Erie County Seat:  Erie Crawford County Seat: Meadville Warren County Seat:  Warren McKean County Seat: Smethport Potter County Seat:  Coudersport Mercer County Seat:  Mercer Venango County Seat:  Franklin Forest County Seat: Tionesta Elk County Seat:  Ridgway Cameron County Seat:  Emporium Clarion County Seat:  Clarion Jefferson County Seat:  Brookville Clearfield County Seat:  Clearfield Butler County Seat:  Butler Armstrong County Seat:  Kittanning Indiana County Seat:  Indiana Cambria County Seat:  Edensburg Blair County Seat:  Hollidaysburg Allegheny County Seat:  Pittsburgh Westmoreland County Seat:  Greensburg Washington County Seat:  Washington Fayette County Seat:  Uniontown Somerset County Seat:  Somerset Bedford County Seat:  Bedford