Population 25,473 · Census ACS 2020–24
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Population and households in West Islip
Household size in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.09 | 2.79 | 2.68 | 2.68 |
| 2010–14 | 3.05 | 2.85 | 2.72 | 2.73 |
| 2015–19 | 3.11 | 2.82 | 2.69 | 2.71 |
| 2020–24 | 3.12 | 2.79 | 2.65 | 2.65 |
| Change | +0.03 | −0.00 | −0.03 | −0.03 |
West Islip is a place of big households: 3.12 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Households are largest in the east and smallest in the southwest.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 41.7 | 38.0 | 38.3 | 37.7 |
| 2010–14 | 42.6 | 38.7 | 39.0 | 38.6 |
| 2015–19 | 44.4 | 39.8 | 40.2 | 39.6 |
| 2020–24 | 39.0 | 40.4 | 40.8 | 40.1 |
| Change | −2.6 | +2.4 | +2.5 | +2.3 |
Half of the people in West Islip are younger than 39.0 and half are older, close to the national median of 40.1. The median age has dropped from 41.7 in 2006–10, even as the national median rose. Residents skew youngest in the east and oldest in the north.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.4% | 13.1% | 13.1% | 12.3% |
| 2010–14 | 6.6% | 12.8% | 12.7% | 12.3% |
| 2015–19 | 7.7% | 11.4% | 11.6% | 11.6% |
| 2020–24 | 7.7% | 11.6% | 11.6% | 11.6% |
| Change | −0.7 pts | −1.5 pts | −1.5 pts | −0.6 pts |
Single parents head only 7.7% of households in West Islip, well below the national share of 11.6%. The single-parent share is down 0.7 points from 2006–10, in line with the national trend.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in West Islip
Renters in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.7% | 47.1% | 44.8% | 33.3% |
| 2010–14 | 5.7% | 48.7% | 46.2% | 35.6% |
| 2015–19 | 3.4% | 48.8% | 46.2% | 36.0% |
| 2020–24 | 5.1% | 48.6% | 45.7% | 34.8% |
| Change | −0.6 pts | +1.5 pts | +0.9 pts | +1.5 pts |
Only 5.1% of households in West Islip rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over three in ten owners (31.1%) have paid off their mortgages, below the national share of 39.8%. The renter share has edged down 0.6 points since 2006–10, even as the national share rose. Of the 488 New York cities with 5,000+ people, only 17 have a lower share of renters.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.1% | 9.1% | 10.3% | 11.4% |
| 2010–14 | 3.5% | 9.0% | 10.4% | 11.4% |
| 2015–19 | 4.5% | 9.1% | 11.0% | 11.1% |
| 2020–24 | 2.4% | 7.9% | 9.7% | 9.6% |
| Change | −3.7 pts | −1.2 pts | −0.6 pts | −1.8 pts |
Only 2.4% of homes in West Islip are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Vacancy has fallen 3.7 points since 2006–10, as it has nationally. Only 11 of the 488 New York cities with 5,000+ people have a lower vacancy rate.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 1959 | 1957 | 1956 | 1974 |
| 2010–14 | 1960 | 1958 | 1957 | 1975 |
| 2015–19 | 1960 | 1959 | 1958 | 1977 |
| 2020–24 | 1961 | 1962 | 1961 | 1980 |
| Change | +2 | +5 | +5 | +6 |
West Islip is a place of older homes: half were built before 1961, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The New York area as a whole looks much the same.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,506 | $1,268 | $1,095 | $965 |
| 2010–14 | $1,431 | $1,377 | $1,201 | $1,040 |
| 2015–19 | $1,907 | $1,645 | $1,426 | $1,213 |
| 2020–24 | $2,650 | $2,060 | $1,794 | $1,571 |
| Change | +$1,144 | +$792 | +$698 | +$606 |
Rent in West Islip runs $2,650 a month at the median, utilities included, well above the U.S. median of $1,571. Rents are up $1,144 a month from 2006–10, a 76% jump, faster than rents rose nationally. Rent takes 29.4% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the west; the most affordable are in the south.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in West Islip
Bachelor's degrees in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 34.3% | 35.0% | 31.9% | 28.4% |
| 2010–14 | 35.8% | 36.7% | 33.4% | 29.6% |
| 2015–19 | 39.3% | 39.9% | 36.2% | 32.1% |
| 2020–24 | 49.5% | 43.6% | 39.8% | 35.6% |
| Change | +15.3 pts | +8.6 pts | +8.0 pts | +7.2 pts |
West Islip is highly educated: about half of adults 25 and older (49.5%) hold at least a bachelor's degree, far above the national share of 35.6%. Since 2006–10, the share with a degree has risen 15.3 points, as it has nationally. College graduates are most concentrated in the southwest and least in the northeast.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 93.6% | 83.7% | 84.0% | 84.9% |
| 2010–14 | 93.5% | 84.6% | 84.9% | 86.1% |
| 2015–19 | 94.8% | 86.2% | 86.5% | 87.7% |
| 2020–24 | 95.2% | 86.9% | 87.3% | 89.3% |
| Change | +1.6 pts | +3.3 pts | +3.3 pts | +4.3 pts |
High school completion is high in West Islip: 95.2% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 1.6 points from 2006–10, in line with the national trend.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in West Islip
| Period | West Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.2% | 7.9% | 7.7% | 8.1% |
| 2010–14 | 6.1% | 9.5% | 9.2% | 9.4% |
| 2015–19 | 4.3% | 5.7% | 5.7% | 5.6% |
| 2020–24 | 3.6% | 6.9% | 6.6% | 5.4% |
| Change | −2.6 pts | −0.9 pts | −1.2 pts | −2.7 pts |
Jobs have been easier to find in West Islip than nationally: unemployment was 3.6%, against 5.4%. Unemployment has fallen 2.6 points since 2006–10, in line with the national trend. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
West Islip compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| West Islip | 3.12 | 39.0 | 7.7% | 5.1% | 2.4% | 1961 | $2,650 | 49.5% | 95.2% | 3.6% |
| Brightwaters | 3.03 | 43.2 | 3.9% | 3.6% | 11.7% | 1944 | $1,719 | 63.0% | 99.2% | 4.4% |
| Babylon | 2.68 | 44.7 | 6.2% | 20.7% | 8.4% | 1957 | $2,333 | 50.9% | 96.0% | 3.5% |
| North Babylon | 3.06 | 42.0 | 4.5% | 12.6% | 3.0% | 1962 | $2,310 | 35.2% | 91.8% | 4.4% |
| Bay Shore | 3.33 | 37.7 | 15.0% | 30.2% | 6.4% | 1962 | $2,173 | 30.5% | 85.5% | 6.2% |
| Baywood | 3.98 | 38.6 | 13.9% | 13.8% | 7.0% | 1962 | $2,692 | 24.8% | 78.8% | 5.9% |
| West Babylon | 3.36 | 40.2 | 11.9% | 24.0% | 4.8% | 1962 | $2,362 | 32.2% | 91.6% | 5.6% |
| Deer Park | 3.24 | 37.8 | 8.8% | 18.4% | 5.6% | 1965 | $2,135 | 37.5% | 92.1% | 1.9% |
| North Bay Shore | 4.74 | 34.8 | 19.6% | 16.2% | 7.4% | 1971 | $1,761 | 13.8% | 70.2% | 4.1% |
| Lindenhurst | 3.16 | 40.2 | 8.8% | 15.4% | 8.5% | 1958 | $2,000 | 32.9% | 91.5% | 6.2% |
| North Lindenhurst | 3.11 | 43.8 | 12.7% | 20.2% | 5.6% | 1963 | $2,112 | 26.6% | 86.8% | 3.3% |
All figures 2020–24.
Cities with similar populations: Coral Terrace, FL · University Park, TX · Uniontown, PA · Union, KY · Trussville, AL · Tiffin, OH · Terrytown, LA · Emporia, KS · Edgewater, FL · Vega Alta, PR
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up West Islip. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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