Homes under $500K in O Fallon, IL

52 for sale · 155 homes listed · Updated September 27, 2026 · Page 3 of 4

• 428 marbleton circle, O Fallon 62269 Active Under Contract $484,900 · 4 bd · 3 ba · 3,400 sqft
• 1328 three rivers drive, O Fallon 62269 Active Under Contract $289,900 · 3 bd · 3 ba · 1,975 sqft
• 423 highland peak court, O Fallon 62269 Active Under Contract $380,000 · 3 bd · 4 ba · 2,069 sqft
• 1334 pepperidge drive, O Fallon 62269 Active Under Contract $339,900 · 3 bd · 2 ba · 2,256 sqft
• 305 edward street, O Fallon 62269 Active Under Contract $254,900 · 3 bd · 2 ba · 2,064 sqft
• 410 east jefferson street, O Fallon 62269 Active Under Contract $315,000 · 3 bd · 3 ba · 1,850 sqft
• 102 east brittany lane, O Fallon 62269 Active Under Contract $377,900 · 4 bd · 3 ba · 2,729 sqft
• 1010 woods way, O Fallon 62269 Active Under Contract $409,900 · 4 bd · 4 ba · 3,200 sqft
• 1314 terrace green lane, O Fallon 62269 Active Under Contract $264,900 · 3 bd · 2 ba · 1,282 sqft
• 208 east madison street, O Fallon 62269 Active Under Contract $125,000 · 3 bd · 2 ba · 1,525 sqft
• 120 delmar avenue, O Fallon 62269 Active Under Contract $259,900 · 3 bd · 1 ba · 1,992 sqft
• 1513 keck ridge drive, O Fallon 62269 Active Under Contract $365,000 · 3 bd · 4 ba · 2,590 sqft
• 305 marilyn drive, O Fallon 62269 Active Under Contract $230,000 · 4 bd · 2 ba · 1,952 sqft
• 1250 elisabeth drive, O Fallon 62269 Active Under Contract $385,000 · 4 bd · 4 ba · 3,656 sqft
• 930 benjamin drive, O Fallon 62269 Active Under Contract $369,000 · 4 bd · 4 ba · 3,233 sqft
• 314 east 3rd street, O Fallon 62269 Active Under Contract $54,900 · 2 bd · 1 ba · 728 sqft
• 1700 saint andrews, O Fallon 62269 Active Under Contract $479,900 · 5 bd · 3 ba · 3,992 sqft
• 1112 danzig drive, O Fallon 62269 Active Under Contract $325,000 · 4 bd · 3 ba · 2,128 sqft
• 953 pacific crossing drive, O Fallon 62269 Active Under Contract $349,900 · 4 bd · 3 ba · 2,112 sqft
• 802 cypress court, O Fallon 62269 Active Under Contract $95,000 · 3 bd · 1 ba · 1,104 sqft
• 1221 illini drive, O Fallon 62269 Active Under Contract $389,900 · 4 bd · 4 ba · 3,199 sqft
• 310 emily drive, O Fallon 62269 Active Under Contract $329,900 · 4 bd · 3 ba · 2,680 sqft
• 900 belpre drive, O Fallon 62269 Active Under Contract $377,500 · 4 bd · 3 ba · 2,646 sqft
• 905 phillip court, O Fallon 62269 Active Under Contract $409,900 · 4 bd · 3 ba · 2,997 sqft
• 212 whitehall drive, O Fallon 62269 Active Under Contract $219,900 · 3 bd · 2 ba · 1,572 sqft
• 507 south smiley street, O Fallon 62269 Active Under Contract $235,000 · 3 bd · 2 ba · 1,826 sqft
• 923 victoria lane, O Fallon 62269 Active Under Contract $320,000 · 4 bd · 4 ba · 1,900 sqft
• 429 ponderosa avenue 7, O Fallon 62269 Active Under Contract $139,000 · 2 bd · 2 ba · 1,100 sqft
• 1232 hillock lane, O Fallon 62269 Active Under Contract $289,900 · 4 bd · 3 ba · 1,700 sqft
• 208 west state street, O Fallon 62269 Active Under Contract $355,000 · 3 bd · 3 ba · 1,600 sqft
• 1249 farmington drive, O Fallon 62269 Active Under Contract $389,000 · 4 bd · 4 ba · 3,133 sqft
• 1122 buran drive, O Fallon 62269 Active Under Contract $395,000 · 4 bd · 4 ba · 2,824 sqft
• 953 benjamin drive, O Fallon 62269 Active Under Contract $385,000 · 4 bd · 4 ba · 3,090 sqft
• 1579 meade drive, O Fallon 62269 Active Under Contract $400,000 · 3 bd · 3 ba · 1,869 sqft
• 832 bridgeway drive, O Fallon 62269 Active Under Contract $389,900 · 4 bd · 3 ba · 2,451 sqft
• 427 west 3rd street, O Fallon 62269 Active Under Contract $199,900 · 3 bd · 2 ba · 1,456 sqft
• 1027 shadow ridge crossing, O Fallon 62269 Active Under Contract $315,000 · 4 bd · 2 ba · 2,539 sqft
• 1126 east 3rd street, O Fallon 62269 Active Under Contract $385,000 · 4 bd · 3 ba · 3,008 sqft
• 102 pheasant run, O Fallon 62269 Active Under Contract $379,900 · 4 bd · 3 ba · 2,908 sqft
• 1305 bradstreet drive, O Fallon 62269 Active Under Contract $475,000 · 4 bd · 3 ba · 2,815 sqft
• 712 country oaks lane, O Fallon 62269 Active Under Contract $215,000 · 2 bd · 2 ba · 1,136 sqft
• 950 whitechapel drive, O Fallon 62269 Active Under Contract $255,000 · 3 bd · 3 ba · 1,965 sqft
• 621 east wesley drive, O Fallon 62269 Off market since Sep 2026 $429,000 · 4 bd · 3 ba · 3,418 sqft
• 485 bandmour place, O Fallon 62269 Off market since Aug 2026 $339,000 · 3 bd · 3 ba · 2,480 sqft
• 953 benjamin drive, O Fallon 62269 Off market since Aug 2026 $385,000 · 4 bd · 4 ba · 3,090 sqft
• 118 alice drive, O Fallon 62269 Off market since Aug 2026 $244,500 · 3 bd · 2 ba · 1,454 sqft
• 656 fairway wood drive, O Fallon 62269 Off market since Sep 2026 $489,900 · 4 bd · 3 ba · 2,584 sqft
• 6992 milburn estates drive, O Fallon 62269 Off market since Sep 2026 $485,000 · 4 bd · 3 ba · 2,624 sqft
• 1805 creekview drive, O Fallon 62269 Off market since Sep 2026 $92,000 · 2 bd · 2 ba · 1,056 sqft
• 728 longfellow drive, O Fallon 62269 Off market since Jul 2026 $460,000 · 4 bd · 4 ba · 2,705 sqft