What's the average rent in O Fallon, IL?

Rental Market Trends in O Fallon, IL

SOURCE: TRULIA DATA

Rental market highlights

As of August 2026, the average rent in O Fallon, IL is $1,808 per month, which is 8% lower than the national average rent of $1,965 per month.

AVERAGE RENT

$1,808

6.3%$108 increase month-over-month

13.3%$213 increase year-over-year

AVAILABLE RENTALS

APARTMENTS

$1,453

HOUSES

$2,100

TOWNHOUSES

$1,300

As of August 2026, townhomes are the most affordable rental option in O Fallon, IL at $1,300 per month, while houses are the most expensive at $2,100 per month. Apartments average $1,453 per month, offering a mid-range alternative for renters.

Average rent by number of bedrooms

Floor plan type	Average rent
1 Bedroom	$1,641
2 Bedrooms	$1,450
3 Bedrooms	$1,987
4 Bedrooms	$2,575
All	$1,808

As of August 2026, the average rent for a 1 bedroom rental in O Fallon, IL is $1,641 per month, followed by $1,450 for a 2 bedroom rental, $1,987 for a 3 bedroom rental, and $2,575 for a 4 bedroom rental.

Floor plan type	Average rent
1 Bedroom	—
2 Bedrooms	$1,295
3 Bedrooms	$1,967
4 Bedrooms	—
All	$1,300

As of August 2026, the average rent for a 2 bedroom townhome in O Fallon, IL is $1,295 per month, followed by $1,967 for a 3 bedroom townhome.

Floor plan type	Average rent
1 Bedroom	$1,055
2 Bedrooms	$1,450
3 Bedrooms	$1,950
4 Bedrooms	$3,850
All	$1,550

As of August 2026, the average rent for a 1 bedroom apartment in O Fallon, IL is $1,055 per month, followed by $1,450 for a 2 bedroom apartment, $1,950 for a 3 bedroom apartment, and $3,850 for a 4 bedroom apartment.

Floor plan type	Average rent
1 Bedroom	—
2 Bedrooms	$1,250
3 Bedrooms	$2,095
4 Bedrooms	$2,575
All	$2,100

As of August 2026, the average rent for a 2 bedroom house in O Fallon, IL is $1,250 per month, followed by $2,095 for a 3 bedroom house, and $2,575 for a 4 bedroom house.