| Business | Phone |
| Adic Walkersville 21793 | (301) 788-0248 |
| Cambrex Bioscience Walkersvill 8830 Biggs Ford Rd, Walkersville 21793 | (301) 898-7026 |
| Glade Valley Athletic Assoc 21 W Frederick St, Walkersville 21793 | (301) 845-2617 |
| Hrc Bio-Tek Inc 31 E Frederick St, Walkersville 21793 | (301) 898-8633 |
| Medacc Inc 210 Old Island Ct, Walkersville 21793 | (301) 845-4417 |
| Scion Corp 3 N Main St, Walkersville 21793 | (301) 845-4045 |
| Snow Charles T 9011 Water Street Rd, Walkersville 21793 | (301) 845-4623 |
| Universal Maids Inc 25 Pennsylvania Dr, Walkersville 21793 | (301) 845-4680 |