What is the average apartment size in O'Fallon?

The average size for a O'Fallon, MO apartment is 963 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 Sep / 2025, the average rent in O'Fallon is $1,539 per month, a 1.88% increase from last year’s average of $1,510.

What is the average apartment size in O'Fallon?

The typical apartment in O'Fallon offers about 963 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 44% 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: October 20, 2025 | Source: RentCafe Market Analysis, Yardi Matrix, U.S. Census Bureau

Highlights

The average rent for an apartment in O'Fallon is $1,539, a 1.88% increase compared to the previous year, when the average rent was $1,510.

One-bedroom apartments provide 758 square feet for $1,339, balancing privacy and affordability.

Two-beedroom units at $1,601 offer 1,048 square feet, perfect for roommates or small families.

Three-bedroom apartments deliver maximum space (1,371 sq ft) for $2,100, suitable for larger households.

Average rent in O'Fallon, MO

Last updated: October 20, 2025

	Average Rent	Average Apartment Size
All Rentals	$1,539	963 sq. ft.
Studio	n/a	n/a
1 Bed	$1,339	758 sq. ft.
2 Beds	$1,601	1,048 sq. ft.
3 Beds	$2,100	1,371 sq. ft.

O'Fallon, MO rent trends

Rental prices in O'Fallon, MO have increased by 1.88% over the past year. The average rent moved from $1,510 to $1,539.

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

The largest share of rentals in O'Fallon, MO (44%) 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.

Access comprehensive real estate data and information on Yardi Matrix

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.