Apartments for Rent in O'Fallon, MO

Prices and availability in O'Fallon, MO were last updated on 13 Sep 2026.

The best apartments in O'Fallon, MO are: Casalon Parkway Apartments, Westchester Village, Bramblett Hills, Thornwood Apartments and Enclave at Winghaven.

The average rent in O'Fallon, MO is $1,483.

The price range for a 1-bedroom apartment in O'Fallon, MO is between $988 and $1,907.

The price range for a 2-bedroom apartment in O'Fallon, MO is between $1,112 and $2,575.

The price range for a 3-bedroom apartment in O'Fallon, MO is between $1,400 and $2,949.

In O'Fallon 18% of the housing is rented out compared to 82% of homes are owned, according to the most recent Census Bureau estimates. 10% of O'Fallon's apartments are found in large buildings of 50 units or more, 59% are located in smaller apartment complexes with less than 50 units, and 24% 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, 78% 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.

Studio apartments in O'Fallon are around 1.0% of rentals, while 1-bedroom floor plans represent 35% of the total stock. For those in search of larger rentals, 2-bedroom floorplans make up 56% of all rentals. More generous apartments with 3 bedrooms or more are also available in this city for those in search of more space.