Average Rent in O Fallon, IL
The typical rent in O Fallon, IL is $1,645/month (as of April 2026).
Average market rent
$1,645/mo
Zillow Observed Rent Index (ZORI) · April 2026
Median gross rent
$1,332/mo
US Census Bureau (ACS) · December 2024
Average rent by bedroom in O Fallon, IL
| Type | Average rent |
|---|---|
| 1 bedroom | $1,036/mo |
| 2 bedroom | $1,267/mo |
| 3 bedroom | $1,742/mo |
| 4 bedroom | $2,152/mo |
Source: US Census Bureau (ACS) (December 2024).
Renting in O Fallon, IL?
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Frequently asked questions
What is the average rent in O Fallon, IL?
The average rent in O Fallon, IL is approximately $1,645 per month as of April 2026, based on Zillow Observed Rent Index (ZORI).
How much is a 2-bedroom in O Fallon, IL?
The average rent for a 2-bedroom in O Fallon, IL is about $1,267 per month (US Census Bureau (ACS)).
How often is this data updated?
The calculator refreshes from Zillow Observed Rent Index (ZORI), every month.
Rent in nearby cities (IL)
Estimates only, for informational purposes. Source: Zillow Observed Rent Index (ZORI). Actual rents vary by neighborhood, bedroom count, condition, and timing.