Population 1,019 · Census ACS 2020–24
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Population and households in St. Mary
Household size in St. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 2.42 | 2.49 | 2.68 |
| 2010–14 | 2.67 | 2.52 | 2.73 |
| 2015–19 | 2.60 | 2.50 | 2.71 |
| 2020–24 | 2.70 | 2.49 | 2.65 |
| Change | +0.28 | −0.00 | −0.03 |
Households in St. Mary average 2.70 people, about the same as the country as a whole (2.65). The typical household here is bigger than in Missouri overall, where it has 2.49 people. Household size has climbed from 2.42 in 2006–10, 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 St. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 43.8 | 38.4 | 37.7 |
| 2010–14 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 46.0 | 40.0 | 39.6 |
| 2020–24 | 46.1 | 40.1 | 40.1 |
| Change | +2.3 | +1.7 | +2.3 |
St. Mary skews older: half of its residents are older than 46.1, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 6.1% | 11.3% | 12.3% |
| 2010–14 | 7.6% | 11.4% | 12.3% |
| 2015–19 | 6.5% | 10.9% | 11.6% |
| 2020–24 | 8.6% | 11.0% | 11.6% |
| Change | +2.6 pts | −0.3 pts | −0.6 pts |
Single-parent households are relatively rare in St. Mary: 8.6% of 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 St. Mary
Renters in St. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 14.6% | 30.0% | 33.3% |
| 2010–14 | 19.2% | 32.1% | 35.6% |
| 2015–19 | 7.8% | 33.2% | 36.0% |
| 2020–24 | 18.9% | 31.9% | 34.8% |
| Change | +4.3 pts | +1.9 pts | +1.5 pts |
St. Mary is largely a place of homeowners: only 18.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 59.1% have no mortgage at all, well above 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 St. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 13.3% | 11.6% | 11.4% |
| 2010–14 | 16.1% | 12.0% | 11.4% |
| 2015–19 | 26.3% | 12.2% | 11.1% |
| 2020–24 | 22.0% | 10.5% | 9.6% |
| Change | +8.6 pts | −1.1 pts | −1.8 pts |
Vacancy is high in St. Mary: 22.0% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
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. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 1980 | 1974 | 1974 |
| 2010–14 | 1976 | 1975 | 1975 |
| 2015–19 | 1980 | 1976 | 1977 |
| 2020–24 | 1979 | 1978 | 1980 |
| Change | −1 | +4 | +6 |
Homes in St. Mary are about the same age as the nation's housing: the median home was built in 1979, versus 1980 nationally.
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. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | $581 | $740 | $965 |
| 2010–14 | $709 | $816 | $1,040 |
| 2015–19 | $728 | $899 | $1,213 |
| 2020–24 | $935 | $1,122 | $1,571 |
| Change | +$354 | +$383 | +$606 |
Rent in St. Mary runs $935 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 24.0% 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 St. Mary
Bachelor's degrees in St. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 12.4% | 26.0% | 28.4% |
| 2010–14 | 10.1% | 27.3% | 29.6% |
| 2015–19 | 13.7% | 29.6% | 32.1% |
| 2020–24 | 18.2% | 32.6% | 35.6% |
| Change | +5.8 pts | +6.6 pts | +7.2 pts |
Fewer adults in St. Mary have a four-year degree than in the country as a whole: 18.2%, against 35.6% nationally.
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. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 83.5% | 86.8% | 84.9% |
| 2010–14 | 77.1% | 88.3% | 86.1% |
| 2015–19 | 89.8% | 90.0% | 87.7% |
| 2020–24 | 88.8% | 91.8% | 89.3% |
| Change | +5.3 pts | +5.1 pts | +4.3 pts |
About as many adults in St. Mary have finished high school as nationally: 88.8%, against 89.3%. The rate is lower than in Missouri as a whole (91.8%).
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. Mary
| Period | St. Mary | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 6.1% | 7.4% | 8.1% |
| 2010–14 | 10.0% | 8.4% | 9.4% |
| 2015–19 | 5.1% | 4.6% | 5.6% |
| 2020–24 | 8.2% | 4.1% | 5.4% |
| Change | +2.2 pts | −3.3 pts | −2.7 pts |
Finding work has been harder in St. Mary: 8.2% of the labor force was out of work and looking, well above the national rate of 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).
St. Mary 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. Mary | 2.70 | 46.1 | 8.6% | 18.9% | 22.0% | 1979 | $935 | 18.2% | 88.8% | 8.2% |
| Ozora | 2.69 | 46.4 | 9.7% | 20.0% | 22.8% | 1978 | $921 | 16.3% | 91.7% | 9.9% |
| Lithium | 2.84 | 38.7 | 5.1% | 9.7% | 11.2% | 1973 | $850 | 36.7% | 90.7% | 6.7% |
| Brewer | 2.65 | 43.2 | 4.5% | 13.7% | 7.1% | 1985 | $843 | 23.9% | 85.7% | 7.9% |
| Minnith | 2.69 | 37.6 | 14.2% | 22.2% | 26.1% | 1981 | $962 | 19.1% | 92.1% | 2.5% |
| River aux Vases | 2.64 | 41.8 | 11.5% | 15.3% | 16.1% | 1977 | $941 | 20.1% | 95.4% | 11.1% |
| Sereno | 2.94 | 35.8 | 6.4% | 15.1% | 14.2% | 1969 | $768 | 41.3% | 94.4% | 3.3% |
| St. Mary | 2.69 | 43.9 | 4.6% | 6.6% | 4.7% | 1978 | $768 | 3.8% | 58.8% | 0.0% |
| Ste. Genevieve | 2.38 | 44.3 | 11.1% | 24.5% | 13.7% | 1972 | $762 | 15.1% | 95.2% | 4.9% |
| Chester | 2.40 | 42.6 | 7.2% | 20.2% | 10.8% | 1965 | $786 | 14.5% | 82.2% | 3.2% |
| New Offenburg | 2.62 | 47.7 | 5.7% | 6.4% | 11.1% | 1976 | $868 | 19.1% | 97.2% | 19.3% |
All figures 2020–24.
Cities with similar populations: Simla, CO · Mainesburg, PA · Midland, MD · Moenave, AZ · Nesmith, SC · New Derry, PA · Rayle, GA · Reynolds, ND · Richford, NY · Rockford, AL
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. Mary. 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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