| Statistic | Reportedincidents | /100k people | Seneca/100k people | South Dakota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,593 (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) | 461 (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) | 2,132 (estimate) | 1,618 | 1,917 |


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| Item | Seneca | 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 |
| Hoven, SD | 313 | 456 | 2,107 | 2,563 |
| Lebanon, SD | 48 | 460 | 2,126 | 2,585 |
| Tolstoy, SD | 34 | 507 | 2,342 | 2,848 |
| Seneca, SD | 39 | 461 | 2,132 | 2,593 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Varina, IA | 39 | 406 | 2,090 | 2,496 |
| Edgewood, CA | 39 | 658 | 3,011 | 3,669 |
| Guernsey, IA | 39 | 360 | 1,855 | 2,216 |
| Speed, KS | 39 | 496 | 2,414 | 2,909 |
| Unity, OR | 39 | 432 | 3,435 | 3,867 |
| Seneca, SD | 39 | 461 | 2,132 | 2,593 |