West Islip Demographics and Population Profile

West Islip Demographics and Population Profile

West Islip is a vibrant community characterized by a stable residential structure and a diverse ancestral heritage. According to the most recent official data, the area is entirely urbanized, reflecting a densely settled community with a strong emphasis on family-oriented living.

Key Facts

  • Total Population: 27,048 (2020 Census).
  • Median Age: 42.5 years.
  • Urbanization: 100% of residents live in urban areas.
  • Housing: 9,021 total units with a low vacancy rate of 2.9%.
  • Primary Ancestry: Italian (43.7%) and Irish (14.9%) among Non-Hispanic Whites.
  • Household Structure: 66.3% of households are married couples.

Population and Age Distribution

As of the 2020 census, West Islip recorded a population of 27,048 residents. The community shows a balanced age distribution, with a median age of 42.5 years. Younger residents under the age of 18 make up 20.7% of the population, while seniors aged 65 and older account for 16.5%.

The gender ratio remains relatively balanced, with 96.3 males for every 100 females. When looking specifically at adults aged 18 and over, the ratio is 94.1 males for every 100 females.

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Household and Housing Statistics

The community consists of 8,763 households. Family dynamics are prominent here, as 34.9% of these households include children under the age of 18. Married-couple households are the most common, representing 66.3% of the total. Other household structures include female householders with no spouse or partner (18.5%) and male householders with no spouse or partner (10.8%).

Approximately 14.5% of all households consist of individuals living alone, and 7.8% of all households are individuals aged 65 or older living alone.

Regarding infrastructure, there are 9,021 housing units. The market is tight, with only a 2.9% overall vacancy rate. This is further broken down into a 0.6% homeowner vacancy rate and a 2.3% rental vacancy rate.

Racial and Ethnic Composition

West Islip is predominantly White, comprising 88.9% of the population. However, the community includes a variety of ethnic backgrounds. Hispanic or Latino residents make up 9.8% of the population, with Puerto Ricans representing 37.1% of the Hispanic community.

Other racial groups include those identifying as two or more races (5.9%), Asian (2.0%), and "some other race" (2.0%). Black or African American residents make up 1.0%, and American Indian and Alaska Native residents account for 0.1%.

Among the Non-Hispanic White population, residents reported strong ties to European ancestries, most notably Italian (43.7%), Irish (14.9%), German (5.9%), and Turkish (1.9%).

West Islip Population and Racial Breakdown (2020)
Race/Ethnicity Number Percentage
White 24,034 88.9%
Two or more races 1,606 5.9%
Asian 540 2.0%
Some other race 547 2.0%
Black or African American 284 1.0%
American Indian and Alaska Native 32 0.1%
Native Hawaiian/Pacific Islander 5 0.0%

Historical Economic Data (2000 Census)

Data from the 2000 census provides a historical look at the community's economic standing. At that time, the median household income was $103,789, while the median family income was higher at $117,451. There was a noted gap in median earnings by gender, with males earning $75,868 compared to $54,389 for females.

The per capita income—the average income computed for every man, woman, and child in the area—was $38,933. During this period, 3.4% of the population and 2.9% of families lived below the poverty line.

Frequently Asked Questions

What was the total population of West Islip in 2020?

According to the 2020 U.S. Decennial Census, the population of West Islip was 27,048.

What is the most common ancestry in West Islip?

Among Non-Hispanic White residents, Italian ancestry is the most common, claimed by 43.7% of that group.

How many residents in West Islip live in rural areas?

Zero percent of residents live in rural areas; 100% of the population resides in urban areas.

What is the housing vacancy rate in West Islip?

The overall vacancy rate for housing units is 2.9%, with homeowner vacancies at 0.6% and rental vacancies at 2.3%.

What was the median age of residents in 2020?

The median age of the population was 42.5 years.

References

  1. "ArcGIS REST Services Directory". United States Census Bureau. Retrieved September 20, 2022.
  2. "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
  3. "West Islip". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved February 24, 2026.
  4. "Geographic Identifiers: 2010 Demographic Profile Data (G001): West Islip CDP, New York". U.S. Census Bureau, American Factfinder. Retrieved January 10, 2013.{{cite web}}: CS1 maint: deprecated archival service (link)
  5. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.