Bessemer borough, Ellport borough, Ellwood City borough, Enon Valley borough, Hickory township, Little Beaver township, Mahoning township, Neshannock township, New Beaver borough, New Castle city, New Wilmington borough, North Beaver township, Perry township, Plain Grove township, Pulaski township, Scott township, Shenango township, Slippery Rock township, S.N.P.J. borough, South New Castle borough, Taylor township, Union township, Volant borough, Wampum borough, Washington township, Wayne township, Wilmington township