Apartments for Rent in O'Fallon, IL

Prices and availability in O'Fallon, IL were last updated on 31 Aug 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 studio apartment in O'Fallon, IL is between $1,650 and $1,700.

The price range for a 1-bedroom apartment in O'Fallon, IL is between $1,471 and $2,250.

The price range for a 2-bedroom apartment in O'Fallon, IL is between $1,379 and $2,643.

The price range for a 3-bedroom apartment in O'Fallon, IL is between $1,471 and $2,935.

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 average age of rental buildings in O'Fallon is 20 years old, with 73% being newer apartment buildings completed since 2000. The average height of apartment buildings in the city is 3 stories, of which all are garden-style apartment communities, none are mid-sized buildings, and none are high-rises. These characteristics describe large-scale apartment communities of 50 apartments or more.

Studio apartments in O'Fallon are around 1% of rentals, while 1-bedroom floor plans represent 37% of the total stock. For those in search of larger rentals, 2-bedroom floorplans make up 58% of all rentals. More generous apartments with 3 bedrooms or more are also available in this city for those in search of more space.