Or by township with boroughs and villages included.

Hickory (and Neshannock)
Briar Hill, East Brook, Lakewood Park

Little Beaver
Enon Valley, Mount Air

Mahoning
Edinburg, Hillsville, North Edinburg, Robinson, Peanut

Neshanock (and Hickory)
Clover, Coaltown, Sunset Valley, Walmo

New Beaver (and Wayne)
Coverdale, Newport, Possum Hollow, Wampum

New Castle (and Union)
South New Castle

North Beaver
Bessemer, Derringer Corners, Jackson Knolls Gardens, Mt Jackson, Moravia, Sunnyside, Willow Grove

Perry
McConnells Mill State Park, Pleasant Hill, Pyles Mills, Wurtemburg

Plain Grove (and Washington)
Brent, Elliotts Mills

Pulaski
Frizzleburg, Nashua, New Bedford, Villa Maria

Scott
Harlansburg, McCaslin, Rockville

Shenango
Altman, Castlewood, Duckrun, East New Castle, Joyce, South New Castle, Union Valley

Slippery Rock
Energy, Grant City, Kennedy Mill, McConnells Mill, Princeton, Rose Point, Weigletown

Union (and New Castle)
Belmar Park, Harbor, Oakwood, Oakland, Parkstown

Washington (and Plain Grove)

Wayne (and New Beaver)
Chewton, Ellwood City, Ellport

Wilmington
Cottage Grove, Fayette, Mayville, Neshannock Falls, New Wilmington, Volant