| Statistic | Reportedincidents | /100k people | Marietta/100k people | Minnesota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 3,172 (estimate) | 1,964 | 2,281 |
| Murder | n/a | n/a | n/a | 3.1 | 5.7 |
| Rape | n/a | n/a | n/a | 35.6 | 38.0 |
| Robbery | n/a | n/a | n/a | 48.5 | 66.5 |
| Assault | n/a | n/a | n/a | 173.9 | 264.1 |
| Violent crime | n/a | n/a (estimate) | 422 (estimate) | 261 | 364 |
| Burglary | n/a | n/a | n/a | 183.4 | 250.7 |
| Theft | n/a | n/a | n/a | 1,252.0 | 1,347.2 |
| Vehicle theft | n/a | n/a | n/a | 267.0 | 318.7 |
| Property crime | n/a | n/a (estimate) | 2,750 (estimate) | 1,702 | 1,917 |


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| Item | Marietta | Minnesota | National |
| Law enforcement employees (officers & civilians) | n/a | 7,759 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 1.8 | 3.3 |
| State | Total offenders | Minnesota /100K | National /100K |
| Minnesota | 1,283 | 26 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Milbank, SD | 3,137 | 155 | 717 | 871 |
| Madison, MN | 1,647 | 123 | 800 | 923 |
| La Bolt, SD | 99 | 441 | 2,037 | 2,478 |
| Louisburg, MN | 27 | 337 | 2,197 | 2,534 |
| Gary, SD | 284 | 492 | 2,273 | 2,765 |
| Nassau, MN | 67 | 378 | 2,464 | 2,842 |
| Bellingham, MN | 266 | 396 | 2,580 | 2,976 |
| Marietta, MN | 167 | 422 | 2,750 | 3,172 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Richey, MT | 167 | 518 | 2,150 | 2,668 |
| Port Wing, WI | 167 | 332 | 1,398 | 1,731 |
| Cloverdale, OH | 167 | 350 | 2,069 | 2,419 |
| Sims, IL | 167 | 441 | 2,444 | 2,885 |
| Woodlawn Park, OK | 167 | 167 | 868 | 1,035 |
| Marietta, MN | 167 | 422 | 2,750 | 3,172 |