| Statistic | Reportedincidents | /100k people | Spencer/100k people | South Dakota/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,219 (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) | 412 (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) | 1,807 (estimate) | 1,586 | 1,760 |


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| Item | Spencer | 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 |
| Salem, SD | 1,183 | 142 | 624 | 767 |
| Alexandria, SD | 766 | 412 | 1,803 | 2,215 |
| Emery, SD | 510 | 430 | 1,884 | 2,313 |
| Canistota, SD | 663 | 464 | 2,031 | 2,494 |
| Bridgewater, SD | 322 | 466 | 2,040 | 2,506 |
| Fulton, SD | 138 | 474 | 2,077 | 2,551 |
| Canova, SD | 137 | 585 | 2,563 | 3,148 |
| Spencer, SD | 132 | 412 | 1,807 | 2,219 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Blockton, IA | 132 | 341 | 1,821 | 2,162 |
| Stockholm, SD | 132 | 446 | 1,955 | 2,401 |
| Narka, KS | 132 | 662 | 2,949 | 3,611 |
| Otter Creek, FL | 132 | 394 | 2,094 | 2,488 |
| Havelock, IA | 132 | 350 | 1,869 | 2,220 |
| Spencer, SD | 132 | 412 | 1,807 | 2,219 |