Population 11,853 · Census ACS 2020–24
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Population and households in St. Marys
Household size in St. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 2.47 | 2.51 | 2.68 |
| 2010–14 | 2.40 | 2.51 | 2.73 |
| 2015–19 | 2.39 | 2.47 | 2.71 |
| 2020–24 | 2.40 | 2.46 | 2.65 |
| Change | −0.06 | −0.05 | −0.03 |
Households in St. Marys run small, averaging 2.40 people against 2.65 nationally, which usually means more singles and couples and fewer children. Since 2006–10, household size has edged down from 2.47, as it has nationally. The biggest households, usually families with children, are concentrated in the east.
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. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 39.6 | 39.0 | 37.7 |
| 2010–14 | 43.2 | 40.0 | 38.6 |
| 2015–19 | 40.3 | 40.7 | 39.6 |
| 2020–24 | 42.2 | 40.8 | 40.1 |
| Change | +2.6 | +1.8 | +2.3 |
St. Marys skews a little older than the country: its median age is 42.2, against 40.1 nationally. The median age has climbed from 39.6 in 2006–10, mirroring the country. The youngest areas are in the center, the oldest in the west.
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. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 8.7% | 11.7% | 12.3% |
| 2010–14 | 10.2% | 11.9% | 12.3% |
| 2015–19 | 13.0% | 11.7% | 11.6% |
| 2020–24 | 11.8% | 11.7% | 11.6% |
| Change | +3.2 pts | −0.0 pts | −0.6 pts |
Single-parent households are about as common in St. Marys as they are nationally: 11.8%, against 11.6%. Since 2006–10, the single-parent share has risen 3.2 points, 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. Marys
Renters in St. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 27.5% | 30.8% | 33.3% |
| 2010–14 | 31.9% | 33.1% | 35.6% |
| 2015–19 | 27.0% | 33.9% | 36.0% |
| 2020–24 | 21.8% | 32.8% | 34.8% |
| Change | −5.7 pts | +2.0 pts | +1.5 pts |
St. Marys is largely a place of homeowners: only 21.8% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Just over four in ten owners (42.8%) have paid off their mortgages, about the same as nationally. The renter share has fallen 5.7 points since 2006–10, 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. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 9.4% | 10.8% | 11.4% |
| 2010–14 | 12.7% | 10.8% | 11.4% |
| 2015–19 | 7.1% | 10.2% | 11.1% |
| 2020–24 | 7.3% | 8.7% | 9.6% |
| Change | −2.1 pts | −2.2 pts | −1.8 pts |
Fewer homes sit empty in St. Marys than nationally: 7.3%, against 9.6% for the U.S. The picture is much the same across Ohio. Vacancy is down 2.1 points from 2006–10, as it has nationally.
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. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 1965 | 1968 | 1974 |
| 2010–14 | 1963 | 1969 | 1975 |
| 2015–19 | 1968 | 1970 | 1977 |
| 2020–24 | 1960 | 1972 | 1980 |
| Change | −5 | +4 | +6 |
The housing in St. Marys is old by national standards: the median home dates to 1960, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. Newer construction is concentrated in the northwest, while the center has the oldest housing. St. Marys has older homes than the great majority of Ohio cities.
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. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | $671 | $765 | $965 |
| 2010–14 | $653 | $814 | $1,040 |
| 2015–19 | $808 | $901 | $1,213 |
| 2020–24 | $981 | $1,142 | $1,571 |
| Change | +$309 | +$377 | +$606 |
The median renter in St. Marys pays $981 a month for rent and utilities, well below the national median of $1,571. Rents are up $309 a month from 2006–10, a 46% rise, a slower climb than the nation's. Rent takes 21.5% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. The priciest rents are in the northeast; the most affordable are in the center.
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. Marys
Bachelor's degrees in St. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 15.0% | 25.4% | 28.4% |
| 2010–14 | 16.6% | 26.5% | 29.6% |
| 2015–19 | 16.0% | 28.9% | 32.1% |
| 2020–24 | 18.8% | 31.9% | 35.6% |
| Change | +3.8 pts | +6.5 pts | +7.2 pts |
Fewer adults in St. Marys have a four-year degree than in the country as a whole: 18.8%, against 35.6% nationally. The share with a degree has risen 3.8 points since 2006–10, as it has nationally. 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 St. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 89.0% | 87.7% | 84.9% |
| 2010–14 | 89.0% | 88.9% | 86.1% |
| 2015–19 | 90.5% | 90.4% | 87.7% |
| 2020–24 | 95.9% | 91.7% | 89.3% |
| Change | +6.9 pts | +4.0 pts | +4.3 pts |
High school completion is high in St. Marys: 95.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has risen 6.9 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 St. Marys
| Period | St. Marys | Ohio | U.S. |
|---|---|---|---|
| 2006–10 | 8.0% | 8.7% | 8.1% |
| 2010–14 | 6.8% | 9.4% | 9.4% |
| 2015–19 | 3.1% | 5.5% | 5.6% |
| 2020–24 | 1.7% | 4.9% | 5.4% |
| Change | −6.4 pts | −3.8 pts | −2.7 pts |
Unemployment in St. Marys has been low: just 1.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Of the 372 Ohio cities with 5,000+ people, only 22 have lower unemployment. Unemployment has fallen 6.4 points since 2006–10, as it has nationally.
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. Marys 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. Marys | 2.40 | 42.2 | 11.8% | 21.8% | 7.3% | 1960 | $981 | 18.8% | 95.9% | 1.7% |
| Villa Nova | 2.14 | 53.2 | 4.2% | 19.1% | 17.3% | 1982 | $1,126 | 17.1% | 96.0% | 7.0% |
| Glynwood | 2.65 | 40.7 | 8.2% | 5.9% | 4.4% | 1975 | $1,344 | 38.0% | 98.1% | 3.2% |
| Neptune | 2.20 | 44.5 | 7.4% | 20.6% | 8.4% | 1969 | $766 | 19.4% | 97.8% | 3.5% |
| New Knoxville | 2.56 | 40.7 | 8.6% | 25.4% | 3.4% | 1961 | $908 | 24.9% | 97.5% | 3.5% |
| Moulton | 2.66 | 42.6 | 4.0% | 5.5% | 4.3% | 1978 | $1,192 | 36.5% | 96.5% | 2.2% |
| New Bremen | 2.42 | 41.1 | 4.3% | 21.6% | 4.8% | 1960 | $859 | 30.8% | 98.1% | 0.1% |
| Buckland | 2.48 | 52.7 | 11.2% | 7.4% | 2.0% | 1973 | $1,268 | 20.1% | 89.9% | 0.7% |
| Montezuma | 2.25 | 48.0 | 3.4% | 13.3% | 28.6% | 1991 | $828 | 17.2% | 94.7% | 2.1% |
| Chickasaw | 2.76 | 36.4 | 1.7% | 13.7% | 2.1% | 1972 | $835 | 31.1% | 98.1% | 0.0% |
| Celina | 2.42 | 42.5 | 9.7% | 26.2% | 12.5% | 1973 | $793 | 20.3% | 94.9% | 1.9% |
All figures 2020–24.
Cities with similar populations: Bethalto, IL · Brown Deer, WI · Bridgewater, NJ · Vienna, WV · Brandon, SD · Blanchard, OK · Yorkshire, VA · Beverly, NJ · Yorktown, IN · Aberdeen, NC
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. Marys. 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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