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


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| Item | Williamson | 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 |
| Melcher-Dallas, IA | 1,313 | 116 | 618 | 734 |
| Chariton, IA | 4,127 | 196 | 1,048 | 1,245 |
| Milo, IA | 781 | 276 | 1,473 | 1,749 |
| Lacona, IA | 339 | 292 | 1,560 | 1,852 |
| Lucas, IA | 113 | 319 | 1,705 | 2,025 |
| Melrose, IA | 179 | 343 | 1,831 | 2,174 |
| Russell, IA | 667 | 352 | 1,880 | 2,232 |
| Williamson, IA | 184 | n/a | n/a | n/a |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Deer Creek, AZ | 184 | 417 | 1,771 | 2,188 |
| East Lynne, MO | 184 | 0 | 0 | 0 |
| Tokeland, WA | 184 | 478 | 3,615 | 4,093 |
| Prestonville, KY | 184 | 301 | 1,907 | 2,208 |
| Ponderosa, NM | 184 | 383 | 1,471 | 1,855 |
| Williamson, IA | 184 | n/a | n/a | n/a |