| Statistic | Reportedincidents | /100k people | Big Arm/100k people | Montana/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | n/a (estimate) | 2,041 | 2,119 |
| Murder | n/a | n/a | n/a | 2.7 | 5.0 |
| Rape | n/a | n/a | n/a | 59.2 | 37.5 |
| Robbery | n/a | n/a | n/a | 19.1 | 60.6 |
| Assault | n/a | n/a | n/a | 342.5 | 256.1 |
| Violent crime | n/a | n/a (estimate) | n/a (estimate) | 424 | 359 |
| Burglary | n/a | n/a | n/a | 167.2 | 229.2 |
| Theft | n/a | n/a | n/a | 1,286.0 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 164.0 | 258.8 |
| Property crime | n/a | n/a (estimate) | n/a (estimate) | 1,617 | 1,760 |


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| Item | Big Arm | Montana | National |
| Law enforcement employees (officers & civilians) | n/a | 872 | 558,732 |
| Police officers & civilians /1000 residents | n/a | n/a | 3.3 |
| State | Total offenders | Montana /100K | National /100K |
| Montana | 2,923 | 291 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Lindisfarne, MT | 465 | 171 | 653 | 825 |
| Lake Mary Ronan, MT | 45 | 199 | 759 | 959 |
| Finley Point, MT | 486 | 207 | 790 | 997 |
| Dayton, MT | 111 | 230 | 877 | 1,107 |
| Pablo, MT | 2,032 | 253 | 967 | 1,220 |
| Polson, MT | 5,033 | 988 | 3,120 | 4,107 |
| Big Arm, MT | 89 | n/a | n/a | n/a |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Antimony, UT | 89 | 233 | 1,424 | 1,657 |
| Fair Oaks, OK | 89 | 355 | 1,662 | 2,018 |
| Petronila, TX | 89 | 228 | 1,197 | 1,425 |
| Blackburn, OK | 89 | 621 | 2,905 | 3,527 |
| Henry, NE | 89 | 262 | 1,939 | 2,201 |
| Big Arm, MT | 89 | n/a | n/a | n/a |