| Business | Phone |
| Carroll County Animal Control 10735 Mill Rd, Mount Carroll 61053 | (815) 244-9705 |
| Carroll County Clerk 301 N Main St, Mount Carroll 61053 | (815) 244-0221 |
| Carroll County Circuit Clerk 301 N Main St, Mount Carroll 61053 | (815) 244-0230 |
| Carroll County Highway Garage 10735 Mill Rd, Mount Carroll 61053 | (815) 244-3196 |
| Carroll County Recorder 301 N Main St, Mount Carroll 61053 | (815) 244-0223 |
| Carroll County Zoning/Esda 301 N Main St, Mount Carroll 61053 | (815) 244-0284 |