Population 10,908 · Census ACS 2020–24
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Population and households in St. Clair
Household size in St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.62 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.54 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.46 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.48 | 2.46 | 2.49 | 2.65 |
| Change | −0.14 | −0.06 | −0.00 | −0.03 |
The average household in St. Clair has 2.48 people, under the U.S. average of 2.65. The picture is much the same across the St. Louis area. Since 2006–10, household size has dropped from 2.62, 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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.9 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 41.6 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 37.9 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 37.8 | 40.8 | 40.1 | 40.1 |
| Change | +0.8 | +2.3 | +1.7 | +2.3 |
The median resident of St. Clair is 37.8 years old, a few years younger than the national median of 40.1. The median age has crept up from 36.9 in 2006–10, in line with the national trend. The youngest areas are in the northwest, the 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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.4% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 12.9% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 10.2% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 14.4% | 11.1% | 11.0% | 11.6% |
| Change | +3.9 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single-parent households are more common in St. Clair than nationally: 14.4%, against 11.6%. The single-parent share has risen 3.9 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 St. Clair
Renters in St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 32.5% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 26.5% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 30.5% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 29.7% | 29.6% | 31.9% | 34.8% |
| Change | −2.7 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Most households in St. Clair own their homes; 29.7% rent, a little below the national share of 34.8%. Among homeowners, 43.5% have no mortgage at all, above the national share of 39.8%. Renting is most common in the north and least common in the southwest. Since 2006–10, the renter share has fallen 2.7 points, 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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.1% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 15.6% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 13.2% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 10.2% | 8.8% | 10.5% | 9.6% |
| Change | −1.9 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Vacancy in St. Clair is close to the national rate: 10.2% of homes are empty, against 9.6%. Vacancy has fallen 1.9 points since 2006–10, in line with the national trend.
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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1979 | 1972 | 1974 | 1974 |
| 2010–14 | 1979 | 1972 | 1975 | 1975 |
| 2015–19 | 1979 | 1973 | 1976 | 1977 |
| 2020–24 | 1984 | 1975 | 1978 | 1980 |
| Change | +5 | +3 | +4 | +6 |
Homes in St. Clair are a bit newer than the national norm: the median home was built in 1984, versus 1980 across the U.S. The median year built has moved up from 1979 in 2006–10, a sign of steady new building. The newest homes are mostly in the southwest, the oldest in the center.
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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $627 | $825 | $740 | $965 |
| 2010–14 | $726 | $920 | $816 | $1,040 |
| 2015–19 | $738 | $1,010 | $899 | $1,213 |
| 2020–24 | $966 | $1,239 | $1,122 | $1,571 |
| Change | +$340 | +$414 | +$383 | +$606 |
A typical rental in St. Clair costs $966 a month with utilities, well below the national median of $1,571. Rent has climbed $340 a month since 2006–10, up 54%, a slower climb than the nation's. Rent takes 27.1% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the southeast; the most affordable are in the northeast.
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 St. Clair
Bachelor's degrees in St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.8% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 8.6% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 13.7% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 14.6% | 38.5% | 32.6% | 35.6% |
| Change | +5.8 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are relatively uncommon in St. Clair: 14.6% 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 5.8 points, mirroring the country. Only 15 of the 191 Missouri cities with 5,000+ people have a lower share of college graduates.
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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 77.5% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 78.5% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 83.6% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 84.8% | 93.6% | 91.8% | 89.3% |
| Change | +7.4 pts | +4.8 pts | +5.1 pts | +4.3 pts |
Just over one in seven adults in St. Clair never finished high school, more than nationally: 84.8% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma is up 7.4 points from 2006–10, mirroring the country. Only 12 of the 191 Missouri cities with 5,000+ people have a lower share of high school graduates.
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 St. Clair
| Period | St. Clair | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.3% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 11.8% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 6.0% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 7.0% | 4.3% | 4.1% | 5.4% |
| Change | −3.3 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Jobs have been harder to find in St. Clair than nationally: unemployment was 7.0%, against 5.4%. Of the 191 Missouri cities with 5,000+ people, only ten have higher unemployment. Unemployment is down 3.3 points from 2006–10, in line with the national trend.
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).
St. Clair 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| St. Clair | 2.48 | 37.8 | 14.4% | 29.7% | 10.2% | 1984 | $966 | 14.6% | 84.8% | 7.0% |
| Parkway | 2.28 | 45.6 | 4.6% | 23.8% | 4.5% | 1972 | $1,035 | 12.0% | 75.8% | 5.5% |
| Piney Park | 2.68 | 42.1 | 13.9% | 22.2% | 6.0% | 1983 | $1,236 | 15.5% | 96.3% | 9.1% |
| Mount Hope | 2.50 | 48.5 | 5.5% | 4.9% | 11.0% | 1990 | $965 | 17.5% | 85.2% | 2.7% |
| Neier | 2.30 | 51.4 | 8.3% | 0.2% | 17.5% | 1989 | $880 | 16.9% | 97.4% | 8.6% |
| Union | 2.59 | 36.9 | 13.0% | 29.5% | 10.0% | 1989 | $881 | 22.0% | 90.6% | 4.2% |
| Miramiguoa Park | 2.68 | 41.4 | 11.8% | 10.5% | 17.1% | 1983 | $931 | 30.6% | 93.1% | 0.0% |
| Lonedell | 2.42 | 51.3 | 10.0% | 4.6% | 11.8% | 1988 | $940 | 15.0% | 86.8% | 5.0% |
| Stanton | 2.39 | 45.2 | 8.9% | 9.7% | 14.0% | 1986 | $894 | 23.6% | 92.6% | 1.6% |
| Robertsville | 2.57 | 48.1 | 10.9% | 9.0% | 11.3% | 1988 | $929 | 15.1% | 90.2% | 3.4% |
| Villa Ridge | 2.61 | 40.1 | 17.5% | 9.6% | 7.6% | 1985 | $1,122 | 22.8% | 92.3% | 3.9% |
All figures 2020–24.
Cities with similar populations: Bonner Springs, KS · West Point, UT · West Olive, MI · West Haverstraw, NY · Wellford, SC · Brookhaven, PA · Bridgeton, MO · Briarcliff Manor, NY · Breinigsville, PA · Brazoria, TX
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 St. Clair. 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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