Population 1,480 · Census ACS 2020–24
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Population and households in South Troy
Household size in South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.04 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 3.20 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 3.20 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.86 | 2.46 | 2.49 | 2.65 |
| Change | −0.18 | −0.06 | −0.00 | −0.03 |
The typical household in South Troy holds 2.86 people, more than the U.S. average of 2.65. Since 2006–10, household size has dropped from 3.04, but in a place this small, much of that may be survey noise rather than real change.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 32.1 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 32.8 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 35.0 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 34.1 | 40.8 | 40.1 | 40.1 |
| Change | +1.9 | +2.3 | +1.7 | +2.3 |
With a median age of just 34.1, South Troy is far younger than the country as a whole (40.1), a population that tilts toward young families with children.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.5% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 9.1% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 15.7% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 24.4% | 11.1% | 11.0% | 11.6% |
| Change | +11.9 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single-parent households are common in South Troy: 24.4% of all households, against 11.6% 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 South Troy
Renters in South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.3% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 15.3% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 16.3% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 23.1% | 29.6% | 31.9% | 34.8% |
| Change | +12.8 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Only 23.1% of households in South Troy rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 19.6% have no mortgage at all, well below the national share of 39.8%.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.8% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 4.4% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 7.1% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 3.1% | 8.8% | 10.5% | 9.6% |
| Change | −4.7 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Empty homes are scarce in South Troy: just 3.1% sit vacant, compared with 9.6% nationally, a sign of a tight housing market.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2000 | 1972 | 1974 | 1974 |
| 2010–14 | 2000 | 1972 | 1975 | 1975 |
| 2015–19 | 2001 | 1973 | 1976 | 1977 |
| 2020–24 | 2006 | 1975 | 1978 | 1980 |
| Change | +6 | +3 | +4 | +6 |
Much of the housing in South Troy is relatively new: half of its homes were built after 2006, compared with 1980 for the U.S. as a whole.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $866 | $825 | $740 | $965 |
| 2010–14 | $929 | $920 | $816 | $1,040 |
| 2015–19 | $1,073 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,032 | $1,239 | $1,122 | $1,571 |
| Change | +$166 | +$414 | +$383 | +$606 |
The median renter in South Troy pays $1,032 a month for rent and utilities, well below the national median of $1,571. The typical renter here spends 23.4% 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 South Troy
Bachelor's degrees in South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.2% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 16.3% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 24.8% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 17.8% | 38.5% | 32.6% | 35.6% |
| Change | +3.5 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are relatively uncommon in South Troy: 17.8% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.5% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 86.3% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 92.2% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 95.5% | 93.6% | 91.8% | 89.3% |
| Change | +8.0 pts | +4.8 pts | +5.1 pts | +4.3 pts |
High school completion is high in South Troy: 95.5% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
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 South Troy
| Period | South Troy | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.4% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 10.0% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 3.5% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 10.0% | 4.3% | 4.1% | 5.4% |
| Change | +0.6 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Unemployment in South Troy runs well above the national rate: 10.0% of the labor force was out of work and looking, against 5.4%. 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).
South Troy compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| South Troy | 2.86 | 34.1 | 24.4% | 23.1% | 3.1% | 2006 | $1,032 | 17.8% | 95.5% | 10.0% |
| Troy | 2.71 | 39.1 | 12.5% | 23.0% | 4.5% | 1996 | $1,079 | 18.8% | 92.2% | 3.5% |
| Moscow Mills | 2.87 | 33.2 | 12.1% | 20.0% | 1.9% | 2006 | $1,135 | 23.7% | 91.9% | 3.7% |
| Chain of Rocks | 2.46 | 39.7 | 2.8% | 27.1% | 3.9% | 1992 | $800 | 17.8% | 91.2% | 3.9% |
| Cave | 3.41 | 37.3 | 16.4% | 3.1% | 10.0% | 1997 | $964 | 17.9% | 96.8% | 0.1% |
| Davis | 2.33 | 43.0 | 1.5% | 25.2% | 4.9% | 1992 | $610 | 18.1% | 93.2% | 4.1% |
| Wright City | 2.72 | 40.8 | 8.1% | 19.4% | 15.5% | 2001 | $1,244 | 24.9% | 88.5% | 5.2% |
| Hawk Point | 2.89 | 43.0 | 11.3% | 22.7% | 8.6% | 1994 | $941 | 12.7% | 91.2% | 4.2% |
| Foristell | 2.80 | 42.2 | 8.1% | 8.3% | 5.0% | 2004 | $1,544 | 32.6% | 96.1% | 2.3% |
| Flint Hill | 2.81 | 35.7 | 14.9% | 31.6% | 2.7% | 2006 | $1,427 | 38.0% | 92.7% | 4.2% |
| Truesdale | 2.41 | 45.2 | 11.8% | 34.1% | 11.5% | 2001 | $1,112 | 17.1% | 88.3% | 2.3% |
All figures 2020–24.
Cities with similar populations: Alstead, NH · Zilwaukee, MI · Woolwine, VA · Cherrylog, GA · Cerulean, KY · Brownton, MN · Brookside Village, TX · Bradbury, CA · Bel-Nor, MO · Boonville, CA
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 South 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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