Population 13,658 · Census ACS 2020–24
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Population and households in Islip
Household size in Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.87 | 2.79 | 2.68 | 2.68 |
| 2010–14 | 2.84 | 2.85 | 2.72 | 2.73 |
| 2015–19 | 2.89 | 2.82 | 2.69 | 2.71 |
| 2020–24 | 2.84 | 2.79 | 2.65 | 2.65 |
| Change | −0.03 | −0.00 | −0.03 | −0.03 |
Households in Islip average 2.84 people, above the national 2.65, so families with children are more common here. Household size has edged down from 2.87 in 2006–10, as it has nationally. Households are largest in the west and smallest in the south.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.9 | 38.0 | 38.3 | 37.7 |
| 2010–14 | 42.7 | 38.7 | 39.0 | 38.6 |
| 2015–19 | 40.4 | 39.8 | 40.2 | 39.6 |
| 2020–24 | 45.7 | 40.4 | 40.8 | 40.1 |
| Change | +5.8 | +2.4 | +2.5 | +2.3 |
With a median age of 45.7, Islip is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 39.9, in line with the national trend. The youngest areas are in the north, the oldest in the south.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.7% | 13.1% | 13.1% | 12.3% |
| 2010–14 | 5.5% | 12.8% | 12.7% | 12.3% |
| 2015–19 | 7.7% | 11.4% | 11.6% | 11.6% |
| 2020–24 | 6.4% | 11.6% | 11.6% | 11.6% |
| Change | −3.3 pts | −1.5 pts | −1.5 pts | −0.6 pts |
Single-parent households are relatively rare in Islip: 6.4% of households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 3.3 points, a much bigger shift than nationally.
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 Islip
Renters in Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 19.5% | 47.1% | 44.8% | 33.3% |
| 2010–14 | 19.3% | 48.7% | 46.2% | 35.6% |
| 2015–19 | 12.4% | 48.8% | 46.2% | 36.0% |
| 2020–24 | 17.1% | 48.6% | 45.7% | 34.8% |
| Change | −2.4 pts | +1.5 pts | +0.9 pts | +1.5 pts |
Islip is largely a place of homeowners: only 17.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 36.5% have no mortgage at all, below the national share of 39.8%. The renter share is down 2.4 points from 2006–10, even as the national share rose.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.1% | 9.1% | 10.3% | 11.4% |
| 2010–14 | 6.5% | 9.0% | 10.4% | 11.4% |
| 2015–19 | 7.2% | 9.1% | 11.0% | 11.1% |
| 2020–24 | 6.4% | 7.9% | 9.7% | 9.6% |
| Change | +2.3 pts | −1.2 pts | −0.6 pts | −1.8 pts |
Fewer homes sit empty in Islip than nationally: 6.4%, against 9.6% for the U.S. The New York area as a whole looks much the same. Since 2006–10, vacancy has risen 2.3 points, even as the national rate fell.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 1961 | 1957 | 1956 | 1974 |
| 2010–14 | 1962 | 1958 | 1957 | 1975 |
| 2015–19 | 1959 | 1959 | 1958 | 1977 |
| 2020–24 | 1963 | 1962 | 1961 | 1980 |
| Change | +3 | +5 | +5 | +6 |
The housing in Islip is old by national standards: the median home dates to 1963, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. The picture is much the same across the New York area.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,408 | $1,268 | $1,095 | $965 |
| 2010–14 | $1,554 | $1,377 | $1,201 | $1,040 |
| 2015–19 | $1,573 | $1,645 | $1,426 | $1,213 |
| 2020–24 | $2,466 | $2,060 | $1,794 | $1,571 |
| Change | +$1,058 | +$792 | +$698 | +$606 |
Rent in Islip runs $2,466 a month at the median, utilities included, well above the U.S. median of $1,571. Rent has climbed $1,058 a month since 2006–10, up 75%, faster than rents rose nationally. Rent takes 39.9% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Rents run highest in the northeast and lowest in the northwest.
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 Islip
Bachelor's degrees in Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 29.7% | 35.0% | 31.9% | 28.4% |
| 2010–14 | 32.5% | 36.7% | 33.4% | 29.6% |
| 2015–19 | 39.4% | 39.9% | 36.2% | 32.1% |
| 2020–24 | 36.2% | 43.6% | 39.8% | 35.6% |
| Change | +6.5 pts | +8.6 pts | +8.0 pts | +7.2 pts |
More than a third of adults 25 and older in Islip (36.2%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in the New York area as a whole (43.6%). The share with a degree has risen 6.5 points since 2006–10, mirroring the country.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 91.4% | 83.7% | 84.0% | 84.9% |
| 2010–14 | 94.4% | 84.6% | 84.9% | 86.1% |
| 2015–19 | 92.6% | 86.2% | 86.5% | 87.7% |
| 2020–24 | 89.7% | 86.9% | 87.3% | 89.3% |
| Change | −1.7 pts | +3.3 pts | +3.3 pts | +4.3 pts |
About as many adults in Islip have finished high school as nationally: 89.7%, against 89.3%. The rate is higher than in the wider New York area (86.9%). The share with a diploma has fallen 1.7 points since 2006–10, even as the national rate rose.
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 Islip
| Period | Islip | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.2% | 7.9% | 7.7% | 8.1% |
| 2010–14 | 6.2% | 9.5% | 9.2% | 9.4% |
| 2015–19 | 3.4% | 5.7% | 5.7% | 5.6% |
| 2020–24 | 5.7% | 6.9% | 6.6% | 5.4% |
| Change | −0.5 pts | −0.9 pts | −1.2 pts | −2.7 pts |
Unemployment in Islip is close to the national rate: 5.7% of the labor force, against 5.4%. The rate is lower than in the New York area overall (6.9%). Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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).
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Islip | 2.84 | 45.7 | 6.4% | 17.1% | 6.4% | 1963 | $2,466 | 36.2% | 89.7% | 5.7% |
| East Islip | 2.95 | 44.7 | 8.3% | 15.2% | 4.4% | 1962 | $2,734 | 44.6% | 93.6% | 1.6% |
| Islip Terrace | 3.16 | 42.2 | 7.0% | 10.5% | 5.4% | 1960 | $2,635 | 30.0% | 91.2% | 1.2% |
| Bay Shore | 3.33 | 37.7 | 15.0% | 30.2% | 6.4% | 1962 | $2,173 | 30.5% | 85.5% | 6.2% |
| Brightwaters | 3.03 | 43.2 | 3.9% | 3.6% | 11.7% | 1944 | $1,719 | 63.0% | 99.2% | 4.4% |
| North Bay Shore | 4.74 | 34.8 | 19.6% | 16.2% | 7.4% | 1971 | $1,761 | 13.8% | 70.2% | 4.1% |
| North Great River | 3.28 | 45.6 | 3.8% | 12.6% | 3.5% | 1965 | $2,416 | 28.6% | 86.2% | 3.0% |
| Great River | 2.60 | 52.0 | 1.3% | 3.8% | 9.0% | 1962 | $2,740 | 61.6% | 95.2% | 4.5% |
| Brentwood | 2.93 | 41.7 | 7.7% | 17.8% | 11.7% | 1970 | $2,255 | 40.2% | 0.0% | 4.7% |
| Central Islip | 4.58 | 35.3 | 18.5% | 20.1% | 9.8% | 1969 | $2,314 | 18.6% | 73.6% | 5.9% |
| Baywood | 3.98 | 38.6 | 13.9% | 13.8% | 7.0% | 1962 | $2,692 | 24.8% | 78.8% | 5.9% |
All figures 2020–24.
Cities with similar populations: Forsyth, GA · Dranesville, VA · Dubois, PA · Dunmore, PA · Durham, NH · East Bridgewater, MA · Eaton, OH · Eight Mile, AL · Elk City, OK · Fair Oaks Ranch, TX
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 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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