Affton, Missouri Population 2020

20,187

Affton is a city located in Missouri. Affton has a 2020 population of 20,187. Affton is currently declining at a rate of 0.00% annually and its population has decreased by -0.59% since the most recent census, which recorded a population of 20,307 in 2010. Affton reached it's highest population of 22,060 in 2016.

The average household income in Affton is $68,687 with a poverty rate of 10.26%. The median rental costs in recent years comes to $874 per month, and the median house value is $143,500. The median age in Affton is 41.3 years, 38.6 years for males, and 44.5 years for females. For every 100 females there are 96.0 males.

Affton Demographics

According to the most recent ACS, the racial composition of Affton was:

  • White: 89.64%
  • Black or African American: 3.85%
  • Asian: 3.10%
  • Two or more races: 2.27%
  • Other race: 0.74%
  • Native American: 0.36%
  • Native Hawaiian or Pacific Islander: 0.04%
The current population of Affton, Missouri is 20,187, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 20,187.The last official US Census in 2010 recorded the population at 20,307.

Affton, Missouri Population 2020

Population by Race

Race Population Percentage
White18,09689.64%
Black or African American7773.85%
Asian6263.10%
Two or More Races4582.27%
Some Other Race1490.74%
American Indian and Alaska Native720.36%
Native Hawaiian and Other Pacific Islander90.04%

Affton Population Pyramid 2020

Affton Median Age

41.3


Total

38.6


Male

44.5


Female

Affton Adults

There are 16,693 adults, (3,670 of whom are seniors) in Affton.

Affton Age Dependency

55

Age Dependency Ratio

28.2

Old Age Dependency Ratio

26.8

Child Dependency Ratio

Affton Sex Ratio

Female

10,297

51.01%

Male

9,890

48.99%

Affton Households and Families

Affton Renter vs Owner Occupied by Household Type

Affton Household Types

Type Owner Renter
Married90%10%
All76.3%23.7%
Male70.5%29.5%
Non Family67.2%32.8%
Female57.8%42.2%

76.3%

Rate of Home Ownership

Type Count Average Size Owned
All8,8772.2776.3
Married3,8363.0890
Non Family3,8051.2467.2
Female8053.0157.8
Male4312.8170.5

2.97

Average Family Size

2.27

Average Household Size

7.8%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Affton Education

Education Attained Count Percentage
Less Than 9th Grade4783.28%
9th to 12th Grade9406.46%
High School Graduate3,88526.69%
Some College3,13121.51%
Associates Degree1,4099.68%
Bachelors Degree3,18921.91%
Graduate Degree1,52410.47%

Affton Educational Attainment by Race

Name Total High School Bachelors
White13,26812,0074,312
Black533428150
Asian406406211
Hispanic18613426
Multiple Races10210214
Native American5252
Other Race3333
Islander99

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 51.97%.

Name Average Male Female
Overall$41,054$46,059$35,816
Less Than High School$30,584$33,636$14,904
High School Grad$29,310$41,630$22,361
Some College$39,754$43,796$34,778
Bachelors Degree$49,016$50,117$45,586
Graduate Degree$57,963$70,714$53,902

$41,054

Average Earnings

$46,059

Average Male

$35,816

Average Female

Affton Language

Affton Language by Age

Affton Language

86.93% of Affton residents speak only English, while 13.07% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 8.28% of the population.

Affton Poverty

Affton Poverty by Race

Name Total In Poverty Poverty Rate
White17,7031,6039.05%
Black77728036.04%
Hispanic4517416.41%
Other1497348.99%
Multiple4585411.79%
Native725272.22%

10.26%

Overall Poverty Rate

7.92%

Male Poverty Rate

12.49%

Female Poverty Rate

Poverty in Affton

The race most likely to be in poverty in Affton is Native, with 72.22% below the poverty level.

The race least likely to be in poverty in Affton is White, with 9.05% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.83%. Among those working part-time, it was 16.56%, and for those that did not work, the poverty rate was 13.36%.

Name Poverty
Less Than High School19.75%
High School11.92%
Some College7.84%
Bachelors or Greater2.52%
Name Poverty
Male Unemployed27.04%
Female Unemployed17.47%
Female Employed9.24%
Male Employed3.66%

Affton Income

Affton Income by Household Type

Name Median Mean
Households$58,552$68,687
Families$78,870$83,449
Married Families$84,530-
Non Families$40,595$46,480

Affton Marital Status

Affton Marital Status

Marriage Rates

47.8%

Overall Marriage Rate

51.0%

Male Marriage Rate

45.0%

Female Marriage Rate

Affton Married by Age and Sex

Affton Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Affton Marital Status by Race

Affton Veterans

1,351

Number of Veterans

1,215

Male Veterans

136

Female Veterans

War Veterans
Vietnam353
First Gulf War282
Second Gulf War221
Korea176
World War II94
Name Veterans % of Total
White1,1827.71%
Black12119.36%
2 or More3223.53%
Asian163.35%

$Affton Veterans by Education

7.99%

Veteran Poverty Rate

29.09%

Veteran Disability Rate

Affton Employment Status

68.2%

Labor Force Participation

65.4%

Employment Rate

4.1%

Unemployment Rate

Affton Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

71.42%

Born in Missouri

89.15%

Native Born

10.85%

Foreign Born

3.45%

Non Citizen

Place of Birth

89.15% of Affton residents were born in the United States, with 71.42% having been born in Missouri. 3.45% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Year Population Growth Annual Growth Rate
202020,1870.00%
201920,1870.00%
201820,187-1,517-6.99%
201721,704-356-1.61%
201622,0607153.35%
201521,345-13-0.06%
201421,358-1-0.00%
201321,3591,4147.09%
201219,945-151-0.75%
201120,096-211-1.04%
201020,3070.00%