Missouri city profile

Living in O'Fallon, Missouri

What it costs to live in O'Fallon, and how it compares with other Missouri cities, in plain numbers.

Value score

74

4th best value in Missouri

How much you get for what you pay, versus other Missouri cities.

Overall livability

73

6th overall in Missouri

Cost, safety, schools, jobs and quality of life combined.

O'Fallon is home to about 90,802 people. A typical home runs $246,100 and a household earns around $96,200, a price-to-income ratio of 2.6. Among Missouri's largest cities, it ranks 4th for value and 6th overall.

O'Fallon at a glance

Median home price

$246,100

24th in MO of 58

Median rent

$1,185/mo

Median household income

$96,200

Home price to income

2.6x

Unemployment

3.0%

13th in MO of 58

School rating

9/10

10th in MO of 58

Air quality (AQI)

45

0th in MO of 58

Walk score

10/100

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Sources: Home prices and rent from Zillow; income, unemployment and commute from the U.S. Census; school ratings from state education data; crime from the FBI; air quality from the EPA. City rankings are within Missouri only. Updated 2026.