FSDO offices serving Pennsylvania

Allegheny County, Armstrong County, Beaver County, Bedford County, Blair County, Butler County, Cambria County, Cameron County, Clarion County, Clearfield County, Crawford County, Elk County, Erie County, Fayette County, Forest County, Fulton County, Greene County, Indiana County, Jefferson County, Lawrence County, McKean County, Mercer County, Potter County, Somerset County, Venango County, Warren County, Washington County, Westmoreland County

Adams County, Bradford County, Centre County, Clinton County, Columbia County, Cumberland County, Dauphin County, Franklin County, Huntingdon County, Juniata County, Lancaster County, Lebanon County, Lycoming County, Mifflin County, Montour County, Northumberland County, Perry County, Schuylkill County, Snyder County, Sullivan County, Tioga County, Union County, York County

Berks County, Bucks County, Carbon County, Lackawanna County, Lehigh County, Luzerne County, Monroe County, Montgomery County, Northampton County, Pike County, Susquehanna County, Wayne County, Wyoming County

Chester County, Delaware County, Philadelphia County