Affton demographics profile

Population density (sq mi)4,6208691
Median age40.738.337.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)55%57%55%
Families w/ Kids under 1841%42%43%
Speak English87%94%79%
Speak Spanish1%3%13%
Affton, MO has a population of 22,060 and is the 1,971st largest city in the United States. The population density is 4,620 per sq mi which is 5248% higher than the Missouri average and 4999% higher than the national average. The median age in Affton is 41 which is approximately 6% higher than the Missouri average of 38. In Affton, 55% of the population over 15 years of age are married, 87% speak English and 1% speak Spanish. 72% of Affton residents were born in Missouri, 17% were born out of state, 0% were born outside of the United States and 11% were foreign born.

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Did you know?

  • The population density in Affton is 5248% higher than Missouri.
  • The median age in Affton is 6% higher than Missouri.
  • In Affton 91.71% of the population is White.
  • In Affton 3.04% of the population is Black or African American.
  • In Affton 2.64% of the population is Asian.

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Compare Affton, MO Demographics To Other Cities

Affton population breakdown by race

Black or African American3.04%11.58%12.63%
American Indian0.21%0.42%0.82%
Native Hawaiian0.06%0.11%0.18%
Mixed race1.65%2.44%3.06%
Other race0.69%1.13%4.75%
In Affton, 1.7% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Affton age breakdown

Marital status

Age of children in married couples

Source: The Affton, MO demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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