| Statistic | Reportedincidents | /100k people | Delmar/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 1,785 (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) | 282 (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) | 1,503 (estimate) | 1,297 | 1,760 |


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| Item | Delmar | 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 |
| Preston, IA | 1,045 | 0 | 1,070 | 1,070 |
| DeWitt, IA | 5,371 | 250 | 998 | 1,248 |
| Grand Mound, IA | 573 | 267 | 1,426 | 1,694 |
| Springbrook, IA | 133 | 268 | 1,429 | 1,697 |
| Goose Lake, IA | 304 | 287 | 1,531 | 1,818 |
| Calamus, IA | 378 | 288 | 1,537 | 1,825 |
| Welton, IA | 155 | 293 | 1,566 | 1,859 |
| Delmar, IA | 511 | 282 | 1,503 | 1,785 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Miranda, CA | 511 | 540 | 2,308 | 2,847 |
| Cross Roads, PA | 511 | 218 | 1,272 | 1,490 |
| Vanderbilt, MI | 511 | 566 | 1,797 | 2,363 |
| New Houlka, MS | 511 | 284 | 1,844 | 2,128 |
| Springfield, SC | 511 | 608 | 2,738 | 3,346 |
| Delmar, IA | 511 | 282 | 1,503 | 1,785 |