Cost of Living in O'Fallon, MO
Population 92,697 · Missouri · Data vintage 2023
(100 = US avg)
Most of O'Fallon's cost indicators track within a reasonable band of national figures, with median household incomes near $107,203 — a more representative starting point for relocation math than the headline-expensive or headline-cheap cities on either tail. An unemployment rate of 2.6% points to a labor market well on the tight side of the national distribution.
Geographically, O'Fallon is about 30 miles west of St. Louis, the nearest large metro. Median home values run roughly 65% higher than St. Louis' $185,000.
Cost Overview
Scale: 100 = US national average. Green < 90, Red > 110.
About the Cost of Living in O'Fallon
The median home value in O'Fallon is $305,100 — equal to the national median of $305,000. Median rent runs $1,400/month, 7% higher than the national median of $1,314/month. The median household income of $107,203/year is 44% higher than the US median of $74,580. The local unemployment rate is 2.6%, 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, O'Fallon has a cost of living index of 103 versus the US average of 100, meaning it is 3% more 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
🏫 Schools
NCES CCD 2019 — public school district data
Frequently Asked Questions
What is the cost of living in O'Fallon, MO?
O'Fallon has a cost index of 103 (100 = national average). It is 3% above the national average.
What is average rent in O'Fallon, MO?
The median gross rent in O'Fallon is $1,400 per month based on 2023 Census data.
What is the average home price in O'Fallon?
The median home value in O'Fallon is $305,100 according to 2023 Census ACS data.
What is the median income in O'Fallon?
The median household income in O'Fallon is $107,203 per year (2023 ACS 5-year estimates).
What is the sales tax in O'Fallon, MO?
The combined state and local sales tax rate in O'Fallon is 8.4%. The Missouri state income tax top rate is 5.0%.
Is O'Fallon, MO affordable?
O'Fallon is near the national average in terms of cost of living, with an index of 103 (100 = US average).
O'Fallon at a Glance
- Population
- 92,697
- Median Income
- $107,203
- Home Value
- $305,100
- Median Rent
- $1,400/mo
- Unemployment
- 2.6%
- Sales Tax
- 8.4%
Nearby Cities
Explore county-level cost of living data
Missouri Rankings
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