| Statistic | Reportedincidents | /100k people | Delaware/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 1,654 (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) | 261 (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) | 1,393 (estimate) | 1,297 | 1,760 |


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| Item | Delaware | 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 |
| Dyersville, IA | 4,131 | 22 | 372 | 393 |
| Strawberry Point, IA | 1,411 | 97 | 517 | 614 |
| Manchester, IA | 5,011 | 132 | 1,114 | 1,246 |
| Ryan, IA | 340 | 200 | 1,067 | 1,267 |
| Coggon, IA | 743 | 212 | 1,131 | 1,343 |
| Luxemburg, IA | 219 | 231 | 1,231 | 1,462 |
| New Vienna, IA | 401 | 240 | 1,282 | 1,522 |
| Delaware, IA | 144 | 261 | 1,393 | 1,654 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Westbrook, TX | 144 | 583 | 3,055 | 3,638 |
| Le Flore, OK | 144 | 599 | 2,800 | 3,399 |
| Venedocia, OH | 144 | 414 | 2,186 | 2,601 |
| Bromide, OK | 144 | 644 | 3,013 | 3,658 |
| Magnolia, IA | 144 | 321 | 1,712 | 2,033 |
| Delaware, IA | 144 | 261 | 1,393 | 1,654 |