Selden, NY Demographics

Population 26,159 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Selden, NY map of median age by neighborhood
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Population and households in Selden

Household size in Selden

Household size, people per household
PeriodSeldenNew York areaNew YorkU.S.
2006–102.982.792.682.68
2010–143.192.852.722.73
2015–193.282.822.692.71
2020–243.132.792.652.65
Change+0.14−0.00−0.03−0.03
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Households in Selden are large by national standards, averaging 3.13 people against 2.65 for the U.S. That usually means more families with children at home. Household size has climbed from 2.98 in 2006–10, even as the national average fell.

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 Selden

Median age, years
PeriodSeldenNew York areaNew YorkU.S.
2006–1035.638.038.337.7
2010–1437.238.739.038.6
2015–1938.839.840.239.6
2020–2439.540.440.840.1
Change+3.9+2.4+2.5+2.3
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At 39.5, the median age in Selden is close to the national median of 40.1, so its age mix looks much like the country's. Since 2006–10, the median age has climbed from 35.6, as it has 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 Selden

Single-parent households, % of households
PeriodSeldenNew York areaNew YorkU.S.
2006–1012.0%13.1%13.1%12.3%
2010–1411.4%12.8%12.7%12.3%
2015–1911.2%11.4%11.6%11.6%
2020–248.7%11.6%11.6%11.6%
Change−3.3 pts−1.5 pts−1.5 pts−0.6 pts
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Single-parent households are less common in Selden than nationally: 8.7%, against 11.6%. 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 Selden

Renters in Selden

Renters, % of occupied homes
PeriodSeldenNew York areaNew YorkU.S.
2006–1017.6%47.1%44.8%33.3%
2010–1419.2%48.7%46.2%35.6%
2015–1916.8%48.8%46.2%36.0%
2020–2418.3%48.6%45.7%34.8%
Change+0.7 pts+1.5 pts+0.9 pts+1.5 pts
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Only 18.3% of households in Selden rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 26.0% have no mortgage at all, well below the national share of 39.8%. Rentals cluster in the south; owners are most common in the northwest. The renter share is up 0.7 points from 2006–10, as it has nationally.

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 Selden

Vacant homes, % of all homes
PeriodSeldenNew York areaNew YorkU.S.
2006–105.0%9.1%10.3%11.4%
2010–146.4%9.0%10.4%11.4%
2015–198.2%9.1%11.0%11.1%
2020–246.6%7.9%9.7%9.6%
Change+1.6 pts−1.2 pts−0.6 pts−1.8 pts
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Fewer homes sit empty in Selden than nationally: 6.6%, against 9.6% for the U.S. The picture is much the same across the New York area. Vacancy is up 1.6 points from 2006–10, 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 Selden

Age of homes, median year built
PeriodSeldenNew York areaNew YorkU.S.
2006–101969195719561974
2010–141969195819571975
2015–191970195919581977
2020–241970196219611980
Change+0+5+5+6
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Selden is a place of older homes: half were built before 1970, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. Locally, though, homes here are newer than in the New York area overall, where the median home dates to 1962. Newer construction is concentrated in the east, while the center has the oldest housing.

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 Selden

Rent, per month
PeriodSeldenNew York areaNew YorkU.S.
2006–10$1,391$1,268$1,095$965
2010–14$1,450$1,377$1,201$1,040
2015–19$1,956$1,645$1,426$1,213
2020–24$2,535$2,060$1,794$1,571
Change+$1,144+$792+$698+$606
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Rent in Selden runs $2,535 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, an 82% jump, faster than rents rose nationally. Rent takes 36.6% 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 west and lowest in the center.

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 Selden

Bachelor's degrees in Selden

Bachelor's degrees, % of adults 25+
PeriodSeldenNew York areaNew YorkU.S.
2006–1022.8%35.0%31.9%28.4%
2010–1425.9%36.7%33.4%29.6%
2015–1927.7%39.9%36.2%32.1%
2020–2429.3%43.6%39.8%35.6%
Change+6.5 pts+8.6 pts+8.0 pts+7.2 pts
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College degrees are a little less common in Selden than nationally: 29.3% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree is up 6.5 points from 2006–10, in line with the national trend. College graduates are most concentrated in the southwest and least in the center.

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 Selden

High school graduates, % of adults 25+
PeriodSeldenNew York areaNew YorkU.S.
2006–1089.9%83.7%84.0%84.9%
2010–1490.6%84.6%84.9%86.1%
2015–1992.2%86.2%86.5%87.7%
2020–2491.5%86.9%87.3%89.3%
Change+1.6 pts+3.3 pts+3.3 pts+4.3 pts
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High school completion in Selden is a bit above the national rate: 91.5% of adults have a diploma or equivalent, against 89.3%. The share with a diploma is up 1.6 points from 2006–10, mirroring the country. Compared with other New York cities, though, Selden has a lower share of high school graduates than most.

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 Selden

Unemployment, % of the labor force
PeriodSeldenNew York areaNew YorkU.S.
2006–105.3%7.9%7.7%8.1%
2010–146.1%9.5%9.2%9.4%
2015–194.1%5.7%5.7%5.6%
2020–244.0%6.9%6.6%5.4%
Change−1.3 pts−0.9 pts−1.2 pts−2.7 pts
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Unemployment in Selden runs below the national rate: 4.0% of the labor force was out of work and looking, against 5.4% nationally. Since 2006–10, unemployment has edged down 1.3 points, as it has nationally. 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).

Selden compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Selden3.1339.58.7%18.3%6.6%1970$2,53529.3%91.5%4.0%
Centereach3.3139.38.8%12.6%7.7%1970$2,41936.4%92.5%5.6%
Farmingville3.5934.013.6%19.1%8.4%1973$2,56332.7%89.0%3.9%
Coram2.6043.98.7%32.3%8.4%1982$2,45734.7%90.9%4.9%
Terryville2.8739.25.4%25.2%10.9%1971$2,97729.9%89.3%6.1%
Port Jefferson Station2.7942.56.4%21.2%8.4%1976$2,40040.3%92.0%3.8%
Lake Grove3.0041.89.4%21.9%2.7%1971$1,82144.4%94.9%5.3%
Holtsville3.0238.310.6%17.5%2.5%1980$2,13636.0%89.9%3.0%
Stony Brook University2.8228.92.3%9.5%8.5%1965$3,50140.0%90.3%0.0%
Medford3.2738.511.3%11.6%7.8%1975$2,70528.1%87.3%5.5%
Mount Sinai2.8448.72.3%7.6%6.5%1987$2,65651.4%95.2%2.3%

All figures 2020–24.

Cities with similar populations: Parlin, NJ · Maywood, CA · McKeesport, PA · Meadville, PA · Medford, NJ · Mequon, WI · Mercer Island, WA · Milford Mill, MD · Mocksville, NC · Onalaska, WI

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 Selden. 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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