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Rent in O'Fallon, IL: Prices & Apartments for Rent

As of October 16, 2026, the median asking rent for a 2-bedroom in O'Fallon, IL is $1,295/month, based on 24 active listings on Redfin, Zillow and ApartmentHomeLiving.

That is 41% below the Illinois 2-bedroom median of about $2,200. Nearby, the 2-bedroom median ranges from $1,100 in Belleville to $1,700 in Clayton.

Updated · 85 listings. Prices are advertised asking rents; check availability on the original listing. How we calculate

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Median rent in O'Fallon

From listings with a single price and a single bedroom count. Fewer than 20 such listings and we leave the figure out.

Studio
—
2 listings
1 bedroom
—
2 listings
2 bedrooms
$1,295
24 listings
3+ bedrooms
—
14 listings

Rentals in O'Fallon

See all 85 on the map →

Renting in O'Fallon: common questions

How many rentals are available in O'Fallon, IL?
85 rentals are listed in O'Fallon, IL on Redfin, Zillow and ApartmentHomeLiving as of October 16, 2026, after removing listings that appear on more than one site.
How are these rent prices calculated?
We collect active listings from Redfin, Zillow and ApartmentHomeLiving, remove duplicates across sites, and take the median of asking rents for listings with one price and one bedroom count. If fewer than 20 listings qualify for a bedroom size, we leave that figure out. Read the full methodology
How much income do I need to rent in O'Fallon, IL?
Many landlords ask for gross income of at least 3 times the monthly rent. For a median 2-bedroom at $1,295/month, that is about $3,885 a month, or $46,620 a year.
What is the cheapest city near O'Fallon, IL to rent in?
Among nearby cities we track, Belleville, IL has the lowest median 2-bedroom rent at $1,100/month, $195 less than O'Fallon.

Rent in cities near O'Fallon

All cities in Illinois · Cheapest places to rent in Illinois · Embed this data