| Business | Phone |
| Jefferson Twp Supervisors 1610 Glades Pike, Somerset 15501 | (814) 443-4089 |
| Lincoln Township Supervisors 125 Municipal Rd, Somerset 15501 | (814) 443-2096 |
| Somerset Borough Bldg Permits 340 W Union St, Somerset 15501 | (814) 445-5595 |
| Somerset Municipal Authority 2209 N Center Ave, Somerset 15501 | (814) 445-5842 |
| Somerset Municipal Building 340 W Union St, Somerset 15501 | (814) 443-2661 |
| Somerset Registration Office 300 N Center Ave # 510, Somerset 15501 | (814) 445-1549 |
| Somerset Supervisors 2209 N Center Ave, Somerset 15501 | (814) 445-4675 |
| Somerset Twp Municipal Auth 245 Roof Garden Way, Somerset 15501 | (814) 444-9862 |
| Somerset Twp Pump Station 1146 N Center Ave, Somerset 15501 | (814) 445-2836 |
| Somerset Twp Pump Station Rr 2, Somerset 15501 | (814) 445-2836 |