Demographics in Affton, MO

Population, age, race, ethnicity, and household statistics — 2023 ACS Data

Where is Affton?

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Population

Source: U.S. Census Bureau ACS (2023)

Total Population

20,035

Male

9,891

49.4%

Female

10,144

50.6%

Median Age

41.7

Race & Ethnicity

Source: U.S. Census Bureau ACS (2023)

White

82.2%

Black

3.1%

Hispanic

5.8%

Asian

4.3%

Two or More

9.3%

Other

1.1%

Education & Household

Source: U.S. Census Bureau ACS (2023)

Bachelor's or Higher

25.9%

High School or Higher

43.4%

Foreign Born

13.4%

Veterans

5.7%

Married

42.2%

Avg Household Size

2.3

Marital Status by Age

Source: U.S. Census Bureau ACS (2023)

Affton, MO has a population of 20,035 with a median age of 41.7. The racial makeup is 82.2% White, 5.8% Hispanic, 3.1% Black, 4.3% Asian. About 25.9% of residents hold a bachelor's degree or higher. The foreign-born population is 13.4%.