| Business | Phone |
| Bookkeeping Dept 103 W Main St, Jonesborough 37659 | (423) 753-1751 |
| Clerk & Master Office Main St # 103, Jonesborough 37659 | (423) 753-1631 |
| County Executive 103 W Main St, Jonesborough 37659 | (423) 753-1666 |
| County Trustee Office 100 E Main St, Jonesborough 37659 | (423) 753-1601 |
| Register Of Deeds Main St, Jonesborough 37659 | (423) 753-1644 |
| Purchasing Department 103 W Main St, Jonesborough 37659 | (423) 753-1641 |
| Election Commission 110 E Main St, Jonesborough 37659 | (423) 753-1688 |
| Insurance Dept 103 Main St, Jonesborough 37659 | (423) 753-1719 |
| Juvenile Services 100 Main St, Jonesborough 37659 | (423) 753-1728 |
| Lamar Center 3389 Highway 81 S, Jonesborough 37659 | (423) 753-1803 |
| Locust Mountain Center 224 Harmony Rd, Jonesborough 37659 | (423) 753-1804 |