Apartments for Rent in O'Fallon, MO

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

The best apartments in O'Fallon, MO are: Westchester Village, Avenue64 Apartments, Enclave at Winghaven, Bramblett Hills and Casalon Parkway Apartments.

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 $1,975.

The price range for a 2-bedroom apartment in O'Fallon, MO is between $1,133 and $2,575.

The price range for a 3-bedroom apartment in O'Fallon, MO is between $1,600 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.

Rental apartments in O'Fallon come in a range of sizes and floorplans. Studio apartments represent 1.0% 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 35% of the total apartments in the city, while 2-bedroom floorplans represent around 56% 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.