| Business | Phone |
| Cam-Plex 1635 Reata Dr, Gillette 82718 | (307) 682-0552 |
| Campbell Cnty Building & Plnng 412 S Gillette Ave, Gillette 82716 | (307) 682-1970 |
| Campbell Co Extension Office 1000 S Douglas Hwy A, Gillette 82716 | (307) 682-7281 |
| Campbell County Coroner 600 W Boxelder Rd, Gillette 82718 | (307) 687-6179 |
| Campbell County Custodian 500 S Gillette Ave # 133, Gillette 82716 | (307) 682-2198 |
| Campbell County Data Ctr 500 S Gillette Ave B700, Gillette 82716 | (307) 682-7860 |
| Campbell County Elections 500 S Gillette Ave 217, Gillette 82716 | (307) 686-1892 |
| Campbell County Engineering 500 S Gillette Ave # 145, Gillette 82716 | (307) 682-1970 |
| Campbell County Fair 1635 Reata Dr, Gillette 82718 | (307) 687-0200 |
| Campbell County Government 4001 Saunders Blvd, Gillette 82718 | (307) 686-9160 |
| Campbell County Commissioners 500 S Gillette Ave 1100, Gillette 82716 | (307) 682-7283 |
| Campbell County Juvenile Prbtn 500 S Gillette Ave B600, Gillette 82716 | (307) 682-0746 |
| Campbell County Landfill 909 Westover Rd, Gillette 82718 | (307) 682-9499 |
| Campbell County Road & Bridge 1704 S 4j Rd, Gillette 82718 | (307) 682-4411 |
| Campbell County Weed & Pest 213 Stocktrail Ave, Gillette 82716 | (307) 682-4369 |
| Rockpile Community Ctr 121 S 4j Rd, Gillette 82716 | (307) 687-1555 |