| Statistic | Reportedincidents | /100k people | St. Johns/100k people | Illinois/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 2,899 (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) | 443 (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) | 2,456 (estimate) | 1,720 | 1,917 |


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| Item | St. Johns | 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 |
| Sesser, IL | 1,702 | 108 | 108 | 216 |
| Pinckneyville, IL | 5,391 | 40 | 201 | 241 |
| Royalton, IL | 1,107 | 151 | 839 | 990 |
| Du Quoin, IL | 5,723 | 211 | 863 | 1,075 |
| Zeigler, IL | 1,779 | 172 | 956 | 1,128 |
| Christopher, IL | 2,601 | 38 | 2,247 | 2,285 |
| North City, IL | 683 | 374 | 2,077 | 2,451 |
| St. Johns, IL | 160 | 443 | 2,456 | 2,899 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Pyote, TX | 160 | 186 | 1,027 | 1,213 |
| Bates City, MO | 160 | 433 | 866 | 1,299 |
| Lockbourne, OH | 160 | 370 | 2,190 | 2,560 |
| Andover, IA | 160 | 382 | 1,967 | 2,350 |
| Saltillo, IN | 160 | 475 | 2,207 | 2,682 |
| St. Johns, IL | 160 | 443 | 2,456 | 2,899 |