| Index | O'Fallon | Missouri | National |
| Median home price | $421,191 | $249,551 | $326,622 |
| Median rent asked | $1,749 | $1,140 | $1,444 |
| Avg. people per household | 2.6 | 2.4 | 2.6 |
| Owner occupied households | 82.7% | 66.8% | 63.6% |
| Renter occupied households | 17.3% | 33.2% | 36.4% |

| Population | Home Price | National Avg. | |
| Champ, MO | 3 | $0 | 100% |
| Defiance, MO | 70 | $0 | 100% |
| Fountain N' Lakes, MO | 241 | $64,249 | 80% |
| Brussels, IL | 117 | $169,460 | 48% |
| Old Monroe, MO | 177 | $227,229 | 30% |
| O'Fallon, MO | 90,020 | $421,191 | 29% |
| Population | Home Price | National Avg. | |
| Newport Beach, CA | 90,043 | $3,595,399 | 1,001% |
| Waukegan, IL | 90,063 | $251,387 | 23% |
| Citrus Heights, CA | 90,373 | $588,508 | 80% |
| Ogden, UT | 90,520 | $349,704 | 7% |
| Newton, MA | 90,578 | $1,670,085 | 411% |
| O'Fallon, MO | 90,020 | $421,191 | 29% |