| Index | Castlewood | South Dakota | National |
| Median home price | $251,207 | $260,531 | $326,622 |
| Median rent asked | $1,028 | $1,032 | $1,444 |
| Avg. people per household | 2.2 | 2.4 | 2.6 |
| Owner occupied households | 85.7% | 67.8% | 63.6% |
| Renter occupied households | 14.3% | 32.2% | 36.4% |

| Population | Home Price | National Avg. | |
| Goodwin, SD | 104 | $160,751 | 51% |
| Hayti, SD | 407 | $160,916 | 51% |
| Estelline, SD | 888 | $177,528 | 46% |
| Lake Norden, SD | 548 | $215,568 | 34% |
| Kranzburg, SD | 206 | $217,727 | 33% |
| Castlewood, SD | 599 | $251,207 | 23% |
| Population | Home Price | National Avg. | |
| Parker's Crossroads, TN | 599 | $232,356 | 29% |
| De Witt, NE | 599 | $141,560 | 57% |
| Laddonia, MO | 599 | $105,507 | 68% |
| Verden, OK | 599 | $104,272 | 68% |
| Patoka, IL | 599 | $106,307 | 67% |
| Castlewood, SD | 599 | $251,207 | 23% |