Skip to Main Content
Close IconHouzeo

Do Real Estate on the Go!

OPEN APP

Homes for Sale Under 400K in O'fallon, MO

317 Homes for Sale

Sort by:

Showing 127 - 168 of 317 homes for sale in O'Fallon, MO

Don't miss out on new listings — and get instant email alerts!

Do Real Estate on the Go!

Find your dream home, receive real-time updates, and many more!

OPEN APP
Mortgage Calculator
How Much House Can I Afford
How to Buy a House
Best Places to Live in Missouri
Safest Places to Live in Missouri
Expensive Places to Live in Missouri
Cheapest Places to Live in Missouri
  • mls-imgIDX Logo
    Based on information from Mid America Regional Information Systems, Inc. through Nov 1, 2026, 5:01 AM. 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. Some IDX listings have been excluded from this website. Properties displayed may be listed or sold by various participants in the MLS. Property data presented reflect information otherwise available from public records. The REALTOR® providing this information may not have represented the buyer or seller in some or all of the transactions.
    IDX information is provided exclusively for consumers’ personal noncommercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, that the data is deemed reliable but is not guaranteed by MLS GRID, and that the use of the MLS GRID Data may be subject to an end user license agreement prescribed by the Member Participant’s applicable MLS if any and as amended from time to time. © 2026 Mid America Regional Information Systems, Inc. All Rights Reserved.
Click to see all homes
static map image
Homes Available icon

317

Homes Available

Median List Price icon

$ NaN

Median List Price

Avg on Market icon

- Days

Avg on Market