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U.S. District Courts for the Districts of Ohio: Judicial District Organization, 1855-present

	Northern District of Ohio	Southern District of Ohio
February 10, 1855 10 Stat. 604	Counties of Allen, Ashland, Ashtabula, Auglaize, Carroll, Columbiana, Coshocton, Crawford, Cuyahoga, Defiance, Delaware, Erie, Fulton, Geauga, Hancock, Hardin, Harrison, Henry, Holmes, Huron, Jefferson, Knox, Lake, Logan, Lorain, Lucas, Mahoning, Marion, Medina, Morrow, Ottowa, Paulding, Portage, Putnam, Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Tuscarawas, Union, Van Wert, Wayne, Williams, Wood, and Wyandot.	Counties of Adams, Athens, Belmont, Brown, Butler, Champaign, Clark, Clermont, Clinton, Darke, Fairfield, Fayette, Franklin, Gallia, Greene, Guernsey, Hamilton, Highland, Hocking, Jackson, Lawrence, Licking, Madison, Meigs, Mercer, Miami, Monroe, Montgomery, Morgan, Muskingum, Noble, Perry, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Vinton, Warren, and Washington.
June 11, 1878 20 Stat. 102	Counties of Allen, Ashland, Ashtabula, Auglaize, Carroll, Columbiana, Coshocton, Crawford, Cuyahoga, Defiance, Delaware, Erie, Fulton, Geauga, Hancock, Hardin, Harrison, Henry, Holmes, Huron, Jefferson, Knox, Lake, Logan, Lorain, Lucas, Mahoning, Marion, Medina, Mercer, Morrow, Ottowa, Paulding, Portage, Putnam, Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Tuscarawas, Union, Van Wert, Wayne, Williams, Wood, and Wyandot.	Counties of Adams, Athens, Belmont, Brown, Butler, Champaign, Clark, Clermont, Clinton, Darke, Fairfield, Fayette, Franklin, Gallia, Greene, Guernsey, Hamilton, Highland, Hocking, Jackson, Lawrence, Licking, Madison, Meigs, Miami, Monroe, Montgomery, Morgan, Muskingum, Noble, Perry, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Vinton, Warren, and Washington.
February 4, 1880 21 Stat. 63	Counties of Allen, Ashland, Ashtabula, Auglaize, Carroll, Columbiana, Crawford, Cuyahoga, Defiance, Erie, Fulton, Geauga, Hancock, Hardin, Henry, Holmes, Huron, Lake, Logan, Lorain, Lucas, Mahoning, Marion, Medina, Ottowa, Paulding, Portage, Putnam, Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Tuscarawas, Van Wert, Wayne, Williams, Wood, and Wyandot.	Counties of Adams, Athens, Belmont, Brown, Butler, Champaign, Clark, Clermont, Clinton, Coshocton, Darke, Delaware, Fairfield, Fayette, Franklin, Gallia, Greene, Guernsey, Hamilton, Harrison, Highland, Hocking, Jackson, Jefferson, Knox, Lawrence, Licking, Madison, Meigs, Mercer, Miami, Monroe, Montgomery, Morgan, Morrow, Muskingum, Noble, Perry, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Union, Vinton, Warren, and Washington.
March 2, 1891 26 Stat. 799	Counties of Allen, Ashland, Ashtabula, Auglaize, Carroll, Columbiana, Crawford, Cuyahoga, Defiance, Erie, Fulton, Geauga, Hancock, Hardin, Henry, Holmes, Huron, Lake, Lorain, Lucas, Mahoning, Marion, Medina, Ottowa, Paulding, Portage, Putnam, Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Tuscarawas, Van Wert, Wayne, Williams, Wood, and Wyandot.	Counties of Adams, Athens, Belmont, Brown, Butler, Champaign, Clark, Clermont, Clinton, Coshocton, Darke, Delaware, Fairfield, Fayette, Franklin, Gallia, Greene, Guernsey, Hamilton, Harrison, Highland, Hocking, Jackson, Jefferson, Knox, Lawrence, Licking, Logan, Madison, Meigs, Mercer, Miami, Monroe, Montgomery, Morgan, Morrow, Muskingum, Noble, Perry, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Union, Vinton, Warren, and Washington.
March 3, 1911 36 Stat. 1121	Counties of Allen, Ashland, Ashtabula, Auglaize, Carroll, Columbiana, Crawford, Cuyahoga, Defiance, Erie, Fulton, Geauga, Hancock, Hardin, Henry, Holmes, Huron, Lake, Lorain, Lucas, Mahoning, Marion, Medina, Mercer, Ottowa, Paulding, Portage, Putnam, Richland, Sandusky, Seneca, Stark, Summit, Trumbull, Tuscarawas, Van Wert, Wayne, Williams, Wood, and Wyandot.	Counties of Adams, Athens, Belmont, Brown, Butler, Champaign, Clark, Clermont, Clinton, Coshocton, Darke, Delaware, Fairfield, Fayette, Franklin, Gallia, Greene, Guernsey, Hamilton, Harrison, Highland, Hocking, Jackson, Jefferson, Knox, Lawrence, Licking, Logan, Madison, Meigs, Miami, Monroe, Montgomery, Morgan, Morrow, Muskingum, Noble, Perry, Pickaway, Pike, Preble, Ross, Scioto, Shelby, Union, Vinton, Warren, and Washington.
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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