| Index | Interior | South Dakota | National |
| Median home price | $0 | $260,531 | $326,622 |
| Median rent asked | $0 | $1,032 | $1,444 |
| Avg. people per household | 2.4 | 2.4 | 2.6 |
| Owner occupied households | 96.0% | 67.8% | 63.6% |
| Renter occupied households | 4.0% | 32.2% | 36.4% |
| Population | Home Price | National Avg. | |
| Interior, SD | 49 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Ihlen, MN | 49 | $100,035 | 69% |
| Surprise, NE | 49 | $80,175 | 75% |
| Okaton, SD | 49 | $0 | 100% |
| Antelope, MT | 49 | $0 | 100% |
| Rockbridge, OH | 49 | $0 | 100% |
| Interior, SD | 49 | $0 | 100% |