| Statistic | Reportedincidents | /100k people | Grenville/100k people | South Dakota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | n/a (estimate) | 1,948 | 2,119 |
| Murder | n/a | n/a | n/a | 4.7 | 5.0 |
| Rape | n/a | n/a | n/a | 51.5 | 37.5 |
| Robbery | n/a | n/a | n/a | 22.6 | 60.6 |
| Assault | n/a | n/a | n/a | 283.6 | 256.1 |
| Violent crime | n/a | n/a (estimate) | n/a (estimate) | 362 | 359 |
| Burglary | n/a | n/a | n/a | 194.7 | 229.2 |
| Theft | n/a | n/a | n/a | 1,195.5 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 195.9 | 258.8 |
| Property crime | n/a | n/a (estimate) | n/a (estimate) | 1,586 | 1,760 |


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| Item | Grenville | 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 |
| Webster, SD | 1,681 | 148 | 647 | 795 |
| Roslyn, SD | 221 | 444 | 1,947 | 2,391 |
| Ortley, SD | 58 | 500 | 2,192 | 2,693 |
| Waubay, SD | 530 | 513 | 2,249 | 2,762 |
| Grenville, SD | 71 | n/a | n/a | n/a |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Regina, NM | 71 | 896 | 3,437 | 4,332 |
| Santiago, WA | 71 | 443 | 3,351 | 3,794 |
| Brooksburg, IN | 71 | 437 | 1,924 | 2,361 |
| Flemington, MO | 71 | 747 | 3,137 | 3,883 |
| Hillsdale, OK | 71 | 493 | 2,307 | 2,800 |
| Grenville, SD | 71 | n/a | n/a | n/a |