Also See: Affton, MO ZIP Codes & ZIP Code Maps
The Affton CDP(1) had a population of 20,421 as of July 1, 2021. Affton ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Missouri. See peer rankings below.
The primary coordinate point for Affton is located at latitude 38.5506 and longitude -90.3332 in St. Louis County. The formal boundaries for the Affton Census Designated Place encompass a land area of 4.78 sq. miles and a water area of 0 sq. miles. St. Louis County is in the Central time zone (GMT -6). The elevation is 620 feet.
The Affton Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.
|Total Population||20,421 (100%)|
|Population in Households||20,419 (100.0%)|
|Population in Families||15,431 (75.6%)|
|Population in Group Quarters1||2 ( 0.0%)|
|Median Household Income||$62,937|
|Average Household Income||$76,071|
|% of Income for Mortgage4||12%|
|Per Capita Income||$33,476|
|Total HU (Housing Units)||9,452 (100%)|
|Owner Occupied HU||6,661 (70.5%)|
|Renter Occupied HU||2,237 (23.7%)|
|Vacant Housing Units||554 ( 5.9%)|
|Median Home Value||$175,364|
|Average Home Value||$198,649|
|Housing Affordability Index3||191|
|Average Household Size||2.29|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||2.0%|
|Per Capita Income||2.29%|
|Owner Occupied HU||0.39%|
The table below compares Affton to the other 1,032 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2021 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
|Total Population||# 38||96th|
|Population Density||# 34||97th|
|Median Household Income||# 222||79th|
|Housing Affordability Index||# 431||42nd|
|Per Capita Income||# 177||83rd|
|Diversity Index||# 291||72nd|
Additional comparisons and rankings can be made with a VERY EASY TO USE Missouri Census Data Comparison Tool.