| Statistic | Reportedincidents | /100k people | Seneca/100k people | South Dakota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,567 (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) | 477 (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) | 2,090 (estimate) | 1,586 | 1,760 |


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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 | 471 | 2,065 | 2,537 |
| Lebanon, SD | 48 | 476 | 2,084 | 2,559 |
| Tolstoy, SD | 34 | 524 | 2,295 | 2,819 |
| Seneca, SD | 39 | 477 | 2,090 | 2,567 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Varina, IA | 39 | 352 | 1,881 | 2,233 |
| Edgewood, CA | 39 | 629 | 2,690 | 3,320 |
| Ashland, OK | 39 | 618 | 2,892 | 3,510 |
| Guernsey, IA | 39 | 313 | 1,670 | 1,983 |
| Speed, KS | 39 | 506 | 2,255 | 2,761 |
| Seneca, SD | 39 | 477 | 2,090 | 2,567 |