| Index | Grand Detour | Illinois | National |
| Median home price | $393,323 | $308,565 | $326,622 |
| Median rent asked | $0 | $1,374 | $1,444 |
| Avg. people per household | 2.3 | 2.6 | 2.6 |
| Owner occupied households | 93.4% | 66.0% | 63.6% |
| Renter occupied households | 6.6% | 34.0% | 36.4% |

| Population | Home Price | National Avg. | |
| Rock Falls, IL | 9,152 | $127,515 | 61% |
| Nelson, IL | 138 | $131,934 | 60% |
| Harmon, IL | 150 | $150,628 | 54% |
| Franklin Grove, IL | 975 | $153,264 | 53% |
| Amboy, IL | 2,539 | $153,438 | 53% |
| Grand Detour, IL | 363 | $393,323 | 20% |
| Population | Home Price | National Avg. | |
| Cotton City, NM | 363 | $124,300 | 62% |
| Hewlett Bay Park, NY | 363 | $3,538,443 | 983% |
| McDermott, OH | 363 | $82,819 | 75% |
| Ballantine, MT | 363 | $383,536 | 17% |
| Spottsville, KY | 363 | $167,394 | 49% |
| Grand Detour, IL | 363 | $393,323 | 20% |