| Index | Castlewood | South Dakota | National |
| Median home price | $139,500 | $146,700 | $184,700 |
| Median rent asked | $670 | $676 | $949 |
| 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 | 102 | $88,000 | 52% |
| Hayti, SD | 391 | $90,900 | 51% |
| Estelline, SD | 858 | $97,300 | 47% |
| Lake Norden, SD | 531 | $118,200 | 36% |
| Kranzburg, SD | 199 | $118,200 | 36% |
| Castlewood, SD | 582 | $139,500 | 24% |
| Population | Home Price | National Avg. | |
| Montcalm, WV | 582 | $34,000 | 82% |
| Cedar Rapids, NE | 582 | $65,700 | 64% |
| Sulphur Rock, AR | 582 | $106,900 | 42% |
| Tovey, IL | 582 | $66,100 | 64% |
| Avoca, WI | 582 | $77,700 | 58% |
| Castlewood, SD | 582 | $139,500 | 24% |
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