What are the schools like in Affton, MO?

Affton is served primarily by AFFTON 101. The district operates 2 elementary schools, 1 middle schools, and 1 high schools with a student-to-teacher ratio of 14.4:1.

What is the median household income in Affton?

The median household income in Affton, MO is $75,237 according to the most recent US Census American Community Survey 5-year estimates. The unemployment rate is 1.9%.

What is the weather like in Affton, MO?

Affton has an average high temperature of 40.6°F in January and 89.6°F in July. Annual precipitation averages 43.7 inches and annual snowfall averages 13.8 inches.

Affton, MO Cost of Living, Crime & Is It a Good Place to Live? (2026)

Q: Is Affton, MO affordable or expensive?

Affton's cost of living index is 96, where 100 represents the national average. This means Affton is 4% less expensive than the average US city. The median home value is $185,400 and the median rent is $961 per month.

Q: What is the crime rate in Affton, MO?

Affton has a violent crime rate of 371.9 incidents per 100,000 residents and a property crime rate of 2051.6 per 100,000. The national average violent crime rate is approximately 380 per 100,000.

Is Affton, MO a Good Place to Live?

Affton is a small city of 19,922 in Missouri, with a median household income of $75,237 and a 1.9% unemployment rate. Its cost of living index is 96 (US average = 100), which is 4% below the national average.

Strengths: Affton stands out for an affordable cost of living, below-average home prices, solid school ratings (B+), short average commutes.

Trade-offs: No major red flags stand out in the available data. Whether Affton is right for you depends on your priorities — the full breakdown is below.

All Affton city data on this page comes from official government sources — the US Census Bureau, FBI, NCES, BEA, and NOAA — updated annually.

Cost of Living

Index: 96.3

Affton's overall cost of living index is 96.3, where 100 represents the US national average. Living in Affton costs roughly 4% less than the average American city.

Metric	Affton, MO	National Avg
Median Home Value	$185,400	$244,900
Median Monthly Rent	$961	$1,163
Homeownership Rate	77.5%	65.9%
Median Household Income	$75,237	$74,755

Crime & Safety

Safer than Average

Affton's violent crime rate is 371.9 per 100,000 residents — 2% lower than the national average of ~380 per 100,000.

Violent Crime

371.9 /100k

Property Crime

2051.6 /100k

Vertical marker = national average. Source: FBI UCR Program.

Schools & Education

Affton is served primarily by AFFTON 101. The student-to-teacher ratio is 14.4:1 (better than the national average of ~16:1).

Metric	Affton, MO	National Avg
School District	AFFTON 101	—
Elementary Schools	2	—
Middle Schools	1	—
High Schools	1	—
Student/Teacher Ratio	14.4:1	16:1
Bachelor's Degree or Higher	32.9%	35.4%
High School Diploma or Higher	93.1%	91.1%

Weather & Climate

Affton sees average highs of 40.6°F in January and 89.6°F in July, with 43.7 inches of annual precipitation and 13.8 inches of snow per year.

Metric	Affton, MO
Average High — January	40.6°F
Average High — July	89.6°F
Annual Precipitation	43.7"
Annual Snowfall	13.8"

Demographics

Metric	Affton, MO	National Avg
Population	19,922	—
Median Age	42.1	38.9
Unemployment Rate	1.9%	3.7%
Avg Commute Time	22.8 min	26 min
White (non-Hispanic)	86.4%	59.3%
Black or African American	2.8%	13.6%
Hispanic or Latino	3.8%	18.9%
Asian	3.6%	6.3%
Under 18	17.9%	22.2%
65 and over	19.2%	16.8%

Nearby Cities

Lakeshire, MO 1 mi Wilbur Park, MO 1 mi St. George, MO 1 mi Marlborough, MO 1 mi Grantwood Village, MO 1 mi

ZIP Codes in Affton

Affton, MO is covered by 1 ZIP code:

63123

Affton vs Other Cities

Affton, MO vs Lakeshire, MO Affton, MO vs Wilbur Park, MO Affton, MO vs St. George, MO Affton, MO vs Marlborough, MO Affton, MO vs Grantwood Village, MO

Frequently Asked Questions

Is Affton, MO affordable or expensive?

Affton's cost of living index is 96, where 100 is the national average. That makes Affton roughly 4% less expensive than a typical US city — a meaningful affordability advantage. The median home price is $185,400 and median rent is $961/month.

What is the crime rate in Affton, MO?

Affton's violent crime rate is 371.9 per 100,000 residents — the national average is ~380 per 100,000. Property crime is 2051.6 per 100,000 (national avg ~2,100). Data from the FBI Uniform Crime Reporting Program.

What are the schools like in Affton?

Public schools in Affton are operated by AFFTON 101. The district has 2 elementary, 1 middle, and 1 high schools. The student-to-teacher ratio is 14.4:1. 32.9% of adults 25+ hold a bachelor's degree or higher.

Is Affton, MO a good place to live?

Affton, MO has a population of 19,922, a median household income of $75,237, and an unemployment rate of 1.9%. Whether it's right for you depends on your priorities — use the compare tool above to stack it against another city you're considering.

What is the weather like in Affton?

Affton averages 40.6°F in January and 89.6°F in July. Annual rainfall is 43.7 inches with about 13.8 inches of snow per year. Based on NOAA 30-year climate normals (1991–2020).

What ZIP codes are in Affton?

Affton, MO is covered by 1 ZIP code: 63123.

What is the population of Affton?

The population of Affton, Missouri is 19,922 with a median age of 42.1. Source: US Census ACS 5-Year Estimates.

What are the pros and cons of living in Affton?

Key numbers for living in Affton: cost of living index 96 (100 = US average), median home $185,400, median household income $75,237, crime index 98 (100 = US average, lower is safer), schools rated B+. Whether these are benefits or drawbacks depends on where you're coming from — compare Affton side by side with your current city to see the trade-offs.