Rents are 5% below what O Fallon's 10-year trend predicts — a better deal than its own history suggests.
Rent by unit size
Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).
12-month history
Last updated: July 20, 2026
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Who lives here
O Fallon, IL is majority owner-occupied, has a large share of families with children, 52.4% of residents hold a bachelor's degree or higher.
Source: U.S. Census Bureau · ACS 2024 5-Year Estimates
How O Fallon, IL has changed in 5 years
Five years ago, renters in O Fallon, IL paid around $1,439 a month. That figure now sits near $1,599, up 11.1% from the 2022 baseline. The renter share has risen from 27.4% to 29.8%, with owner-occupied housing accounting for the remainder. Bachelor's-degree-or-higher attainment moved from 49.5% to 52.4% across the same window. Taken together, the five-year picture in O Fallon, IL reflects how housing costs and the people paying them have evolved through a stretch that included a pandemic, a hot rental market, and a recent cooling phase.
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Can you afford rent in O Fallon on your salary?
At $1,599/mo, how O Fallon rent compares to typical pay (30% rule).
O Fallon rent by bedroom count
Median rent for each apartment size in O Fallon. Click any size for full breakdown.
Tips for renters in O Fallon
Last updated: July 20, 2026
The median rent in O Fallon is $1,599/mo as of July 2026. A studio apartment averages $1,130/mo while a 2-bedroom runs $1,440/mo. One-bedroom apartments average $1,170/mo and 3-bedroom units go for $1,860/mo.
At 27% of estimated US median household income ($72,000/yr), O Fallon ranks as affordable compared to the national benchmark of 30%. Rents have decreased 3.9% over the past year.
Frequently asked questions
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What percentage of O Fallon residents rent vs. own?
How does O Fallon rent compare to the national average?
At $1,599/mo, rent takes ~27% of US median household income ($72,000/yr). The standard benchmark is 30%.
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Estimated from ZIP-level data
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