Affton is an unincorporated community and census-designated place (CDP) in south St. Louis County, Missouri, United States, near St. Louis. The population was 20,417 at the 2020 United States census.
Midwest
Affton
St. Louis County, MO
Population
19,922
Walk Score
61 · Somewhat Walkable
Median rent
$961
Median home value
$185,400
From Wikipedia. Released under CC BY-SA.
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