| Index | Duncan | Iowa | National |
| Median home price | $0 | $132,800 | $184,700 |
| Median rent asked | $0 | $715 | $949 |
| Avg. people per household | 0.8 | 2.4 | 2.6 |
| Owner occupied households | 100.0% | 71.1% | 63.6% |
| Renter occupied households | 0.0% | 28.9% | 36.4% |
| Population | Home Price | National Avg. | |
| Hutchins, IA | 31 | $0 | 100% |
| Hayfield, IA | 56 | $0 | 100% |
| Miller, IA | 30 | $0 | 100% |
| Corwith, IA | 222 | $35,000 | 81% |
| Goodell, IA | 112 | $43,300 | 77% |
| Duncan, IA | 102 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Goodwin, SD | 102 | $88,000 | 52% |
| Brutus, MI | 102 | $187,500 | 2% |
| Dawn, MO | 102 | $0 | 100% |
| Phillipsville, CA | 102 | $0 | 100% |
| Marrowbone, KY | 102 | $85,900 | 53% |
| Duncan, IA | 102 | $0 | 100% |
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