| Business | Phone |
| Fjd Electric Co Inc Jarrettsville 21084 | (410) 557-4080 |
| Kjw Electric Co Inc 3027 Rocks Rd, Jarrettsville 21084 | (410) 893-8972 |
| Little Electric Inc 3721 Federal Hill Rd, Jarrettsville 21084 | (410) 692-6361 |
| Traco Inc 3821 Salem Church Rd, Jarrettsville 21084 | (410) 557-6101 |
| Wyatt Electric Inc Po Box 210, Jarrettsville 21084 | (410) 557-8557 |
| Young & Young 3017 Rocks Rd, Jarrettsville 21084 | (410) 838-9397 |