| Index | Marietta | Illinois | National |
| Median home price | $0 | $308,565 | $326,622 |
| Median rent asked | $0 | $1,374 | $1,444 |
| Avg. people per household | 0.9 | 2.6 | 2.6 |
| Owner occupied households | 97.0% | 66.0% | 63.6% |
| Renter occupied households | 3.0% | 34.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Bardolph, IL | 286 | $60,666 | 81% |
| Ellisville, IL | 100 | $64,041 | 80% |
| Avon, IL | 711 | $85,305 | 74% |
| Vermont, IL | 767 | $85,353 | 74% |
| London Mills, IL | 334 | $85,590 | 74% |
| Marietta, IL | 63 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Beaulieu, MN | 63 | $144,643 | 56% |
| Quinn, SD | 63 | $0 | 100% |
| Esbon, KS | 63 | $66,293 | 80% |
| Olivet, KS | 63 | $131,261 | 60% |
| Mount Hebron, CA | 63 | $0 | 100% |
| Marietta, IL | 63 | $0 | 100% |