Affton, MO

Very Low · 69

Missouri · Population 20,035 · Updated March 2026

$978
Median Rent / Month
$77,337
Median Income
$200,300
Median Home Value
$1,097
Owner Costs / Month

Affordability

How far your income goes in Affton

15.2%
Rent-to-Income Ratio
Affordable
Rent takes less than 25% of median income — considered affordable by HUD standards.

Tax Burden in Missouri

State-level tax rates that affect your costs

4.95%
Income Tax (Top Rate)
4.225%
Sales Tax
0.93%
Property Tax Rate

Estimated Annual Costs

$11,736
Annual Rent
$3,828
State Income Tax
$1,863
Property Tax (est.)

Cost of Living Overview

Affton is significantly cheaper than the national average, making it an attractive option for budget-conscious individuals and families. With a cost index of 69 (where 100 equals the national median), Affton residents can expect to pay median rent of $978/month while earning a median household income of $77,337/year.

The median home value in Affton, MO is $200,300, with typical monthly owner costs around $1,097 including mortgage, insurance, and taxes. The median rent-to-income ratio of 15.2% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.

Missouri has a moderate income tax rate of 4.95%. Combined with a 4.225% sales tax rate and 0.93% effective property tax rate, the overall tax environment is a factor in the total cost of living in Affton.

Frequently Asked Questions

Common questions about living costs in Affton

What is the cost of living in Affton, MO?
The cost of living index in Affton, MO is 69 (US average = 100). Median monthly rent is $978, median household income is $77,337/year, and the median home value is $200,300.
Is Affton, MO affordable?
Yes, Affton is more affordable than the national average with a cost index of 69. The rent-to-income ratio is 15.2%—below the 30%% threshold considered affordable by HUD.
What is the average rent in Affton, MO?
The median gross rent in Affton, MO is $978 per month according to the US Census Bureau ACS 2023 data. Annual rent costs approximately $11,736.
What is the median household income in Affton?
The median household income in Affton, MO is $77,337 per year. This compares to the national median of approximately $80,000.
What are the taxes like in Missouri?
Missouri has a top income tax rate of 4.95%, a sales tax of 4.225%, and an effective property tax rate of 0.93%.