higher than the state median of $403,000. The home-value-to-income ratio is 3.5x. 95.8% of occupied housing units are owner-occupied. This homeownership rate is 76% higher than the state average of 54.3%.

Race & Ethnicity

The largest racial or ethnic group in West Islip CDP is White (non-Hispanic), making up 81.1% of the population. Hispanic or Latino residents account for 12.3%. The White (non-Hispanic) population is significantly higher than the state average (81.1% vs 53.4%). The Black or African American population (1.0%) is well below the state average of 13.6%. The Asian population (1.8%) is well below the state average of 8.8%.

Education

50.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 27% higher 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 96.3%. Notably, 23.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for West 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.