| Department | Map | Phone | ||
| Ambulance | Location | 217-277-2001 | ambulance@co.adams.il.us | |
| Animal Warden | 217-277-2145 | animalwarden@co.adams.il.us | ||
| Circuit Clerk | Location | 217-277-2100 | circuitclerk@co.adams.il.us | |
| Book Keeper | 217-277-2110 | |||
| Child Support | 217-277-2102 | |||
| Civil | 217-277-2106 | |||
| Divorce | 217-277-2107 | |||
| Felony | 217-277-2113 | |||
| Juvenile & Family | 217-277-2111 | |||
| Legal Matters | 217-277-2109 | |||
| Misdemeanor | 217-277-2103 | |||
| Probate | 217-277-2109 | |||
| Small Claims | 217-277-2105 | |||
| Traffic | 217-277-2115 | |||
| Coroner | Location | 217-277-2015 | coroner@co.adams.il.us | |
| County Board | Location | 217-277-2150 | ||
| County Clerk | Location | 217-277-2150 | countyclerk@co.adams.il.us | |
| Accounts Payable | 217-277-2156 | |||
| Election Services | 217-277-2163 | |||
| Tax Services | 214-277-2159 | |||
| Vital Records | 217-277-2158 | |||
| Voter Registration | 217-277-2157 | |||
| Emergency Management Agency | Location | 217-277-2005 | ema@co.adams.il.us | |
| Health | Location | 217-222-8440 | health@co.adams.il.us | |
| Highway | Location | 217-223-0614 | achd@adams.net | |
| Floodplain Management | 217-223-0614 | |||
| Geographic Information System | 217-223-0614 | |||
| Juvenile Detention Center | Location | 217-277-2233 | juvenilecenter@co.adams.il.us | |
| Courthouse Maintenance | 217-277-2149 | kpeters@co.adams.il.us | ||
| Probation | Location | 217-277-2170 | probation@co.adams.il.us | |
| Public Defender | Location | 217-277-2195 | publicdefender@co.adams.il.us | |
| Recorder | Location | 217-277-2127 | recorder@co.adams.il.us | |
| Sheriff's Office | Location | 217-277-2200 | sheriff@co.adams.il.us | |
| States Attorney | Location | 217-277-2225 | statesattorney@co.adams.il.us | |
| Supervisor of Assessments | Location | 217-277-2135 | ||
| Treasurer | Location | 217-277-2245 | treasurer@co.adams.il.us | |
| 8th Circuit Courts | Location | 217-277-2055 | courts@co.adams.il.us | |
| Quincy / Adams 9-1-1 | 911@co.adams.il.us | |||
| 9-1-1 Administration | 217-228-4573 | |||
| Emergency | 9-1-1 | |||
| Non-Emergency | 217-222-9360 |