Affton is located in Missouri. Affton, Missouri has a population of 20,422. Affton is less family-centric than the surrounding county with 24% households with children. The county percentage for households with children is 27%.
The median household income in Affton, Missouri is $62,065. The median household income for the surrounding county is $69,900 compared to the national median of $66,222. The median age of people living in Affton is 41.2 years.
The average high temperature in July is 90.5 degrees, with an average low temperature in January of 21.2 degrees. The annual precipitation is 38.84.