| Business | Phone |
| Montgomery County Finance Dept 755 Roanoke St 2c, Christiansburg 24073 | (540) 382-6960 |
| Montgomery County Revenue Comm 755 Roanoke St 1a, Christiansburg 24073 | (540) 382-5710 |
| Montgomery County Treasurer 755 Roanoke St 1b, Christiansburg 24073 | (540) 382-5723 |