| Statistic | Reportedincidents | /100k people | Mount Vernon/100k people | South Dakota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,171 (estimate) | 1,968 | 2,281 |
| Murder | n/a | n/a | n/a | 2.9 | 5.7 |
| Rape | n/a | n/a | n/a | 50.3 | 38.0 |
| Robbery | n/a | n/a | n/a | 20.4 | 66.5 |
| Assault | n/a | n/a | n/a | 276.1 | 264.1 |
| Violent crime | n/a | n/a (estimate) | 386 (estimate) | 350 | 364 |
| Burglary | n/a | n/a | n/a | 222.1 | 250.7 |
| Theft | n/a | n/a | n/a | 1,151.4 | 1,347.2 |
| Vehicle theft | n/a | n/a | n/a | 244.9 | 318.7 |
| Property crime | n/a | n/a (estimate) | 1,785 (estimate) | 1,618 | 1,917 |


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| Item | Mount Vernon | South Dakota | National |
| Law enforcement employees (officers & civilians) | n/a | 995 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 2.2 | 3.3 |
| State | Total offenders | South Dakota /100K | National /100K |
| South Dakota | n/a | n/a | n/a |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Plankinton, SD | 709 | 399 | 1,844 | 2,243 |
| Ethan, SD | 328 | 426 | 1,971 | 2,398 |
| Mitchell, SD | 15,599 | 326 | 2,165 | 2,491 |
| Stickney, SD | 265 | 473 | 2,185 | 2,657 |
| Mount Vernon, SD | 500 | 386 | 1,785 | 2,171 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| De Beque, CO | 500 | 651 | 3,953 | 4,604 |
| Vernon, MI | 500 | 277 | 692 | 968 |
| Fairgrove, MI | 500 | 646 | 2,185 | 2,831 |
| Enterprise, MS | 500 | 188 | 1,468 | 1,656 |
| Garcon Point, FL | 500 | 196 | 1,023 | 1,218 |
| Mount Vernon, SD | 500 | 386 | 1,785 | 2,171 |