| State/Tribal/Other Agencies | Agency | Unit/Office | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|---|
| State Agencies | Illinois Commerce Commission | 20 | 12 | 8 | |
| Illinois Department of Natural Resources | 161 | 145 | 16 | ||
| Secretary of State Police | 256 | 139 | 117 | ||
| State Fire Marshal | 20 | 18 | 2 | ||
| Other Agencies | Burlington Northern Santa Fe Railroad | 22 | 19 | 3 | |
| Capitol Airport Authority | 6 | 6 | 0 | ||
| Chicago Fire Department | Arson Investigations | 11 | 3 | 8 | |
| Cook County Forest Preserve | 112 | 105 | 7 | ||
| Crystal Lake Park District | 3 | 3 | 0 | ||
| CSX Transportation | 18 | 18 | 0 | ||
| Decatur Park District | 5 | 5 | 0 | ||
| Du Page County Forest Preserve | 29 | 25 | 4 | ||
| Indian Harbor Belt Railroad | 13 | 12 | 1 | ||
| John H. Stroger Hospital | 56 | 51 | 5 | ||
| Kane County Forest Preserve | 6 | 6 | 0 | ||
| Lake County Forest Preserve | 20 | 17 | 3 | ||
| Norfolk Southern Railway | 45 | 44 | 1 | ||
| Pekin Park District | 1 | 1 | 0 | ||
| Rockford Park District | 19 | 18 | 1 | ||
| Springfield Park District | 7 | 7 | 0 | ||
| Will County Forest Preserve | 13 | 11 | 2 |
Provides the methodology used in constructing this table and other pertinent information about this table.