| Business | Phone |
| Blairsville Municipal Auth 251 Hillside Rd, Derry 15627 | (724) 694-2324 |
| Derry Borough Office 114 E 2nd Ave, Derry 15627 | (724) 694-2030 |
| Derry Filtration Plant 620 N Chestnut St, Derry 15627 | (724) 694-8511 |
| Derry Township Supervisors 650 Derry Rd, Derry 15627 | (724) 694-8835 |