IBEW Local Union 607 has jurisdiction over inside work in the following Pennsylvania counties:
Columbia: Entire County except Berwick Borough
Montour: Entire County
Northumberland: Entire County except Delaware, Lewis and Turbot Townships and the Borough of Milton
Schuylkill: Upper Mahantango, Eldred, Butler, Barry, New Castle, E. Norwegian, Cass, Branch, Foster, Reilly, Frailey, Hegins, Hubley, Porter townships and Frackville Borough in their entirety and that portion of Norwegian township north of US Highway 209 from Branch township to Pottsville
Snyder: Entire County north of US Highway 522 including Selinsgrove
Union: East Buffalo and Union townships and Lewisburg Borough