Population 16,799 · 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 Affton: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in Affton
Household size in Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.26 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.32 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.24 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.17 | 2.46 | 2.49 | 2.65 |
| Change | −0.09 | −0.06 | −0.00 | −0.03 |
Affton is a place of small households, averaging 2.17 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.26 in 2006–10, as it has nationally. Only six of the 191 Missouri cities with 5,000+ people have smaller households.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 39.6 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 40.1 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 41.9 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 44.4 | 40.8 | 40.1 | 40.1 |
| Change | +4.8 | +2.3 | +1.7 | +2.3 |
Affton skews older: half of its residents are older than 44.4, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families. The median age has climbed from 39.6 in 2006–10, mirroring the country.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.9% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 9.5% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 9.5% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 6.0% | 11.1% | 11.0% | 11.6% |
| Change | −3.9 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single parents head only 6.0% of households in Affton, well below the national share of 11.6%. The single-parent share has fallen 3.9 points since 2006–10, a much bigger shift than nationally. Only 14 of the 191 Missouri cities with 5,000+ people have a lower share of single-parent households.
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 Affton
Renters in Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 24.4% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 25.1% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 29.4% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 24.8% | 29.6% | 31.9% | 34.8% |
| Change | +0.4 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Most households in Affton own their homes; 24.8% rent, below the national share of 34.8%. Nearly four in ten owners (38.4%) have paid off their mortgages, about the same as nationally. Rentals cluster in the northwest; owners are most common in the east.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.5% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 7.2% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 4.8% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 7.1% | 8.8% | 10.5% | 9.6% |
| Change | +0.6 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Fewer homes sit empty in Affton than nationally: 7.1%, against 9.6% for the U.S. Vacancy has edged up 0.6 points since 2006–10, even as the national rate fell.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1961 | 1972 | 1974 | 1974 |
| 2010–14 | 1959 | 1972 | 1975 | 1975 |
| 2015–19 | 1962 | 1973 | 1976 | 1977 |
| 2020–24 | 1960 | 1975 | 1978 | 1980 |
| Change | −1 | +3 | +4 | +6 |
Affton is a place of older homes: half were built before 1960, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. Newer construction is concentrated in the southwest, while the northeast has the oldest housing. Of the 191 Missouri cities with 5,000+ people, only 17 have older homes.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $796 | $825 | $740 | $965 |
| 2010–14 | $801 | $920 | $816 | $1,040 |
| 2015–19 | $897 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,088 | $1,239 | $1,122 | $1,571 |
| Change | +$293 | +$414 | +$383 | +$606 |
Rent in Affton runs $1,088 a month at the median, utilities included, well below the U.S. median of $1,571. Rent has climbed $293 a month since 2006–10, up 37%, a slower climb than the nation's. The typical renter here spends 23.7% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Renters on a budget will find the lowest rents in the southwest; the highest are in the southeast.
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 Affton
Bachelor's degrees in Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 28.5% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 34.3% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 32.8% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 36.0% | 38.5% | 32.6% | 35.6% |
| Change | +7.5 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are about as common in Affton as nationally: 36.0% of adults 25 and older have a bachelor's or higher, against 35.6%. The share with a degree has risen 7.5 points since 2006–10, mirroring the country. College graduates are most concentrated in the southwest and least in the southeast.
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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.9% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 91.6% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 91.9% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 92.1% | 93.6% | 91.8% | 89.3% |
| Change | +4.2 pts | +4.8 pts | +5.1 pts | +4.3 pts |
About nine in ten adults in Affton have finished high school (92.1%), a bit above the national rate of 89.3%. The St. Louis area as a whole looks much the same. Since 2006–10, the share with a diploma has risen 4.2 points, 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 Affton
| Period | Affton | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.6% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 5.7% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 5.0% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 1.6% | 4.3% | 4.1% | 5.4% |
| Change | −6.0 pts | −3.4 pts | −3.3 pts | −2.7 pts |
The job market in Affton has been strong: just 1.6% of the labor force was out of work and looking, well below the national rate of 5.4%. Of the 191 Missouri cities with 5,000+ people, only 14 have lower unemployment. Unemployment has fallen 6.0 points since 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).
Affton 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Affton | 2.17 | 44.4 | 6.0% | 24.8% | 7.1% | 1960 | $1,088 | 36.0% | 92.1% | 1.6% |
| Wilbur Park | 2.35 | 41.5 | 8.9% | 11.6% | 6.1% | 1954 | $898 | 35.0% | 96.7% | 0.4% |
| Lakeshire | 2.23 | 36.8 | 15.6% | 54.6% | 15.0% | 1963 | $1,032 | 32.0% | 94.3% | 2.4% |
| St. George | 2.12 | 42.6 | 5.5% | 13.1% | 5.9% | 1962 | $996 | 35.7% | 91.2% | 1.8% |
| Grantwood Village | 2.95 | 43.2 | 5.6% | 2.3% | 2.1% | 1961 | $971 | 67.9% | 99.1% | 1.2% |
| Marlborough | 1.92 | 35.7 | 5.5% | 63.6% | 14.3% | 1964 | $998 | 33.5% | 91.1% | 0.1% |
| Green Park | 2.42 | 44.6 | 8.6% | 11.5% | 2.5% | 1969 | $963 | 42.4% | 91.3% | 1.2% |
| Bella Villa | 2.49 | 33.4 | 18.3% | 20.4% | 7.2% | 1954 | $1,169 | 23.4% | 87.9% | 1.8% |
| Shrewsbury | 2.00 | 49.4 | 7.7% | 35.2% | 6.1% | 1966 | $1,155 | 57.1% | 97.6% | 3.7% |
| Lemay | 2.60 | 38.5 | 15.0% | 24.2% | 15.8% | 1954 | $906 | 20.2% | 86.6% | 2.7% |
| Webster Groves | 2.53 | 41.3 | 6.2% | 23.2% | 6.0% | 1952 | $1,800 | 71.5% | 98.8% | 3.5% |
All figures 2020–24.
Cities with similar populations: Havelock, NC · Somerton, AZ · Rockport, TX · Marlboro, NJ · Norton, MA · Northfield, OH · Union, MO · Stoughton, WI · Madison, CT · Exton, PA
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 Affton. 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.