| Statistic | Reportedincidents | /100k people | Guernsey/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 1,983 (estimate) | 1,540 | 2,119 |
| Murder | n/a | n/a | n/a | 2.1 | 5.0 |
| Rape | n/a | n/a | n/a | 35.2 | 37.5 |
| Robbery | n/a | n/a | n/a | 18.7 | 60.6 |
| Assault | n/a | n/a | n/a | 187.2 | 256.1 |
| Violent crime | n/a | n/a (estimate) | 313 (estimate) | 243 | 359 |
| Burglary | n/a | n/a | n/a | 199.1 | 229.2 |
| Theft | n/a | n/a | n/a | 962.6 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 135.1 | 258.8 |
| Property crime | n/a | n/a (estimate) | 1,670 (estimate) | 1,297 | 1,760 |


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| Item | Guernsey | Iowa | National |
| Law enforcement employees (officers & civilians) | n/a | 3,827 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 1.8 | 3.3 |
| State | Total offenders | Iowa /100K | National /100K |
| Iowa | 6,040 | 205 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Montezuma, IA | 1,490 | 94 | 503 | 598 |
| Holiday Lake, IA | 330 | 98 | 524 | 622 |
| Brooklyn, IA | 1,677 | 99 | 528 | 627 |
| Marengo, IA | 2,407 | 167 | 1,295 | 1,463 |
| Millersburg, IA | 181 | 258 | 1,375 | 1,632 |
| North English, IA | 957 | 289 | 1,544 | 1,833 |
| Gibson, IA | 30 | 291 | 1,554 | 1,845 |
| Guernsey, IA | 39 | 313 | 1,670 | 1,983 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Edgewood, CA | 39 | 629 | 2,690 | 3,320 |
| Irwin, IL | 39 | 288 | 1,711 | 1,999 |
| Rogers, ND | 39 | 350 | 2,316 | 2,666 |
| Haigler Creek, AZ | 39 | 307 | 1,304 | 1,611 |
| Seneca, SD | 39 | 477 | 2,090 | 2,567 |
| Guernsey, IA | 39 | 313 | 1,670 | 1,983 |