| Agency | State/Other Agency | Unit/Office | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|---|
| State Agencies | Illinois Commerce Commission | 16 | 9 | 7 | |
| Illinois Department of Natural Resources | 167 | 152 | 15 | ||
| Secretary of State Police, District 3 | 222 | 97 | 125 | ||
| Other Agencies | Burlington Northern Santa Fe Railroad | 20 | 17 | 3 | |
| Capitol Airport Authority | 4 | 4 | 0 | ||
| Cook County Forest Preserve | 85 | 79 | 6 | ||
| Crystal Lake Park District | 3 | 3 | 0 | ||
| CSX Transportation | 21 | 21 | 0 | ||
| Decatur Park District | 9 | 9 | 0 | ||
| Du Page County Forest Preserve | 29 | 25 | 4 | ||
| Elgin, Joliet and Eastern Railway | 5 | 5 | 0 | ||
| John H. Stroger Hospital | 72 | 66 | 6 | ||
| Lake County Forest Preserve | 16 | 14 | 2 | ||
| Norfolk Southern Railway | 51 | 50 | 1 | ||
| Pekin Park District | 1 | 1 | 0 | ||
| Rockford Park District | 20 | 19 | 1 | ||
| Springfield Park District | 7 | 7 | 0 | ||
| Will County Forest Preserve | 12 | 11 | 1 |
Provides the methodology used in constructing this table and other pertinent information about this table.