| Statistic | Reportedincidents | /100k people | Quincy/100k people | Illinois/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,593 (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) | 374 (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) | 2,219 (estimate) | 1,715 | 1,760 |


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| Item | Quincy | Illinois | National |
| Law enforcement employees (officers & civilians) | 86 | 30,690 | 558,732 |
| Police officers & civilians /1000 residents | 2.1 | 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 |
| Canton, MO | 2,455 | 0 | 441 | 441 |
| Payson, IL | 1,398 | 135 | 800 | 934 |
| Mendon, IL | 1,092 | 140 | 829 | 969 |
| Palmyra, MO | 3,606 | 0 | 1,141 | 1,141 |
| Ursa, IL | 541 | 351 | 2,085 | 2,437 |
| Liberty, IL | 398 | 381 | 2,262 | 2,643 |
| Coatsburg, IL | 180 | 388 | 2,303 | 2,691 |
| Quincy, IL | 40,111 | 374 | 2,219 | 2,593 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| San Gabriel, CA | 40,108 | 183 | 1,967 | 2,149 |
| Hollister, CA | 40,100 | 333 | 831 | 1,164 |
| Cape Girardeau, MO | 40,100 | 623 | 2,456 | 3,080 |
| Spanish Fork, UT | 40,069 | 75 | 705 | 780 |
| Holyoke, MA | 40,161 | 1,041 | 4,232 | 5,273 |
| Quincy, IL | 40,111 | 374 | 2,219 | 2,593 |