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U.S. District Courts for the Districts of Pennsylvania: Judicial District Organization, 1818-present

 
Eastern District of Pennsylvania
Middle District of Pennsylvania
Western District of Pennsylvania
April 20, 1818
3 Stat. 462
Counties of Adams, Berks, Bradford, Bucks, Chester, Columbia, Cumberland, Dauphin, Delaware, Franklin, Lancaster, Lebanon, Lehigh, Luzerne, Lycoming, Montgomery, Northampton, Northumberland, Philadelphia, Pike, Schuylkill, Susquehanna, Tioga, Union, Wayne, and York. Not yet established. Counties of Allegheny, Armstrong, Beaver, Bedford, Butler, Cambria, Centre, Clearfield, Crawford, Erie, Fayette, Greene, Huntingdon, Indiana, Jefferson, McKean, Mercer, Mifflin, Potter, Somerset, Venango, Warren, Washington, and Westmoreland.
May 26, 1824
4 Stat. 50
Counties of Adams, Berks, Bucks, Chester, Cumberland, Dauphin, Delaware, Franklin, Lancaster, Lebanon, Lehigh, Montgomery, Northampton, Perry, Philadelphia, Pike, Schuylkill, Wayne, and York. Not yet established. Counties of Allegheny, Armstrong, Beaver, Bedford, Bradford, Butler, Cambria, Centre, Clearfield, Columbia, Crawford, Erie, Fayette, Greene, Huntingdon, Indiana, Jefferson, Luzerne, Lycoming, McKean, Mercer, Mifflin, Northumberland, Potter, Somerset, Susquehanna, Tioga, Union, Venango, Warren, Washington, and Westmoreland.
March 2, 1901
31 Stat. 880
Counties of Berks, Bucks, Chester, Delaware, Lancaster, Lehigh, Montgomery, Northampton, Philadelphia, and Schuylkill. Counties of Adams, Bradford, Cameron, Carbon, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lackawanna, Lebanon, Luzerne, Lycoming, Mifflin, Monroe, Montour, Northumberland, Perry, Pike, Potter, Snyder, Sullivan, Susquehanna, Tioga, Union, Wayne, Wyoming, and York. Counties of Allegheny, Armstrong, Beaver, Bedford, Blair, Butler, Cambria, Clarion, Clearfield, Crawford, Elk, Erie, Fayette, Forest, Greene, Indiana, Jefferson, Lawrence, McKean, Mercer, Somerset, Venango, Warren, Washington, and Westmoreland.
March 5, 1942
56 Stat. 132
The statute made no changes to the district. Counties of Adams, Blair, Bradford, Cameron, Carbon, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lackawanna, Lebanon, Luzerne, Lycoming, Mifflin, Monroe, Montour, Northumberland, Perry, Pike, Potter, Snyder, Sullivan, Susquehanna, Tioga, Union, Wayne, Wyoming, and York. Counties of Allegheny, Armstrong, Beaver, Bedford, Butler, Cambria, Clarion, Clearfield, Crawford, Elk, Erie, Fayette, Forest, Greene, Indiana, Jefferson, Lawrence, McKean, Mercer, Somerset, Venango, Warren, Washington, and Westmoreland.
July 11, 1947
61 Stat. 310
The statute made no changes to the district. Counties of Adams, Bradford, Cameron, Carbon, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lackawanna, Lebanon, Luzerne, Lycoming, Mifflin, Monroe, Montour, Northumberland, Perry, Pike, Potter, Snyder, Sullivan, Susquehanna, Tioga, Union, Wayne, Wyoming, and York. Counties of Allegheny, Armstrong, Beaver, Bedford, Blair, Butler, Cambria, Clarion, Clearfield, Crawford, Elk, Erie, Fayette, Forest, Greene, Indiana, Jefferson, Lawrence, McKean, Mercer, Somerset, Venango, Warren, Washington, and Westmoreland.
June 25, 1948
62 Stat. 888
The statute made no changes to the district. Counties of Adams, Bradford, Cameron, Carbon, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lackawanna, Lebanon, Luzerne, Lycoming, Mifflin, Monroe, Montour, Northumberland, Perry, Pike, Potter, Snyder, Sullivan, Susquehanna, Tioga, Union, Wayne, Wyoming, and York. Counties of Allegheny, Armstrong, Beaver, Bedford, Blair, Butler, Cambria, Clarion, Clearfield, Crawford, Elk, Erie, Fayette, Forest, Greene, Indiana, Jefferson, Lawrence, McKean, Mercer, Somerset, Venango, Warren, Washington, and Westmoreland.
October 21, 1998
112 Stat. 2681-116
Counties of Berks, Bucks, Chester, Delaware, Lancaster, Lehigh, Montgomery, Northampton, and Philadelphia. Counties of Adams, Bradford, Cameron, Carbon, Centre, Clinton, Columbia, Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata, Lackawanna, Lebanon, Luzerne, Lycoming, Mifflin, Monroe, Montour, Northumberland, Perry, Pike, Potter, Schuylkill, Snyder, Sullivan, Susquehanna, Tioga, Union, Wayne, Wyoming, and York. The statute made no changes to the district.
*Historical county information obtained from William M. Scholl Center for American History and Culture, Atlas of Historical County Boundaries, at The Newberry Library.

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