| Index | Rock City | Illinois | National |
| Median home price | $189,406 | $308,565 | $326,622 |
| Median rent asked | $1,226 | $1,374 | $1,444 |
| Avg. people per household | 2.5 | 2.6 | 2.6 |
| Owner occupied households | 77.5% | 66.0% | 63.6% |
| Renter occupied households | 22.5% | 34.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Freeport, IL | 24,837 | $124,618 | 62% |
| Ridott, IL | 174 | $154,098 | 53% |
| Dakota, IL | 741 | $157,578 | 52% |
| German Valley, IL | 579 | $168,038 | 49% |
| Cedarville, IL | 644 | $169,353 | 48% |
| Rock City, IL | 363 | $189,406 | 42% |
| Population | Home Price | National Avg. | |
| Ballantine, MT | 363 | $383,536 | 17% |
| Grand Detour, IL | 363 | $393,323 | 20% |
| Spottsville, KY | 363 | $167,394 | 49% |
| Northmoor, MO | 363 | $218,273 | 33% |
| Cotton City, NM | 363 | $124,300 | 62% |
| Rock City, IL | 363 | $189,406 | 42% |