| Statistic | Reportedincidents | /100k people | Fairfield/100k people | Montana/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,601 (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) | 505 (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) | 2,095 (estimate) | 1,834 | 1,917 |


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| Item | Fairfield | 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 |
| Choteau, MT | 1,878 | 175 | 726 | 901 |
| Simms, MT | 338 | 501 | 2,081 | 2,582 |
| Sun River, MT | 41 | 502 | 2,081 | 2,582 |
| Power, MT | 153 | 509 | 2,111 | 2,620 |
| Fairfield, MT | 690 | 505 | 2,095 | 2,600 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Beverly Shores, IN | 690 | 134 | 623 | 758 |
| Nuangola, PA | 690 | 233 | 1,384 | 1,618 |
| Piltzville, MT | 690 | 376 | 1,560 | 1,936 |
| McRae, AR | 690 | 162 | 972 | 1,135 |
| Avon, IL | 690 | 474 | 2,631 | 3,105 |
| Fairfield, MT | 690 | 505 | 2,095 | 2,600 |