Missouri · United States
Affton population
20,307people · latest figure
Affton has a population of 20,307, making it the 2202nd largest place we list in United States. It is in Missouri.
Affton holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 434 times its size. Twenty years earlier the World Gazetteer recorded 20,092, almost unchanged.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Affton is in Missouri, which has 518 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Cartersville | Georgia | 20,319 |
| Ashland | Ohio | 20,317 |
| Oakleaf Plantation | Florida | 20,315 |
| Elmwood Park | New Jersey | 20,279 |
| Elko | Nevada | 20,279 |
| Nogales | Arizona | 20,252 |
All places in United States → · Missouri →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.