is comprised of 6 counties in Southeastern Pennsylvania:

Bucks, Chester, Delaware, Lancaster, Montgomery, and Philadelphia.

is comprised of 15 counties in Northeastern Pennsylvania:

Berks, Bradford, Carbon, Lackawanna, Lehigh, Luzerne, Monroe, Northampton, Pike, Schuylkill, Sullivan, Susquehanna, Tioga, Wayne and Wyoming.

is comprised of 23 counties in Central Pennsylvania:

Adams, Bedford, Blair, Cambria, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lebanon, Lycoming, Miflin, Montour, Northumberland, Perry, Snyder, Somerset, Union, and York.

is comprised of 23 counties in Western Pennsylvania:

Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion, Clearfield, Crawford, Elk, Erie, Fayette, Forest, Greene, Indiana, Jefferson, Lawrence, McKean, Mercer, Potter, Venango, Warren, Washington, and Westmoreland.