Cost of Living in Affton, MO
Population 20,035 · Missouri · Data vintage 2023
(100 = US avg)
Affton offers a notably favorable income-to-housing ratio for its region. The typical home — $200,000 — costs less than 2.6 times median household income of $77,337, a threshold many coastal markets passed a decade ago. The labor market has been unusually tight, with unemployment around 2.5% — below most comparable cities in the state.
Located 7 miles southwest of St. Louis, Affton falls within that metro's commuting orbit. Median home values run roughly 8% higher than St. Louis' $185,000.
Cost Overview
Scale: 100 = US national average. Green < 90, Red > 110.
About the Cost of Living in Affton
The median home value in Affton is $200,300 — 34% below the national median of $305,000. Median rent runs $978/month, 26% lower than the national median of $1,314/month. The median household income of $77,337/year is 4% higher than the US median of $74,580. The local unemployment rate is 2.5%, below the national average of 4.8%. Missouri's top state income tax rate is 5.0% and the combined sales tax is 8.4%. Overall, Affton has a cost of living index of 69 versus the US average of 100, meaning it is 31% less expensive.
🏠 Housing
HUD Fair Market Rents by Bedroom
💰 Estimated Monthly Budget
Estimates based on median data and national averages. Actual costs vary.
🛒 Food & Groceries
National BLS average prices (2023). Local prices may vary.
🚗 Transportation
Commute Mode
⚡ Utilities
📋 Taxes
💼 Income & Employment
🎓 Education
👥 Demographics
Frequently Asked Questions
What is the cost of living in Affton, MO?
Affton has a cost index of 69 (100 = national average). It is 31% below the national average.
What is average rent in Affton, MO?
The median gross rent in Affton is $978 per month based on 2023 Census data.
What is the average home price in Affton?
The median home value in Affton is $200,300 according to Zillow and Census data.
What is the median income in Affton?
The median household income in Affton is $77,337 per year (2023 ACS 5-year estimates).
What is the sales tax in Affton, MO?
The combined state and local sales tax rate in Affton is 8.4%. The Missouri state income tax top rate is 5.0%.
Is Affton, MO affordable?
Yes, Affton is generally considered affordable, with a cost of living index of 69 — about 31% below the US national average of 100.
Affton at a Glance
- Population
- 20,035
- Median Income
- $77,337
- Home Value
- $200,300
- Median Rent
- $978/mo
- Unemployment
- 2.5%
- Sales Tax
- 8.4%
Nearby Cities
Explore county-level cost of living data
Missouri Rankings
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