What is the average apartment size in O'Fallon?

The average size for a O'Fallon, MO apartment is 968 square feet, but this number varies greatly depending on unit type, with cheap and luxury alternatives for houses and apartments alike. Studio apartments are the smallest and most affordable, 1-bedroom apartments are closer to the average, while 2-bedroom apartments and 3-bedroom apartments offer a more generous square footage.

What is the average rent in O'Fallon?

As of Mar / 2026, the average rent in O'Fallon is $1,540 per month, a 2.38% increase from last years average of $1,504.

What is the average apartment size in O'Fallon?

The typical apartment in O'Fallon offers about 968 sq. ft. square feet of living space, though actual sizes vary depending on layout and amenities.

O'Fallon, MO Rental Market Trends

Q: What's the typical rent budget in O'Fallon?

The typical rent budget in O'Fallon ranges from $1,001 to $1,500 per month, with 43% of rentals in this range.

Q: Do most people rent or own in O'Fallon?

In O'Fallon, 19% of households rent while 81% own their homes, based on the latest U.S. Census data.

Last updated: April 22, 2026 | Source: RentCafe Market Analysis, Yardi Matrix, U.S. Census Bureau

Highlights

The average rent for an apartment in O'Fallon is $1,540, a 2.38% increase compared to the previous year, when the average rent was $1,504.

One-bedroom apartments provide 759 square feet for $1,354, balancing privacy and affordability.

Two-beedroom units at $1,574 offer 1,047 square feet, perfect for roommates or small families.

Three-bedroom apartments deliver maximum space (1,368 sq ft) for $2,100, suitable for larger households.

Average rent in O'Fallon, MO

Last updated: April 22, 2026

	Average Rent	Average Apartment Size
All Rentals	$1,540	968 sq. ft.
Studio	n/a	n/a
1 Bed	$1,354	759 sq. ft.
2 Beds	$1,574	1,047 sq. ft.
3 Beds	$2,100	1,368 sq. ft.

O'Fallon, MO rent trends

Rental prices in O'Fallon, MO have increased by 2.38% over the past year. The average rent moved from $1,504 to $1,540.

What's the typical rent budget in O'Fallon, MO?

The largest share of rentals in O'Fallon, MO (43%) fall between $1,001-$1,500 per month. This suggests that most people succesfully find suitable apartments within this price.

Do most people rent or own in O'Fallon, MO?

7,032 or 19% of the households in O'Fallon, MO are renter-occupied while 30,492 or 81% are owner-occupied.

How O'Fallon Compares to Other Cities

City	Average Rent
O'Fallon	$1,540
Kansas City	$1,330
Saint Louis	$1,423
Florissant	$1,042
Saint Charles	$1,472
Springfield	$1,121
University City	$1,578
Independence	$1,177
Ballwin	$1,458
Jennings	$868
Raymore	$1,467
Creve Coeur	$1,460
Saint Peters	$1,558
Lake Saint Louis	$1,545
Wentzville	$1,534
Chesterfield, MO	$1,651
Ferguson, MO	$915
Olivette, MO	$1,801
Hazelwood, MO	$1,064
Maryland Heights, MO	$1,233
Valley Park, MO	$1,544

Where this data comes from

The rental statistics on this page were compiled by RentCafe.com, a nationwide apartment search website trusted by millions of renters to find apartments and houses for rent throughout the U.S.

Rent prices, trends, and apartment sizes were calculated based on data from our sister company, Yardi Matrix, an apartment market intelligence solution that covers approximately 90% of the U.S. metro area population. The data includes comprehensive information on all O'Fallon apartment buildings with 50 or more units, totaling 23.5 million apartments across 181 U.S. markets.

Housing composition data was sourced from the U.S. Census Bureau, using the most recently available information by tenure.