Thornwood, NY Demographics

Population 5,340 · Census ACS 2020–24

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

Household size in Thornwood

Household size, people per household
PeriodThornwoodNew York areaNew YorkU.S.
2006–103.082.792.682.68
2010–143.272.852.722.73
2015–193.042.822.692.71
2020–242.892.792.652.65
Change−0.19−0.00−0.03−0.03
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The typical household in Thornwood holds 2.89 people, more than the U.S. average of 2.65. Since 2006–10, household size has dropped from 3.08, a much bigger shift than nationally.

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 Thornwood

Median age, years
PeriodThornwoodNew York areaNew YorkU.S.
2006–1039.538.038.337.7
2010–1438.438.739.038.6
2015–1940.739.840.239.6
2020–2443.740.440.840.1
Change+4.3+2.4+2.5+2.3
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Thornwood skews older than the country: its median age is 43.7, against 40.1 nationally. Since 2006–10, the median age has climbed from 39.5, in line with the national trend. Residents skew youngest in the center and oldest in the southeast.

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 Thornwood

Single-parent households, % of households
PeriodThornwoodNew York areaNew YorkU.S.
2006–108.6%13.1%13.1%12.3%
2010–146.0%12.8%12.7%12.3%
2015–196.8%11.4%11.6%11.6%
2020–242.8%11.6%11.6%11.6%
Change−5.8 pts−1.5 pts−1.5 pts−0.6 pts
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Single-parent households are relatively rare in Thornwood: 2.8% of households, against 11.6% nationally. The single-parent share is down 5.8 points from 2006–10, a much bigger shift than nationally. Only 11 of the 488 New York cities with 5,000+ people have a lower share of single-parent households.

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 Thornwood

Renters in Thornwood

Renters, % of occupied homes
PeriodThornwoodNew York areaNew YorkU.S.
2006–1019.0%47.1%44.8%33.3%
2010–1422.8%48.7%46.2%35.6%
2015–1917.5%48.8%46.2%36.0%
2020–2410.3%48.6%45.7%34.8%
Change−8.7 pts+1.5 pts+0.9 pts+1.5 pts
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Only 10.3% of households in Thornwood rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About four in ten owners (40.3%) have paid off their mortgages, about the same as nationally. Renting is most common in the northeast and least common in the southeast. The renter share is down 8.7 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 Thornwood

Vacant homes, % of all homes
PeriodThornwoodNew York areaNew YorkU.S.
2006–105.0%9.1%10.3%11.4%
2010–144.1%9.0%10.4%11.4%
2015–194.7%9.1%11.0%11.1%
2020–245.6%7.9%9.7%9.6%
Change+0.6 pts−1.2 pts−0.6 pts−1.8 pts
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Empty homes are scarce in Thornwood: just 5.6% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. Vacancy has edged up 0.6 points since 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 Thornwood

Age of homes, median year built
PeriodThornwoodNew York areaNew YorkU.S.
2006–101956195719561974
2010–141957195819571975
2015–191958195919581977
2020–241961196219611980
Change+4+5+5+6
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Thornwood 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 median year built has moved up from 1956 in 2006–10, a sign of steady new building.

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 Thornwood

Rent, per month
PeriodThornwoodNew York areaNew YorkU.S.
2006–10$1,679$1,268$1,095$965
2010–14$1,657$1,377$1,201$1,040
2015–19$1,950$1,645$1,426$1,213
2020–24$2,601$2,060$1,794$1,571
Change+$922+$792+$698+$606
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The median renter in Thornwood pays $2,601 a month for rent and utilities, well above the national median of $1,571. Rents are up $922 a month from 2006–10, a 55% rise, a slower climb than the nation's. The typical renter here spends 34.7% of household income on rent, 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 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 Thornwood

Bachelor's degrees in Thornwood

Bachelor's degrees, % of adults 25+
PeriodThornwoodNew York areaNew YorkU.S.
2006–1038.3%35.0%31.9%28.4%
2010–1445.4%36.7%33.4%29.6%
2015–1953.9%39.9%36.2%32.1%
2020–2452.8%43.6%39.8%35.6%
Change+14.5 pts+8.6 pts+8.0 pts+7.2 pts
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Thornwood is highly educated: just over half of adults 25 and older (52.8%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 14.5 points from 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 Thornwood

High school graduates, % of adults 25+
PeriodThornwoodNew York areaNew YorkU.S.
2006–1093.6%83.7%84.0%84.9%
2010–1495.3%84.6%84.9%86.1%
2015–1991.9%86.2%86.5%87.7%
2020–2493.1%86.9%87.3%89.3%
Change−0.6 pts+3.3 pts+3.3 pts+4.3 pts
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High school completion in Thornwood is above the national rate: 93.1% of adults have a diploma, against 89.3%. The share with a diploma is down 0.6 points from 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 Thornwood

Unemployment, % of the labor force
PeriodThornwoodNew York areaNew YorkU.S.
2006–104.5%7.9%7.7%8.1%
2010–145.2%9.5%9.2%9.4%
2015–192.8%5.7%5.7%5.6%
2020–242.9%6.9%6.6%5.4%
Change−1.6 pts−0.9 pts−1.2 pts−2.7 pts
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Unemployment in Thornwood has been low: just 2.9% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 1.6 points, 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).

Thornwood compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Thornwood2.8943.72.8%10.3%5.6%1961$2,60152.8%93.1%2.9%
Pleasantville2.9036.46.1%19.1%5.9%1959$2,44874.1%95.4%7.5%
Hawthorne2.9344.11.6%12.5%4.8%1955$3,29558.9%95.1%10.2%
Valhalla2.6745.45.0%22.6%7.4%1960$2,55749.6%90.2%6.2%
Pocantico Hills2.4455.41.0%33.9%1.6%1985$3,50163.6%95.0%4.6%
Briarcliff Manor2.7846.33.9%15.6%4.2%1973$2,99974.4%95.2%4.7%
Chappaqua2.9842.14.8%13.1%7.7%1960$2,89084.1%98.3%5.4%
Armonk3.0144.14.3%8.8%7.8%1981$3,22979.7%97.6%2.6%
Elmsford3.2335.216.9%35.8%11.9%1967$2,55246.2%89.1%6.1%
Sleepy Hollow2.6541.113.9%66.9%3.7%1951$2,14741.4%74.9%5.4%
Ossining2.8443.511.5%40.0%5.2%1958$2,35843.0%83.3%5.4%

All figures 2020–24.

Cities with similar populations: Mingo Junction, OH · Morganton, GA · Morganfield, KY · Moose Lake, MN · Moon Lake, FL · Moody, TX · Montverde, FL · Montello, WI · Montebello, PR · Montebello, NY

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 Thornwood. 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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