Population 3,600 · Census ACS 2020–24
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Population and households in Islandia
Household size in Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.00 | 2.79 | 2.68 | 2.68 |
| 2010–14 | 3.23 | 2.85 | 2.72 | 2.73 |
| 2015–19 | 3.19 | 2.82 | 2.69 | 2.71 |
| 2020–24 | 2.79 | 2.79 | 2.65 | 2.65 |
| Change | −0.21 | −0.00 | −0.03 | −0.03 |
Households in Islandia average 2.79 people, a bit above the national 2.65, so families with children are somewhat more common here. That is in line with the rest of the New York area. Household size has dropped from 3.00 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.0 | 38.0 | 38.3 | 37.7 |
| 2010–14 | 43.6 | 38.7 | 39.0 | 38.6 |
| 2015–19 | 39.4 | 39.8 | 40.2 | 39.6 |
| 2020–24 | 42.1 | 40.4 | 40.8 | 40.1 |
| Change | +3.1 | +2.4 | +2.5 | +2.3 |
Islandia skews a little older than the country: its median age is 42.1, against 40.1 nationally.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.1% | 13.1% | 13.1% | 12.3% |
| 2010–14 | 11.6% | 12.8% | 12.7% | 12.3% |
| 2015–19 | 10.2% | 11.4% | 11.6% | 11.6% |
| 2020–24 | 7.2% | 11.6% | 11.6% | 11.6% |
| Change | −0.9 pts | −1.5 pts | −1.5 pts | −0.6 pts |
Single-parent households are relatively rare in Islandia: 7.2% of households, against 11.6% 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 Islandia
Renters in Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.6% | 47.1% | 44.8% | 33.3% |
| 2010–14 | 10.4% | 48.7% | 46.2% | 35.6% |
| 2015–19 | 9.0% | 48.8% | 46.2% | 36.0% |
| 2020–24 | 4.0% | 48.6% | 45.7% | 34.8% |
| Change | −1.5 pts | +1.5 pts | +0.9 pts | +1.5 pts |
Islandia is overwhelmingly a place of homeowners: only 4.0% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. More than one in five owners (22.4%) have paid off their mortgages, well below the national share of 39.8%.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.1% | 9.1% | 10.3% | 11.4% |
| 2010–14 | 7.2% | 9.0% | 10.4% | 11.4% |
| 2015–19 | 11.1% | 9.1% | 11.0% | 11.1% |
| 2020–24 | 8.3% | 7.9% | 9.7% | 9.6% |
| Change | +2.2 pts | −1.2 pts | −0.6 pts | −1.8 pts |
About as many homes sit empty in Islandia as nationally: 8.3%, against 9.6%.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 1974 | 1957 | 1956 | 1974 |
| 2010–14 | 1975 | 1958 | 1957 | 1975 |
| 2015–19 | 1972 | 1959 | 1958 | 1977 |
| 2020–24 | 1972 | 1962 | 1961 | 1980 |
| Change | −2 | +5 | +5 | +6 |
Housing in Islandia leans older: the median home dates to 1972, against 1980 nationally. Locally, though, homes here are newer than in the New York area overall, where the median home dates to 1962.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,798 | $1,268 | $1,095 | $965 |
| 2010–14 | $1,873 | $1,377 | $1,201 | $1,040 |
| 2015–19 | $1,914 | $1,645 | $1,426 | $1,213 |
| 2020–24 | $2,046 | $2,060 | $1,794 | $1,571 |
| Change | +$248 | +$792 | +$698 | +$606 |
Rent in Islandia runs $2,046 a month at the median, utilities included, well above the U.S. median of $1,571. That is in line with the rest of the New York area. Rent takes 30.0% of the typical renter's income, just under the 30% mark often used to define affordable rent.
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 Islandia
Bachelor's degrees in Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.2% | 35.0% | 31.9% | 28.4% |
| 2010–14 | 27.3% | 36.7% | 33.4% | 29.6% |
| 2015–19 | 23.3% | 39.9% | 36.2% | 32.1% |
| 2020–24 | 32.4% | 43.6% | 39.8% | 35.6% |
| Change | +4.2 pts | +8.6 pts | +8.0 pts | +7.2 pts |
College degrees are a little less common in Islandia than nationally: 32.4% of adults 25 and older have a bachelor's or higher, against 35.6%.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 93.1% | 83.7% | 84.0% | 84.9% |
| 2010–14 | 90.0% | 84.6% | 84.9% | 86.1% |
| 2015–19 | 88.1% | 86.2% | 86.5% | 87.7% |
| 2020–24 | 87.6% | 86.9% | 87.3% | 89.3% |
| Change | −5.5 pts | +3.3 pts | +3.3 pts | +4.3 pts |
About one in eight adults in Islandia never finished high school, a bit more than nationally: 87.6% have a diploma or equivalent, against 89.3% across the U.S. The New York area as a whole looks much the same.
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 Islandia
| Period | Islandia | New York area | New York | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.0% | 7.9% | 7.7% | 8.1% |
| 2010–14 | 4.7% | 9.5% | 9.2% | 9.4% |
| 2015–19 | 2.8% | 5.7% | 5.7% | 5.6% |
| 2020–24 | 5.5% | 6.9% | 6.6% | 5.4% |
| Change | −2.5 pts | −0.9 pts | −1.2 pts | −2.7 pts |
Unemployment in Islandia is close to the national rate: 5.5% of the labor force, against 5.4%. The rate is lower than in the New York area overall (6.9%). 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).
Islandia 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Islandia | 2.79 | 42.1 | 7.2% | 4.0% | 8.3% | 1972 | $2,046 | 32.4% | 87.6% | 5.5% |
| Central Islip | 4.58 | 35.3 | 18.5% | 20.1% | 9.8% | 1969 | $2,314 | 18.6% | 73.6% | 5.9% |
| Hauppauge | 3.11 | 43.9 | 8.4% | 15.9% | 5.6% | 1969 | $2,450 | 50.0% | 93.5% | 6.0% |
| Ronkonkoma | 3.13 | 39.3 | 8.6% | 18.2% | 6.9% | 1971 | $2,463 | 31.8% | 93.1% | 6.5% |
| North Great River | 3.28 | 45.6 | 3.8% | 12.6% | 3.5% | 1965 | $2,416 | 28.6% | 86.2% | 3.0% |
| Nesconset | 3.00 | 43.1 | 6.2% | 11.0% | 1.3% | 1977 | $2,334 | 53.2% | 95.3% | 2.6% |
| Village of the Branch | 3.29 | 47.0 | 1.5% | 1.5% | 8.7% | 1967 | $2,274 | 64.4% | 98.8% | 3.1% |
| Lake Ronkonkoma | 2.69 | 43.2 | 8.8% | 32.7% | 6.2% | 1971 | $2,207 | 28.8% | 93.6% | 6.0% |
| Islip Terrace | 3.16 | 42.2 | 7.0% | 10.5% | 5.4% | 1960 | $2,635 | 30.0% | 91.2% | 1.2% |
| Bohemia | 2.82 | 44.1 | 5.4% | 16.7% | 7.7% | 1970 | $2,671 | 41.3% | 95.1% | 3.0% |
| Smithtown | 2.94 | 45.9 | 4.7% | 13.8% | 4.0% | 1969 | $2,296 | 51.7% | 95.9% | 3.1% |
All figures 2020–24.
Cities with similar populations: Lake Katrine, NY · Arcola, IL · Oakland City, IN · Naples, ME · Laurel Lake, NJ · Lakemore, OH · Laguna Vista, TX · Lafayette, NY · Keedysville, MD · Hopkins, MI
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 Islandia. 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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