| Statistic | Reportedincidents | /100k people | Harrison/100k people | Montana/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | n/a (estimate) | 2,276 | 2,281 |
| Murder | n/a | n/a | n/a | 2.8 | 5.7 |
| Rape | n/a | n/a | n/a | 54.4 | 38.0 |
| Robbery | n/a | n/a | n/a | 24.1 | 66.5 |
| Assault | n/a | n/a | n/a | 360.7 | 264.1 |
| Violent crime | n/a | n/a (estimate) | n/a (estimate) | 442 | 364 |
| Burglary | n/a | n/a | n/a | 170.3 | 250.7 |
| Theft | n/a | n/a | n/a | 1,472.3 | 1,347.2 |
| Vehicle theft | n/a | n/a | n/a | 191.1 | 318.7 |
| Property crime | n/a | n/a (estimate) | n/a (estimate) | 1,834 | 1,917 |


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| Item | Harrison | 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 |
| Three Forks, MT | 1,977 | 139 | 575 | 713 |
| Whitehall, MT | 1,000 | 175 | 726 | 900 |
| Cardwell, MT | 107 | 491 | 2,037 | 2,527 |
| Willow Creek, MT | 216 | 495 | 2,054 | 2,550 |
| Pony, MT | 138 | 525 | 2,177 | 2,701 |
| Harrison, MT | 64 | n/a | n/a | n/a |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Sandyville, IA | 64 | 297 | 1,530 | 1,828 |
| Balta, ND | 64 | 369 | 2,680 | 3,049 |
| Allendale, MO | 64 | 511 | 2,334 | 2,846 |
| Beaver Bay, MN | 64 | 258 | 1,682 | 1,940 |
| Nashua, MN | 64 | 422 | 2,750 | 3,172 |
| Harrison, MT | 64 | n/a | n/a | n/a |