| Business | Phone |
| Engineering & Construction 750 Main St, Grand Junction 81501 | (970) 244-1775 |
| Long Range Planning 615 White Ave, Grand Junction 81501 | (970) 244-1650 |
| Mesa County Administrator 544 Rood Ave, Grand Junction 81501 | (970) 244-1800 |
| Mesa County Alternative 531 White Ave, Grand Junction 81501 | (970) 244-1802 |
| Mesa County Animal Control 362 28 Rd, Grand Junction 81501 | (970) 242-4646 |
| Mesa County Commissioners 544 Rood Ave, Grand Junction 81501 | (970) 244-1606 |
| Mesa County Coroner 2021 N 12th St, Grand Junction 81501 | (970) 248-0204 |
| Mesa County Election Division 544 Rood Ave # 301a, Grand Junction 81501 | (970) 244-1662 |
| Mesa County Engineering 750 Main St, Grand Junction 81501 | (970) 244-1765 |
| Mesa County Facilities Mgmt 315 N Spruce St, Grand Junction 81501 | (970) 244-3230 |
| Mesa County Fairgrounds 2785 Highway 50, Grand Junction 81503 | (970) 256-1531 |
| Mesa County Fleet Management 1000 S 9th St, Grand Junction 81501 | (970) 244-1820 |
| Mesa County Gis 544 Rood Ave, Grand Junction 81501 | (970) 244-1796 |
| Mesa County Human Resources Grand Junction 81501 | (970) 257-8700 |
| Mesa County Motor Vehicle Ofc 2775 Highway 50, Grand Junction 81503 | (970) 256-1545 |
| Mesa County Personnel Div 544 Rood Ave, Grand Junction 81501 | (970) 244-1854 |
| Mesa County Personnel Div 750 Main St, Grand Junction 81501 | (970) 244-1854 |
| Mesa County Planning Dept 750 Main St, Grand Junction 81501 | (970) 244-1636 |
| Mesa County Public Trustee 544 Rood Ave # 100, Grand Junction 81501 | (970) 244-1693 |
| Mesa County Purchasing Office Grand Junction 81501 | (970) 255-7150 |
| Mesa County Recording 544 Rood Ave, Grand Junction 81501 | (970) 244-1670 |
| Mesa County Risk Management 544 Rood Ave, Grand Junction 81501 | (970) 244-1868 |
| Mesa County Road & Bridge Div 1000 S 9th St, Grand Junction 81501 | (970) 244-1807 |
| Mesa County Surveyor 544 Rood Ave, Grand Junction 81501 | (970) 244-1821 |
| Mesa County Traffic Svc 925 4th Ave, Grand Junction 81501 | (970) 244-1817 |
| Mesa County Work Force Center 2897 North Ave, Grand Junction 81501 | (970) 248-0871 |