Population 120,310 · Census ACS 2020–24
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Population and households in St. Charles
Household size in St. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.48 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.49 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.42 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.36 | 2.46 | 2.49 | 2.65 |
| Change | −0.12 | −0.06 | −0.00 | −0.03 |
St. Charles is a place of small households, averaging 2.36 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.48, a much bigger shift than nationally. The biggest households, usually families with children, are concentrated in the southwest.
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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.3 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 39.1 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 40.4 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 41.3 | 40.8 | 40.1 | 40.1 |
| Change | +3.0 | +2.3 | +1.7 | +2.3 |
Half of the people in St. Charles are younger than 41.3 and half are older, close to the national median of 40.1. The median age has climbed from 38.3 in 2006–10, mirroring the country. The youngest areas are in the center, the oldest in the northwest.
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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.7% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 9.6% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 8.1% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 8.3% | 11.1% | 11.0% | 11.6% |
| Change | −1.4 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single parents head only 8.3% of households in St. Charles, well below the national share of 11.6%. The single-parent share is down 1.4 points from 2006–10, mirroring the country.
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. Charles
Renters in St. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 26.0% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 27.4% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 27.0% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 24.6% | 29.6% | 31.9% | 34.8% |
| Change | −1.3 pts | +1.4 pts | +1.9 pts | +1.5 pts |
St. Charles is largely a place of homeowners: only 24.6% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Just over a third of owners (35.3%) have paid off their mortgages, below the national share of 39.8%. The renter share is down 1.3 points from 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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.0% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 6.0% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 6.6% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 5.7% | 8.8% | 10.5% | 9.6% |
| Change | −1.3 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Fewer homes sit empty in St. Charles than nationally: 5.7%, against 9.6% for the U.S. Since 2006–10, vacancy has edged down 1.3 points, mirroring the country.
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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1982 | 1972 | 1974 | 1974 |
| 2010–14 | 1982 | 1972 | 1975 | 1975 |
| 2015–19 | 1982 | 1973 | 1976 | 1977 |
| 2020–24 | 1985 | 1975 | 1978 | 1980 |
| Change | +3 | +3 | +4 | +6 |
The housing in St. Charles is a little younger than the country's: half of it was built after 1985, against 1980 nationally. The newest homes are mostly in the south, 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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $875 | $825 | $740 | $965 |
| 2010–14 | $977 | $920 | $816 | $1,040 |
| 2015–19 | $1,170 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,405 | $1,239 | $1,122 | $1,571 |
| Change | +$530 | +$414 | +$383 | +$606 |
A typical rental in St. Charles costs $1,405 a month with utilities, below the national median of $1,571. Even so, rents here are higher than in the wider St. Louis area ($1,239). Rent has climbed $530 a month since 2006–10, up 61%, roughly in step with the nation. Rent takes 29.5% of the typical renter's income, just under the 30% mark often used to define affordable rent.
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. Charles
Bachelor's degrees in St. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 32.9% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 36.2% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 38.5% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 43.6% | 38.5% | 32.6% | 35.6% |
| Change | +10.7 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are more common in St. Charles than nationally: 43.6% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree is up 10.7 points from 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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 91.2% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 93.0% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 94.3% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 95.7% | 93.6% | 91.8% | 89.3% |
| Change | +4.5 pts | +4.8 pts | +5.1 pts | +4.3 pts |
High school completion is high in St. Charles: 95.7% 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 4.5 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. Charles
| Period | St. Charles | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.2% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 6.8% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 2.5% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 3.2% | 4.3% | 4.1% | 5.4% |
| Change | −2.9 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Unemployment in St. Charles has been low: just 3.2% of the labor force was out of work and looking, well below the national rate of 5.4%. Unemployment has fallen 2.9 points since 2006–10, mirroring the country. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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. Charles 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. Charles | 2.36 | 41.3 | 8.3% | 24.6% | 5.7% | 1985 | $1,405 | 43.6% | 95.7% | 3.2% |
| St. Peters | 2.52 | 41.7 | 8.4% | 18.2% | 4.7% | 1988 | $1,493 | 39.3% | 95.6% | 2.7% |
| Kampville | 2.35 | 40.0 | 18.0% | 16.4% | 5.1% | 1988 | $1,021 | 10.3% | 80.3% | 9.7% |
| Champ | 2.31 | 45.0 | 5.3% | 9.7% | 3.9% | 1980 | $1,722 | 50.9% | 91.9% | 1.5% |
| Maryland Heights | 2.22 | 36.6 | 7.7% | 43.3% | 4.9% | 1975 | $1,308 | 53.2% | 95.6% | 2.6% |
| Cottleville | 2.77 | 43.1 | 6.5% | 11.4% | 5.1% | 1998 | $1,790 | 48.8% | 97.5% | 2.0% |
| Bridgeton | 2.40 | 47.2 | 14.4% | 29.5% | 6.4% | 1976 | $1,141 | 33.7% | 89.3% | 3.7% |
| Weldon Spring | 2.66 | 46.9 | 6.5% | 12.4% | 4.1% | 1995 | $2,616 | 59.5% | 98.6% | 3.4% |
| South Shore | 2.16 | 47.5 | 6.6% | 5.7% | 12.8% | 1973 | $1,042 | 11.8% | 82.0% | 6.1% |
| Peruque | 2.06 | 40.3 | 12.1% | 53.2% | 10.0% | 1969 | $1,164 | 8.5% | 84.2% | 0.0% |
| Chesterfield | 2.41 | 46.2 | 5.8% | 22.5% | 5.4% | 1983 | $1,805 | 72.0% | 98.0% | 3.1% |
All figures 2020–24.
Cities with similar populations: Mansfield, OH · Mansfield, TX · Madera, CA · Maple Grove, MN · Marietta, GA · Madison, AL · Manteca, CA · Manhattan, NY · Magnolia, TX · Longmont, CO
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. Charles. 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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