| Statistic | Reportedincidents | /100k people | Harper/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,431 (estimate) | 1,721 | 2,281 |
| Murder | n/a | n/a | n/a | 2.5 | 5.7 |
| Rape | n/a | n/a | n/a | 41.3 | 38.0 |
| Robbery | n/a | n/a | n/a | 22.3 | 66.5 |
| Assault | n/a | n/a | n/a | 213.9 | 264.1 |
| Violent crime | n/a | n/a (estimate) | 395 (estimate) | 280 | 364 |
| Burglary | n/a | n/a | n/a | 218.6 | 250.7 |
| Theft | n/a | n/a | n/a | 1,056.8 | 1,347.2 |
| Vehicle theft | n/a | n/a | n/a | 165.2 | 318.7 |
| Property crime | n/a | n/a (estimate) | 2,035 (estimate) | 1,441 | 1,917 |


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| Item | Harper | 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 |
| Sigourney, IA | 1,909 | 0 | 0 | 0 |
| Wellman, IA | 1,428 | 100 | 516 | 617 |
| Pleasant Plain, IA | 101 | 291 | 1,499 | 1,790 |
| Millersburg, IA | 181 | 297 | 1,527 | 1,824 |
| North English, IA | 957 | 333 | 1,715 | 2,049 |
| Keota, IA | 834 | 337 | 1,732 | 2,069 |
| Richland, IA | 572 | 344 | 1,770 | 2,114 |
| Harper, IA | 96 | 395 | 2,035 | 2,431 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Sentinel Butte, ND | 96 | 378 | 2,745 | 3,122 |
| Iago, TX | 96 | 577 | 3,181 | 3,758 |
| Dixon, NE | 96 | 320 | 2,746 | 3,065 |
| Ellisville, IL | 96 | 435 | 2,411 | 2,846 |
| Auburn, WV | 96 | 411 | 1,848 | 2,259 |
| Harper, IA | 96 | 395 | 2,035 | 2,431 |