Apartments for Rent in O'Fallon, IL

Prices and availability in O'Fallon, IL were last updated on 30 Jun 2026.

The best apartments in O'Fallon, IL are: Thirteen01 at Hartman Lakes, The Oasis at Hartman Lakes, Storyboard on Park Entrance, Storyboard on Carol Ann and Storyboard on Sugar Pine.

The average rent in O'Fallon, IL is $1,670.

The price range for a 1-bedroom apartment in O'Fallon, IL is between $1,475 and $2,412.

The price range for a 2-bedroom apartment in O'Fallon, IL is between $1,095 and $2,899.

The price range for a 3-bedroom apartment in O'Fallon, IL is between $1,095 and $2,905.

In O'Fallon, 29% of the residents are renting compared to 71% owning a home, according to data from the U.S. Census Bureau. Large-scale apartment buildings with more than 50 units represent 10% of O'Fallon's rentals, 69% are small-scale complexes with under 50 units, and 17% are single-family rentals.

The age and size of multifamily buildings are among the most visible characteristics of the rental market in a city. In this case, the apartment buildings in O'Fallon are about 20 years old, on average. Of these, 73% have been built since 2000, representing the newer options on the market and typically offering more amenities. Rental buildings in the city have an average height of 3 stories. About all of the rental communities here are low-rise, garden-style communities, none are mid-rises, and none are high-rise buildings. These are true especially for large-scale multifamily buildings with over 50 apartments.

Rental apartments in O'Fallon come in a range of sizes and floorplans. Studio apartments represent 1% of units for rent, ideal for singles, renters on a budget and people who value central locations more than space. Rentals with 1-bedroom floorplans make up 37% of the total apartments in the city, while 2-bedroom floorplans represent around 58% of all rentals in O'Fallon. The rest are larger floorplans with 3 bedrooms or more, typically preferred by families, larger households or roommates sharing space.