Holtsville, NY Demographics

Population 12,510 · Census ACS 2020–24

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

Household size in Holtsville

Household size, people per household
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–103.072.792.682.68
2010–143.022.852.722.73
2015–192.992.822.692.71
2020–243.022.792.652.65
Change−0.05−0.00−0.03−0.03
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Holtsville is a place of big households: 3.02 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Since 2006–10, household size has edged down from 3.07, mirroring the country.

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 Holtsville

Median age, years
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–1036.238.038.337.7
2010–1439.938.739.038.6
2015–1943.139.840.239.6
2020–2438.340.440.840.1
Change+2.1+2.4+2.5+2.3
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The median resident of Holtsville is 38.3 years old, a few years younger than the national median of 40.1. Since 2006–10, the median age has climbed from 36.2, as it has nationally. Holtsville is younger than the great majority of New York cities.

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 Holtsville

Single-parent households, % of households
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–1010.2%13.1%13.1%12.3%
2010–148.2%12.8%12.7%12.3%
2015–197.7%11.4%11.6%11.6%
2020–2410.6%11.6%11.6%11.6%
Change+0.4 pts−1.5 pts−1.5 pts−0.6 pts
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Single parents head about one in ten households in Holtsville (10.6%), a little below the national share of 11.6%. Compared with other New York cities, though, Holtsville has a higher share of single-parent households than most.

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 Holtsville

Renters in Holtsville

Renters, % of occupied homes
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–1018.1%47.1%44.8%33.3%
2010–1419.6%48.7%46.2%35.6%
2015–1920.4%48.8%46.2%36.0%
2020–2417.5%48.6%45.7%34.8%
Change−0.6 pts+1.5 pts+0.9 pts+1.5 pts
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Only 17.5% of households in Holtsville rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Nearly three in ten owners (28.3%) have paid off their mortgages, well below the national share of 39.8%. Renting is most common in the center and least common in the northwest. The renter share is down 0.6 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 Holtsville

Vacant homes, % of all homes
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–107.4%9.1%10.3%11.4%
2010–146.4%9.0%10.4%11.4%
2015–195.3%9.1%11.0%11.1%
2020–242.5%7.9%9.7%9.6%
Change−4.9 pts−1.2 pts−0.6 pts−1.8 pts
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Empty homes are scarce in Holtsville: just 2.5% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Vacancy is down 4.9 points from 2006–10, as it has nationally. Only 12 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 Holtsville

Age of homes, median year built
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–101980195719561974
2010–141980195819571975
2015–191979195919581977
2020–241980196219611980
Change−0+5+5+6
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Homes in Holtsville are the same age as the nation's housing: the median home was built in 1980. Homes here are newer than in the wider New York area, where the median home dates to 1962. The newest homes are mostly in the southeast, the oldest in the northwest.

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 Holtsville

Rent, per month
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–10$1,430$1,268$1,095$965
2010–14$1,582$1,377$1,201$1,040
2015–19$1,504$1,645$1,426$1,213
2020–24$2,136$2,060$1,794$1,571
Change+$706+$792+$698+$606
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Rent in Holtsville runs $2,136 a month at the median, utilities included, well above the U.S. median of $1,571. Rents are up $706 a month from 2006–10, a 49% rise, a slower climb than the nation's. The typical renter here spends 34.9% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Renters on a budget will find the lowest rents in the northeast; the highest 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 Holtsville

Bachelor's degrees in Holtsville

Bachelor's degrees, % of adults 25+
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–1026.5%35.0%31.9%28.4%
2010–1430.0%36.7%33.4%29.6%
2015–1931.9%39.9%36.2%32.1%
2020–2436.0%43.6%39.8%35.6%
Change+9.4 pts+8.6 pts+8.0 pts+7.2 pts
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More than a third of adults 25 and older in Holtsville (36.0%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is lower than in the wider New York area (43.6%). The share with a degree has risen 9.4 points since 2006–10, in line with the national trend.

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 Holtsville

High school graduates, % of adults 25+
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–1092.4%83.7%84.0%84.9%
2010–1494.4%84.6%84.9%86.1%
2015–1993.4%86.2%86.5%87.7%
2020–2489.9%86.9%87.3%89.3%
Change−2.5 pts+3.3 pts+3.3 pts+4.3 pts
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High school completion in Holtsville is close to the national rate: 89.9% of adults have a diploma or equivalent, against 89.3%. The rate is higher than in the wider New York area (86.9%). Since 2006–10, the share with a diploma has fallen 2.5 points, 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 Holtsville

Unemployment, % of the labor force
PeriodHoltsvilleNew York areaNew YorkU.S.
2006–104.7%7.9%7.7%8.1%
2010–145.5%9.5%9.2%9.4%
2015–194.3%5.7%5.7%5.6%
2020–243.0%6.9%6.6%5.4%
Change−1.7 pts−0.9 pts−1.2 pts−2.7 pts
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Unemployment in Holtsville has been low: just 3.0% of the labor force was out of work and looking, well below the national rate of 5.4%. Unemployment is down 1.7 points from 2006–10, mirroring the country. 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).

Holtsville compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Holtsville3.0238.310.6%17.5%2.5%1980$2,13636.0%89.9%3.0%
Holbrook2.9941.47.4%20.9%4.5%1975$2,33335.1%92.6%4.9%
Farmingville3.5934.013.6%19.1%8.4%1973$2,56332.7%89.0%3.9%
North Patchogue2.9038.412.1%9.3%6.6%1966$2,24832.6%94.4%4.2%
Medford3.2738.511.3%11.6%7.8%1975$2,70528.1%87.3%5.5%
Patchogue2.3938.88.1%44.0%8.3%1966$2,33737.0%90.0%3.4%
Lake Ronkonkoma2.6943.28.8%32.7%6.2%1971$2,20728.8%93.6%6.0%
Blue Point2.3149.25.9%10.8%5.2%1972$2,45556.5%97.8%5.4%
East Patchogue2.6443.66.8%26.3%6.4%1968$2,22334.9%88.9%4.8%
Selden3.1339.58.7%18.3%6.6%1970$2,53529.3%91.5%4.0%
Ronkonkoma3.1339.38.6%18.2%6.9%1971$2,46331.8%93.1%6.5%

All figures 2020–24.

Cities with similar populations: Largo, MD · Rocky Point, NC · Rockwood, TN · Rockwood, MI · Rockwell, NC · Rockton, IL · Rochester, IN · River Forest, IL · Ringwood, NJ · Ridgefield, NJ

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 Holtsville. 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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