| Business | Phone |
| Sheriff's Police 150 N Main St, Sycamore 60178 | (815) 895-7260 |
| Sheriff's Civil Process 150 N Main St, Sycamore 60178 | (815) 895-7259 |
| Sheriff's Investigations 150 N Main St, Sycamore 60178 | (815) 895-7226 |
| Sycamore City Police Dept 535 Dekalb Ave, Sycamore 60178 | (815) 895-2123 |
| Sycamore Police Dept 535 Dekalb Ave, Sycamore 60178 | (815) 895-3435 |