West Islip CDP, New York demographics
Population: 27,557
Median age: 40.4
Median household income: 141,957
West Islip is a CDP in Suffolk County, New York, United States.
Demographics, population, home values, social and economic characteristics of West Islip CDP, NY.
Population
| 2021 | 27,557 |
| 2020 | 26,614 |
| 2019 | 26,844 |
| 2018 | 27,149 |
| 2017 | 27,117 |
| 2016 | 27,231 |
| 2015 | 27,224 |
| 2014 | 27,545 |
| 2013 | 27,752 |
| 2012 | 28,145 |
| 2011 | 27,930 |
| 2010 | 28,692 |
| 2009 | 29,281 |
Census data for West Islip CDP, New York
Demographic and housing estimates in West Islip CDP, New York
| Total population | 27,557 |
| Male | 14,088 |
| Female | 13,469 |
| Total population | 27,557 |
| Under 5 years | 1,763 |
| 5 to 9 years | 1,473 |
| 10 to 14 years | 1,554 |
| 15 to 19 years | 1,714 |
| 20 to 24 years | 2,073 |
| 25 to 34 years | 3,396 |
| 35 to 44 years | 3,419 |
| 45 to 54 years | 4,125 |
| 55 to 59 years | 2,340 |
| 60 to 64 years | 1,897 |
| 65 to 74 years | 2,286 |
| 75 to 84 years | 1,099 |
| 85 years and over | 418 |
| Median age (years) | 40.4 |
| Under 18 years | 5,805 |
| 16 years and over | 22,526 |
| 18 years and over | 21,752 |
| 21 years and over | 20,778 |
| 62 years and over | 4,792 |
| 65 years and over | 3,803 |
| Total population | 27,557 |
| One race | 25,909 |
| White | 24,914 |
| Black or African American | 179 |
| American Indian and Alaska Native | 12 |
| Asian | 523 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 281 |
| Two or more races | 1,648 |
| Citizen, VOTING AGE 18 and over population | 21,448 |
| Male Citizen, VOTING AGE 18 and over population | 10,799 |
| Female Citizen, VOTING AGE 18 and over population | 10,649 |
Social characteristics in West Islip CDP, New York
| Total households | 8,607 |
| Family households (families) | 5,890 |
| Married-couple family | 396 |
| Male householder, no wife present, family | 877 |
| Female householder, no husband present, family | 504 |
| Nonfamily households | 1,444 |
| Average household size | 2,581 |
| Average family size | 3.16 |
Economic characteristics in West Islip CDP, New York
| Total households | 8,607 |
| Less than $10,000 | 155 |
| $10,000 to $14,999 | 60 |
| $15,000 to $24,999 | 177 |
| $25,000 to $34,999 | 151 |
| $35,000 to $49,999 | 554 |
| $50,000 to $74,999 | 759 |
| $75,000 to $99,999 | 976 |
| $100,000 to $149,999 | 1,855 |
| $150,000 to $199,999 | 1,428 |
| $200,000 or more | 2,492 |
| Median household income (dollars) | 141,957 |
Housing characteristics in West Islip CDP, New York
| Total housing units | 8,788 |
| Occupied housing units | 8,607 |
| Vacant housing units | 181 |
| Total housing units | 8,788 |
| 1-unit, detached | 8,532 |
| 1-unit, attached | 140 |
| 2 units | 33 |
| 3 or 4 units | 5 |
| 5 to 9 units | 39 |
| 10 to 19 units | 20 |
| 20 or more units | 0 |
| Mobile home | 19 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 8,788 |
| Built 2014 or later | 8 |
| Built 2010 to 2013 | 205 |
| Built 2000 to 2009 | 204 |
| Built 1990 to 1999 | 305 |
| Built 1980 to 1989 | 279 |
| Built 1970 to 1979 | 1,006 |
| Built 1960 to 1969 | 2,410 |
| Built 1950 to 1959 | 3,508 |
| Built 1940 to 1949 | 510 |
| Built 1939 or earlier | 353 |
| Total housing units | 8,788 |
| 1 room | 24 |
| 2 rooms | 37 |
| 3 rooms | 115 |
| 4 rooms | 304 |
| 5 rooms | 677 |
| 6 rooms | 1,762 |
| 7 rooms | 1,881 |
| 8 rooms | 1,579 |
| 9 rooms or more | 2,409 |
| Median rooms | 7.3 |
| Total housing units | 8,788 |
| No bedroom | 24 |
| 1 bedroom | 157 |
| 2 bedrooms | 616 |
| 3 bedrooms | 3,743 |
| 4 bedrooms | 3,215 |
| 5 or more bedrooms | 1,033 |
| Occupied housing units | 8,607 |
| Owner-occupied | 8,268 |
| Renter-occupied | 339 |
| Average household size of owner-occupied unit | 3.18 |
| Average household size of renter-occupied unit | 2.82 |
| Occupied housing units | 8,607 |
| Moved in 2017 or later | 463 |
| Moved in 2015 to 2016 | 1,342 |
| Moved in 2010 to 2014 | 754 |
| Moved in 2000 to 2009 | 1,834 |
| Moved in 1990 to 1999 | 1,822 |
| Moved in 1989 and earlier | 2,392 |
| Owner-occupied units | 8,268 |
| Less than $50,000 | 44 |
| $50,000 to $99,999 | 58 |
| $100,000 to $149,999 | 10 |
| $150,000 to $199,999 | 64 |
| $200,000 to $299,999 | 249 |
| $300,000 to $499,999 | 4,785 |
| $500,000 to $999,999 | 2,716 |
| $1,000,000 or more | 342 |
| Median (dollars) | 465,500 |
| Owner-occupied units | 8,268 |
| Housing units with a mortgage | 5,559 |
| Housing units without a mortgage | 2,709 |
| Occupied units paying rent | 331 |
| Less than $500 | 0 |
| $500 to $999 | 9 |
| $1,000 to $1,499 | 82 |
| $1,500 to $1,999 | 78 |
| $2,000 to $2,499 | 75 |
| $2,500 to $2,999 | 39 |
| $3,000 or more | 48 |
| Median (dollars) | 1,978 |
| No rent paid | 8 |
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