Troy, MO Demographics

Population 23,163 · Census ACS 2020–24

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

Household size in Troy

Household size, people per household
PeriodTroySt. Louis areaMissouriU.S.
2006–102.782.522.492.68
2010–142.832.532.522.73
2015–192.872.492.502.71
2020–242.712.462.492.65
Change−0.07−0.06−0.00−0.03
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Households in Troy average 2.71 people, about the same as the country as a whole (2.65). The typical household here is bigger than in the St. Louis area as a whole, where it has 2.46 people. Since 2006–10, household size has edged down from 2.78, 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 Troy

Median age, years
PeriodTroySt. Louis areaMissouriU.S.
2006–1035.938.538.437.7
2010–1436.139.539.238.6
2015–1936.140.740.039.6
2020–2439.140.840.140.1
Change+3.3+2.3+1.7+2.3
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At 39.1, the median age in Troy is close to the national median of 40.1, so its age mix looks much like the country's. The population here is younger than in the St. Louis area overall, where the median age is 40.8. The median age has climbed from 35.9 in 2006–10, in line with the national trend.

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 Troy

Single-parent households, % of households
PeriodTroySt. Louis areaMissouriU.S.
2006–1012.2%11.7%11.3%12.3%
2010–1413.2%11.5%11.4%12.3%
2015–1912.7%11.0%10.9%11.6%
2020–2412.5%11.1%11.0%11.6%
Change+0.3 pts−0.6 pts−0.3 pts−0.6 pts
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Single-parent households are about as common in Troy as they are nationally: 12.5%, against 11.6%. Single parents are more common here than in the wider St. Louis area (11.1%).

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 Troy

Renters in Troy

Renters, % of occupied homes
PeriodTroySt. Louis areaMissouriU.S.
2006–1022.3%28.3%30.0%33.3%
2010–1426.2%30.1%32.1%35.6%
2015–1925.1%31.1%33.2%36.0%
2020–2423.0%29.6%31.9%34.8%
Change+0.7 pts+1.4 pts+1.9 pts+1.5 pts
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Only 23.0% of households in Troy rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 31.5% have no mortgage at all, below the national share of 39.8%. Rentals cluster in the center; owners are most common in the northeast. The renter share is up 0.7 points from 2006–10, mirroring the country.

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 Troy

Vacant homes, % of all homes
PeriodTroySt. Louis areaMissouriU.S.
2006–106.0%9.6%11.6%11.4%
2010–149.2%10.1%12.0%11.4%
2015–1911.5%10.1%12.2%11.1%
2020–244.5%8.8%10.5%9.6%
Change−1.6 pts−0.8 pts−1.1 pts−1.8 pts
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Only 4.5% of homes in Troy are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Since 2006–10, vacancy has fallen 1.6 points, as it has nationally. Troy has a lower vacancy rate than the great majority of Missouri cities.

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 Troy

Age of homes, median year built
PeriodTroySt. Louis areaMissouriU.S.
2006–101992197219741974
2010–141994197219751975
2015–191991197319761977
2020–241996197519781980
Change+4+3+4+6
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Much of the housing in Troy is relatively new: half of its homes were built after 1996, compared with 1980 for the U.S. as a whole. The median year built has moved up from 1992 in 2006–10, a sign of steady new building. Newer construction is concentrated in the west, 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 Troy

Rent, per month
PeriodTroySt. Louis areaMissouriU.S.
2006–10$714$825$740$965
2010–14$833$920$816$1,040
2015–19$869$1,010$899$1,213
2020–24$1,079$1,239$1,122$1,571
Change+$365+$414+$383+$606
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The median renter in Troy pays $1,079 a month for rent and utilities, well below the national median of $1,571. Rents are up $365 a month from 2006–10, a 51% rise, a slower climb than the nation's. The typical renter here spends 27.7% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Renters on a budget will find the lowest rents in the north; the highest are in the east.

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 Troy

Bachelor's degrees in Troy

Bachelor's degrees, % of adults 25+
PeriodTroySt. Louis areaMissouriU.S.
2006–1014.1%30.3%26.0%28.4%
2010–1416.1%32.1%27.3%29.6%
2015–1919.3%34.9%29.6%32.1%
2020–2418.8%38.5%32.6%35.6%
Change+4.7 pts+8.3 pts+6.6 pts+7.2 pts
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College degrees are relatively uncommon in Troy: 18.8% 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 4.7 points, mirroring the country. College graduates are most concentrated in the west 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 Troy

High school graduates, % of adults 25+
PeriodTroySt. Louis areaMissouriU.S.
2006–1085.8%88.8%86.8%84.9%
2010–1487.2%90.5%88.3%86.1%
2015–1991.2%92.1%90.0%87.7%
2020–2492.2%93.6%91.8%89.3%
Change+6.4 pts+4.8 pts+5.1 pts+4.3 pts
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About nine in ten adults in Troy have finished high school (92.2%), a bit above the national rate of 89.3%. That is in line with the rest of the St. Louis area. Since 2006–10, the share with a diploma has risen 6.4 points, mirroring the country.

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 Troy

Unemployment, % of the labor force
PeriodTroySt. Louis areaMissouriU.S.
2006–109.6%7.7%7.4%8.1%
2010–1410.5%8.8%8.4%9.4%
2015–193.4%4.9%4.6%5.6%
2020–243.5%4.3%4.1%5.4%
Change−6.1 pts−3.4 pts−3.3 pts−2.7 pts
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Jobs have been easier to find in Troy than nationally: unemployment was 3.5%, against 5.4%. Since 2006–10, unemployment has fallen 6.1 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).

Troy compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Troy2.7139.112.5%23.0%4.5%1996$1,07918.8%92.2%3.5%
Chain of Rocks2.4639.72.8%27.1%3.9%1992$80017.8%91.2%3.9%
South Troy2.8634.124.4%23.1%3.1%2006$1,03217.8%95.5%10.0%
Cave3.4137.316.4%3.1%10.0%1997$96417.9%96.8%0.1%
Davis2.3343.01.5%25.2%4.9%1992$61018.1%93.2%4.1%
Moscow Mills2.8733.212.1%20.0%1.9%2006$1,13523.7%91.9%3.7%
Okete2.5049.512.0%12.2%6.4%1991$82720.1%92.4%3.3%
Hawk Point2.8943.011.3%22.7%8.6%1994$94112.7%91.2%4.2%
Winfield3.0338.215.7%20.9%2.9%1998$98016.1%83.5%3.0%
Old Monroe2.8138.59.0%21.0%1.1%1994$1,20820.3%89.3%2.0%
Millwood2.4250.82.4%2.8%2.8%2001$83129.6%88.5%0.3%

All figures 2020–24.

Cities with similar populations: Seffner, FL · Leesburg, GA · Lexington Park, MD · Liberal, KS · Lino Lakes, MN · Lomita, CA · Ridgefield, WA · Rotterdam, NY · Round Lake, IL · Salem, OH

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 Troy. 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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