Population 80,733 · Census ACS 2020–24
Choose a measure to map it.Tap a measure to map it. Swipe the row for more. Arrows show the change since 2006–10.
Median age by neighborhoodHistory and comparison ↓︎
Younger residents
Older residents
Colorblind friendly
off
More maps of St. Peters: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in St. Peters
Household size in St. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.71 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.68 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.65 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.52 | 2.46 | 2.49 | 2.65 |
| Change | −0.18 | −0.06 | −0.00 | −0.03 |
The average household in St. Peters has 2.52 people, a bit under the U.S. average of 2.65. Since 2006–10, household size has dropped from 2.71, a much bigger shift than nationally. Households are largest in the southwest and smallest in the north.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.5 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 39.7 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 40.7 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 41.7 | 40.8 | 40.1 | 40.1 |
| Change | +4.2 | +2.3 | +1.7 | +2.3 |
The median resident of St. Peters is 41.7 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has climbed from 37.5, in line with the national trend. Residents skew youngest in the south and oldest in the north.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.2% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 8.1% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 8.6% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 8.4% | 11.1% | 11.0% | 11.6% |
| Change | +0.2 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single parents head only 8.4% of households in St. Peters, well below the national share of 11.6%. St. Peters has a lower share of single-parent households than most Missouri cities.
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. Peters
Renters in St. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.1% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 15.9% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 16.1% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 18.2% | 29.6% | 31.9% | 34.8% |
| Change | +3.1 pts | +1.4 pts | +1.9 pts | +1.5 pts |
St. Peters is largely a place of homeowners: only 18.2% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. About three in ten owners (29.7%) have paid off their mortgages, well below the national share of 39.8%. The renter share has risen 3.1 points since 2006–10, mirroring the country.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.5% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 4.1% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 6.1% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 4.7% | 8.8% | 10.5% | 9.6% |
| Change | +0.3 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Only 4.7% of homes in St. Peters are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. St. Peters has a lower vacancy rate than the great majority of Missouri cities.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1986 | 1972 | 1974 | 1974 |
| 2010–14 | 1987 | 1972 | 1975 | 1975 |
| 2015–19 | 1988 | 1973 | 1976 | 1977 |
| 2020–24 | 1988 | 1975 | 1978 | 1980 |
| Change | +2 | +3 | +4 | +6 |
St. Peters has newer housing than the country as a whole: the median home was built in 1988, versus 1980 nationally. Newer construction is concentrated in the southwest, while the center has the oldest housing.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,005 | $825 | $740 | $965 |
| 2010–14 | $1,079 | $920 | $816 | $1,040 |
| 2015–19 | $1,090 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,493 | $1,239 | $1,122 | $1,571 |
| Change | +$488 | +$414 | +$383 | +$606 |
Rent in St. Peters runs $1,493 a month at the median, utilities included, close to the U.S. median of $1,571. Rents here are higher than in the St. Louis area overall ($1,239). Rent has climbed $488 a month since 2006–10, up 49%, a slower climb than the nation's. Rent takes 30.1% of the typical renter's income, just over 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. Peters
Bachelor's degrees in St. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 31.2% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 33.9% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 37.8% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 39.3% | 38.5% | 32.6% | 35.6% |
| Change | +8.1 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are a bit more common in St. Peters than nationally: 39.3% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree is up 8.1 points from 2006–10, mirroring the country. College graduates are most concentrated in the southwest and least in the north.
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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 92.6% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 93.5% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 95.1% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 95.6% | 93.6% | 91.8% | 89.3% |
| Change | +3.1 pts | +4.8 pts | +5.1 pts | +4.3 pts |
High school completion is high in St. Peters: 95.6% 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 3.1 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. Peters
| Period | St. Peters | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.3% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 6.3% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 3.5% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 2.7% | 4.3% | 4.1% | 5.4% |
| Change | −2.6 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Unemployment in St. Peters has been low: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 2.6 points, as it has nationally. 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. Peters 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. Peters | 2.52 | 41.7 | 8.4% | 18.2% | 4.7% | 1988 | $1,493 | 39.3% | 95.6% | 2.7% |
| Cottleville | 2.77 | 43.1 | 6.5% | 11.4% | 5.1% | 1998 | $1,790 | 48.8% | 97.5% | 2.0% |
| Weldon Spring | 2.66 | 46.9 | 6.5% | 12.4% | 4.1% | 1995 | $2,616 | 59.5% | 98.6% | 3.4% |
| St. Charles | 2.36 | 41.3 | 8.3% | 24.6% | 5.7% | 1985 | $1,405 | 43.6% | 95.7% | 3.2% |
| O'fallon | 2.64 | 39.7 | 9.7% | 20.4% | 3.7% | 1996 | $1,403 | 39.3% | 94.7% | 3.5% |
| Kampville | 2.35 | 40.0 | 18.0% | 16.4% | 5.1% | 1988 | $1,021 | 10.3% | 80.3% | 9.7% |
| Dardenne Prairie | 2.79 | 41.1 | 8.1% | 17.6% | 3.8% | 2002 | $1,561 | 53.5% | 98.5% | 2.2% |
| Weldon Spring Heights | 2.62 | 49.7 | 3.6% | 20.2% | 10.4% | 2000 | $3,382 | 58.2% | 96.9% | 0.4% |
| Peruque | 2.06 | 40.3 | 12.1% | 53.2% | 10.0% | 1969 | $1,164 | 8.5% | 84.2% | 0.0% |
| St. Paul | 2.93 | 39.3 | 6.9% | 1.8% | 3.9% | 2010 | $1,391 | 44.7% | 97.8% | 0.6% |
| Lake St. Louis | 2.75 | 41.2 | 7.1% | 16.8% | 4.4% | 2002 | $1,660 | 51.5% | 97.3% | 3.1% |
All figures 2020–24.
Cities with similar populations: Killeen, TX · Haverhill, MA · Harrisonburg, VA · High Point, NC · Hayward, CA · Hillsboro, OR · Hagerstown, MD · Gulfport, MS · Harlingen, TX · Hartford, CT
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. Peters. 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.
No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links on this page. Please share or cite this page if you aren’t able to otherwise support our work.