| Index | Allen | South Dakota | National |
| Median home price | $0 | $260,531 | $326,622 |
| Median rent asked | $905 | $1,032 | $1,444 |
| Avg. people per household | 3.6 | 2.4 | 2.6 |
| Owner occupied households | 0.0% | 67.8% | 63.6% |
| Renter occupied households | 100.0% | 32.2% | 36.4% |

| Population | Home Price | National Avg. | |
| Batesland, SD | 85 | $0 | 100% |
| Kyle, SD | 930 | $0 | 100% |
| Martin, SD | 1,193 | $135,720 | 58% |
| Allen, SD | 487 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Natchez, LA | 487 | $0 | 100% |
| Gordonville, MO | 487 | $313,308 | 4% |
| Declo, ID | 487 | $202,166 | 38% |
| Hepzibah, WV | 487 | $211,296 | 35% |
| Hollyvilla, KY | 487 | $200,989 | 38% |
| Allen, SD | 487 | $0 | 100% |