| Statistic | Reportedincidents | /100k people | Janesville/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 464 (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) | 76 (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) | 389 (estimate) | 1,441 | 1,917 |


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| Item | Janesville | 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 |
| Dike, IA | 1,192 | 40 | 207 | 248 |
| Hudson, IA | 2,409 | 65 | 335 | 400 |
| Shell Rock, IA | 1,646 | 90 | 463 | 553 |
| Tripoli, IA | 1,337 | 110 | 567 | 677 |
| Clarksville, IA | 1,345 | 116 | 599 | 715 |
| Denver, IA | 1,759 | 51 | 665 | 716 |
| Cedar Falls, IA | 40,750 | 183 | 941 | 1,124 |
| Janesville, IA | 1,051 | 76 | 389 | 464 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Mineral Springs, AR | 1,051 | 262 | 943 | 1,205 |
| Dover Plains, NY | 1,051 | 170 | 783 | 953 |
| Verplanck, NY | 1,051 | 105 | 483 | 588 |
| Argenta, IL | 1,051 | 141 | 784 | 926 |
| Hydesville, CA | 1,051 | 152 | 694 | 846 |
| Janesville, IA | 1,051 | 76 | 389 | 464 |