Union, MO Demographics

Population 19,209 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Union, MO map of median age by neighborhood
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Population and households in Union

Household size in Union

Household size, people per household
PeriodUnionSt. Louis areaMissouriU.S.
2006–102.642.522.492.68
2010–142.602.532.522.73
2015–192.682.492.502.71
2020–242.592.462.492.65
Change−0.05−0.06−0.00−0.03
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At 2.59 people per household, Union sits close to the national average of 2.65. The typical household here is bigger than in the wider St. Louis area, where it has 2.46 people. Since 2006–10, household size has edged down from 2.64, as it has 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 Union

Median age, years
PeriodUnionSt. Louis areaMissouriU.S.
2006–1035.238.538.437.7
2010–1437.239.539.238.6
2015–1936.540.740.039.6
2020–2436.940.840.140.1
Change+1.7+2.3+1.7+2.3
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The median resident of Union is 36.9 years old, a few years younger than the national median of 40.1. Since 2006–10, the median age has climbed from 35.2, as it has nationally. Residents skew youngest in the southeast and oldest in the southwest.

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 Union

Single-parent households, % of households
PeriodUnionSt. Louis areaMissouriU.S.
2006–1012.0%11.7%11.3%12.3%
2010–146.5%11.5%11.4%12.3%
2015–1914.7%11.0%10.9%11.6%
2020–2413.0%11.1%11.0%11.6%
Change+1.0 pts−0.6 pts−0.3 pts−0.6 pts
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Single parents head about one in eight households in Union (13.0%), a bit above the national share of 11.6%. The single-parent share has edged up 1.0 points since 2006–10, even as the national share fell.

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 Union

Renters in Union

Renters, % of occupied homes
PeriodUnionSt. Louis areaMissouriU.S.
2006–1024.4%28.3%30.0%33.3%
2010–1426.8%30.1%32.1%35.6%
2015–1930.2%31.1%33.2%36.0%
2020–2429.5%29.6%31.9%34.8%
Change+5.1 pts+1.4 pts+1.9 pts+1.5 pts
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About three in ten households in Union rent their homes (29.5%), a little below the national share of 34.8%; the rest own. About four in ten owners (39.4%) have paid off their mortgages, about the same as nationally. Rentals cluster in the north; owners are most common in the southwest. The renter share has risen 5.1 points since 2006–10, a much bigger shift than 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 Union

Vacant homes, % of all homes
PeriodUnionSt. Louis areaMissouriU.S.
2006–1010.0%9.6%11.6%11.4%
2010–147.4%10.1%12.0%11.4%
2015–196.2%10.1%12.2%11.1%
2020–2410.0%8.8%10.5%9.6%
Change+0.0 pts−0.8 pts−1.1 pts−1.8 pts
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About as many homes sit empty in Union as nationally: 10.0%, against 9.6%. Vacancy has barely moved since 2006–10, while 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 Union

Age of homes, median year built
PeriodUnionSt. Louis areaMissouriU.S.
2006–101983197219741974
2010–141982197219751975
2015–191988197319761977
2020–241989197519781980
Change+6+3+4+6
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Union has newer housing than the country as a whole: the median home was built in 1989, versus 1980 nationally. The median year built has moved up from 1983 in 2006–10, a sign of steady new building. The newest homes are mostly in the southeast, the oldest in the west.

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 Union

Rent, per month
PeriodUnionSt. Louis areaMissouriU.S.
2006–10$697$825$740$965
2010–14$701$920$816$1,040
2015–19$748$1,010$899$1,213
2020–24$881$1,239$1,122$1,571
Change+$183+$414+$383+$606
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Rent in Union runs $881 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $183 a month from 2006–10, a 26% rise, a slower climb than the nation's. The typical renter here spends 20.3% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.

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 Union

Bachelor's degrees in Union

Bachelor's degrees, % of adults 25+
PeriodUnionSt. Louis areaMissouriU.S.
2006–1018.3%30.3%26.0%28.4%
2010–1422.1%32.1%27.3%29.6%
2015–1920.6%34.9%29.6%32.1%
2020–2422.0%38.5%32.6%35.6%
Change+3.8 pts+8.3 pts+6.6 pts+7.2 pts
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College degrees are relatively uncommon in Union: 22.0% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. Since 2006–10, the share with a degree has risen 3.8 points, 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 Union

High school graduates, % of adults 25+
PeriodUnionSt. Louis areaMissouriU.S.
2006–1085.5%88.8%86.8%84.9%
2010–1489.6%90.5%88.3%86.1%
2015–1988.4%92.1%90.0%87.7%
2020–2490.6%93.6%91.8%89.3%
Change+5.2 pts+4.8 pts+5.1 pts+4.3 pts
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High school completion in Union is close to the national rate: 90.6% of adults have a diploma or equivalent, against 89.3%. The rate is lower than in the St. Louis area as a whole (93.6%). The share with a diploma has risen 5.2 points since 2006–10, in line with the national trend.

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 Union

Unemployment, % of the labor force
PeriodUnionSt. Louis areaMissouriU.S.
2006–106.8%7.7%7.4%8.1%
2010–148.4%8.8%8.4%9.4%
2015–193.6%4.9%4.6%5.6%
2020–244.2%4.3%4.1%5.4%
Change−2.6 pts−3.4 pts−3.3 pts−2.7 pts
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Unemployment in Union runs below the national rate: 4.2% of the labor force was out of work and looking, against 5.4% nationally. Since 2006–10, unemployment has fallen 2.6 points, mirroring the country. 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).

Union compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Union2.5936.913.0%29.5%10.0%1989$88122.0%90.6%4.2%
Villa Ridge2.6140.117.5%9.6%7.6%1985$1,12222.8%92.3%3.9%
Neier2.3051.48.3%0.2%17.5%1989$88016.9%97.4%8.6%
Washington2.3444.17.7%24.2%4.4%1979$95231.5%94.4%4.3%
St. Clair2.4837.814.4%29.7%10.2%1984$96614.6%84.8%7.0%
Parkway2.2845.64.6%23.8%4.5%1972$1,03512.0%75.8%5.5%
Beaufort2.6144.64.1%4.5%12.3%1985$87125.4%96.3%5.1%
Labadie2.5843.07.4%11.4%3.6%1993$1,14036.8%90.8%5.7%
Lyon2.9037.91.1%2.4%11.0%1991$81231.2%95.6%0.8%
Piney Park2.6842.113.9%22.2%6.0%1983$1,23615.5%96.3%9.1%
Robertsville2.5748.110.9%9.0%11.3%1988$92915.1%90.2%3.4%

All figures 2020–24.

Cities with similar populations: Lakeway, TX · Red Hill, SC · Ludlow, MA · Long Beach, MS · London, OH · Lincoln, RI · Lewistown, PA · Lebanon, IN · Lawrenceburg, TN · Red Wing, MN

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 Union. 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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