Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

Selling Options

What's my home worth?
Compare selling options
Get an instant cash offer
Buy before you sell

Resources

How selling works
When should I sell?
Home selling tips
Pricing your home
What's worth fixing first
Find a seller's agent

Save search Advertise Sign In

Saved homes Saved searches Your tours Your inquiries Recently viewed Account settings

Registered offenders on the map

Show registered offenders

Registered offenders on the map

Show registered offenders

Safety & registry resources

Review official public-safety information for any area from these government sources:

U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
FBI: state sex-offender registry directory

O'Fallon, IL Homes for Sale | Realty.com

Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

Save search Advertise Sign In

Saved homes Saved searches Your tours Your inquiries Recently viewed Account settings

Rentals
Commercial

Registered offenders on the map

Show registered offenders

1 listing

Selling Options

What's my home worth?
Compare selling options
Get an instant cash offer
Buy before you sell

Resources

How selling works
When should I sell?
Home selling tips
Pricing your home
What's worth fixing first
Find a seller's agent

Homes for Sale in O'Fallon, IL

Homes for Sale in O'Fallon, IL

1 Listing

Homes for Sale in O'Fallon, IL

1 Listing

Price Reduced90Active
$1,750,000
6 bd · 8 ba · 8,418 sqft
115 Cobblestone Hills Road, O'Fallon, IL
Margaret Riley · Nester Realty

L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

© 2026 Realty.com. All rights reserved.PrivacyTermsCalifornia Privacy RightsAccessibilityLicensing

Your local brokerage

JJ

Jeffrey Jonas

Realty.com

Lic. #471.004966

Your local brokerage

JJ

Jeffrey Jonas

Realty.com

Lic. #471.004966

Listing data & MLS disclosures

MARIS MLS: Based on information submitted to the MLS GRID as of 2026-08-14 05:30:38 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

O'Fallon, IL community profile

Population: 31,290
Median income: $101,491
Housing units: 12,629
People per sq. mi.: 1,967.9
Area: 15.9 sq. mi.

Source: HJN community data

O'Fallon housing market

September 2026 · This period is still settling

Selling at 100.0% of asking price

Sales here are closing essentially at asking. MLS · 50 sales · as of Sep 28, 2026

Homes that sold · County records, as of Sep 9, 2026

Median sale price: $385,000$320,000–$482,500 typical range
Price per sq. ft.: $315
Sales: 21
Paid in cash: 9.5%

Homes on the market · MLS, as of Sep 27, 2026–Sep 28, 2026

Median list price: $448,500
Homes for sale: 82
Median days on market: 34 days

Price trend · Assessor repeat sales, as of Sep 30, 2026

Year-over-year: 8.9%

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 11, 2026

Median home size: 1,288 sq. ft.