| Statistic | Reportedincidents | /100k people | Plymouth/100k people | Illinois/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,941 (estimate) | 2,030 | 2,281 |
| Murder | n/a | n/a | n/a | 6.6 | 5.7 |
| Rape | n/a | n/a | n/a | 42.5 | 38.0 |
| Robbery | n/a | n/a | n/a | 110.2 | 66.5 |
| Assault | n/a | n/a | n/a | 150.8 | 264.1 |
| Violent crime | n/a | n/a (estimate) | 449 (estimate) | 310 | 364 |
| Burglary | n/a | n/a | n/a | 231.8 | 250.7 |
| Theft | n/a | n/a | n/a | 1,143.5 | 1,347.2 |
| Vehicle theft | n/a | n/a | n/a | 344.7 | 318.7 |
| Property crime | n/a | n/a (estimate) | 2,492 (estimate) | 1,720 | 1,917 |


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| Item | Plymouth | 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 |
| Carthage, IL | 2,474 | 140 | 775 | 915 |
| Macomb, IL | 17,658 | 115 | 811 | 926 |
| Colchester, IL | 1,347 | 155 | 858 | 1,012 |
| Bentley, IL | 18 | 398 | 2,207 | 2,605 |
| Golden, IL | 689 | 413 | 2,291 | 2,704 |
| Tennessee, IL | 88 | 447 | 2,478 | 2,925 |
| Ferris, IL | 164 | 448 | 2,485 | 2,933 |
| Plymouth, IL | 441 | 449 | 2,492 | 2,941 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Riverdale, IA | 441 | 131 | 676 | 807 |
| South Mountain, TX | 441 | 470 | 2,589 | 3,058 |
| Hanover, MI | 441 | 550 | 1,861 | 2,410 |
| Pamelia Center, NY | 441 | 464 | 2,139 | 2,602 |
| Farragut, IA | 441 | 339 | 1,744 | 2,082 |
| Plymouth, IL | 441 | 449 | 2,492 | 2,941 |