| Benitez, Alejandro | Chief Assessment Officer | Assessments | (815) 334-4290 | assessments@mchenrycountyil.gov |
| Teresi, Shannon | County Auditor | Auditor | (815) 334-4208 | auditor@mchenrycountyil.gov |
| Keefe, Katherine M. | McHenry County Circuit Clerk | Circuit Clerk | | circuitclerk@mchenrycountyil.gov |
| Rein, Michael | McHenry County Coroner | Coroner | (815) 338-2144 | mrrein@mchenrycountyil.gov |
| Austin, Peter | County Administrator | County Administration | (815) 334-4226 | pbaustin@mchenrycountyil.gov |
| Hartman, Scott | Deputy County Administrator | County Administration | (815) 334-4924 | sehartman@mchenrycountyil.gov |
| Buehler, Michael | County Board Chairman | County Board | (815) 334-4224 | mjbuehler@mchenrycountyil.gov |
| Tirio, Joseph J. | McHenry County Clerk | County Clerk | (815) 334-4242 | countyclerk@mchenrycountyil.gov |
| Tirio, Joe | McHenry County Recorder | County Recorder | (815) 334-4110 | JJTirio@mchenrycountyil.gov |
| Wallis, James "Dan" | Trial Court Administrator | Court Administration | (815) 334-4385 | jdwallis@22ndcircuit.illinoiscourts.gov |
| Krause, Seth | Probation and Court Services Director | Court Services/ Probation | (815) 334-4400 | sakrause@mchenrycountyil.gov |
| Korpalski, Jr., P.E., Joseph R. | Director of Transportation/County Engineer | Division of Transportation | (815) 334-4964 | mcdot@mchenrycountyil.gov |
| Schulte, Theresa K. | McHenry County ETSB 911 Director | E911 | (815) 337-7911 | mcetsb@mchenrycountyil.gov |
| Christensen, David | EMA Director | Emergency Management | (815) 338-6400 | ema@mchenrycountyil.gov |
| Burroughs, Tom | Director of Facilities | Facilities Management | (815) 334-4155 | gtburroughs@mchenrycountyil.gov |
| Wisz, Kerri | Chief Financial Officer | Finance | (815) 334-4207 | KMWisz@mchenrycountyil.gov |
| Gattuso, Nicole | Director of GIS | Geographic Information System | (815) 334-4496 | gis@mchenrycountyil.gov |
| Adamson, Melissa H. | Public Health Administrator | Health Department | (815) 334-4510 | health@mchenrycountyil.gov |
| Ziebart, Suzanne | Director of Human Resources | Human Resources | (815) 334-4220 | humanresources@mchenrycountyil.gov |
| Sullivan, Thomas | Director of Information Technology | Information Technology | (815) 334-4138 | tmsulliv@mchenrycountyil.gov |
