| Business | Phone |
| Buchanan Cnty Engineering Dept Rt 83, Grundy 24614 | (276) 935-6512 |
| Buchanan County Administrator Main St, Grundy 24614 | (276) 935-6500 |
| Buchanan County Animal Shelter Po Box 950, Grundy 24614 | (276) 935-6580 |
| Buchanan County Bldg Inspector Route 83, Grundy 24614 | (276) 935-5872 |
| Buchanan County Co-Op Ext Grundy 24614 | (276) 935-6577 |
| Buchanan County Cooperative Route 460, Grundy 24614 | (276) 935-6583 |
| Buchanan County Engineering Po Box 950, Grundy 24614 | (276) 935-4013 |
| Buchanan County Extension Ofc Po Box 1049, Grundy 24614 | (276) 935-5093 |
| Buchanan Rural Development Grundy 24614 | (276) 935-6589 |
| Buchanan County Garage Main St, Grundy 24614 | (276) 935-6593 |
| Buchanan County Ida Slate Creek Rd, Grundy 24614 | (276) 935-4003 |
| Buchanan Litter Control Po Box 1312, Grundy 24614 | (276) 935-6591 |
| Buchanan County Mapping Office Grundy 24614 | (276) 935-1993 |
| Buchanan County Treasure's Ofc Walnut St & Main Stamp;, Grundy 24614 | (276) 935-6551 |
| Buchanan County Voter Rgstrtn Po Box 975, Grundy 24614 | (276) 935-6534 |
| Buchanan County Youth Office Po Box 1202, Grundy 24614 | (276) 935-6590 |
| Buchanan Juvenile & Domestic Main St & Walnut Stamp;, Grundy 24614 | (276) 935-6527 |