| Statistic | Reportedincidents | /100k people | Williamsville/100k people | Illinois/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 614 (estimate) | 2,004 | 2,119 |
| Murder | n/a | n/a | n/a | 5.8 | 5.0 |
| Rape | n/a | n/a | n/a | 46.9 | 37.5 |
| Robbery | n/a | n/a | n/a | 90.2 | 60.6 |
| Assault | n/a | n/a | n/a | 146.3 | 256.1 |
| Violent crime | n/a | n/a (estimate) | 89 (estimate) | 289 | 359 |
| Burglary | n/a | n/a | n/a | 290.5 | 229.2 |
| Theft | n/a | n/a | n/a | 1,134.4 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 290.4 | 258.8 |
| Property crime | n/a | n/a (estimate) | 525 (estimate) | 1,715 | 1,760 |


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| Item | Williamsville | Illinois | National |
| Law enforcement employees (officers & civilians) | n/a | 30,690 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 2.6 | 3.3 |
| State | Total offenders | Illinois /100K | National /100K |
| Illinois | 32,213 | 263 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Mount Pulaski, IL | 1,683 | 0 | 133 | 133 |
| Sherman, IL | 4,470 | 0 | 197 | 197 |
| Leland Grove, IL | 1,237 | 41 | 241 | 281 |
| Rochester, IL | 3,778 | 77 | 537 | 613 |
| Athens, IL | 2,349 | 371 | 318 | 689 |
| Jerome, IL | 1,973 | 0 | 920 | 920 |
| Grandview, IL | 1,389 | 146 | 867 | 1,013 |
| Williamsville, IL | 1,468 | 89 | 525 | 614 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Menard, TX | 1,468 | 188 | 985 | 1,173 |
| Stratford, OK | 1,468 | 353 | 848 | 1,201 |
| Leavittsburg, OH | 1,468 | 135 | 715 | 850 |
| Clarkson, KY | 1,468 | 0 | 0 | 0 |
| Bunker Hill, IL | 1,468 | 134 | 793 | 927 |
| Williamsville, IL | 1,468 | 89 | 525 | 614 |