| Index | Big Arm | Montana | National |
| Median home price | $0 | $364,175 | $326,622 |
| Median rent asked | $0 | $1,111 | $1,444 |
| Avg. people per household | 0.8 | 2.4 | 2.6 |
| Owner occupied households | 100.0% | 67.2% | 63.6% |
| Renter occupied households | 0.0% | 32.8% | 36.4% |

| Population | Home Price | National Avg. | |
| Elmo, MT | 261 | $0 | 100% |
| Kings Point, MT | 210 | $0 | 100% |
| Rollins, MT | 162 | $0 | 100% |
| Turtle Lake, MT | 127 | $0 | 100% |
| Jette, MT | 165 | $0 | 100% |
| Big Arm, MT | 91 | $0 | 100% |
| Population | Home Price | National Avg. | |
| Costilla, NM | 91 | $0 | 100% |
| Opal, WY | 91 | $53,635 | 84% |
| Beaver, AK | 91 | $60,136 | 82% |
| Smithville, OK | 91 | $0 | 100% |
| Mount Moriah, MO | 91 | $71,468 | 78% |
| Big Arm, MT | 91 | $0 | 100% |