Ohio Counties and Historical Facts

Ohio County records vary widely from county to county in both quality and quantity. Some have been carefully preserved while others have been much abused and neglected. Some Ohio records have simply disappeared.

For genealogists doing research in Ohio there is no effective replace for an on-site search of county courthouse records.

Ohio Counties Map
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Ohio Map of Counties

Ohio County Records

Prior to 1867, it is difficult to find birth and death records. After this time, birth and death records were recorded at the probate court office in the county where the event occurred until 1908.

Since 1908, event have been recorded at the county’s health department and also with the Vital Records Office in Columbus.

If you are looking for a marriage record before 1949, consult the probate court office of the county where the marriage took place.

All deeds from a county, regardless of the year, are held in the county recorders office.

If you are making a request by mail, use the name of the county and “County Courthouse,” and below that list the address.

Listed addresses are usually the location of the county government building. Sometimes records are located at a different address.

See also a list of links to county and county seat government run websites.

List of Ohio Extinct Counties

Kentucky has counties that no longer exist because they were discontinued, renamed or merged with another county.

A lot of these counties were established and disbanded within the 19th century; county borders have changed very little since 1900.

These are important for genealogy research purposes. Pay attention where the courthouse records went to if the county was eliminated or joined with some other county.

See the History of Ohio Counties for more details.

List of Ohio Counties with Burned Courthouses

Ohio burned county courthouse
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The damage to courthouses greatly has a bearing on genealogists in every way.

Not only are these historic structures torn from our lifetimes, so are the records they housed: marriage, wills, probate, land records, and others.

Once destroyed they’re lost forever. Although they have been placed on mircofilm, computers and film burn too.

However, not all records were damaged or lost in some counties.

  • Adams County Courthouse caught fire in 1910, resulting in the loss of most of the will books and other probate files, as well as some other records.
  • Belmont County Courthouse, 1980;
  • Brown County Courthouse, 1977;
  • Champaign County Courthouse, 1948;
  • Columbiana County Courthouse, 1976;
  • Crawford County Courthouse, 1831;
  • Delaware County Courthouse, 1835;
  • Fayette County Courthouse, 1828;
  • Franklin County Courthouse, 1879;
  • Fulton County Courthouse, before 1860;
  • Gallia County Courthouse, 1981;
  • Hamilton County Courthouse, 1814, 1849, 1884;
  • Henry County Courthouse, 1847;
  • Licking County Courthouse, Destroyed by fire on 2 April 1875. Records in the Recorder’s, Sheriff’s, Auditors and Treasurer’s offices were saved. The marriage records between 1829-1839 were possibly lost completely in the fire. Some estate records also were burned in the fire. There are gaps in records for this county. Also on 29 Mar 1879 the tower of the New Licking County Courthouse caught fire. No records were destroyed.
  • Monroe County Courthouse, 1840, 1867;
  • Seneca County Courthouse, 1841;
  • Trumbull County Courthouse, 1895.

Researchers should note that some records may have survived in each case. So, it is important to contact the county courthouses first and see which records are still available. Courthouse record keepers may also be able to point researchers to other resources.

List of Ohio Counties

County Date Formed Parent County County Seat
Adams 1797 Hamilton County West Union
Allen 1820 Shelby County Lima
Ashland 1846 Wayne, Richland, Huron, and Lorain Counties Ashland
Ashtabula 1807 Trumbull and Geauga Counties Jefferson
Athens 1805 Washington County Athens
Auglaize 1848 Allen, Mercer, Darke, Hardin, Logan, Shelby, and Van Wert Counties Wapakoneta
Belmont 1801 Jefferson and Washington Counties St. Clairsville
Brown 1818 Adams and Clermont Counties Georgetown
Butler 1803 Hamilton County Hamilton
Carroll 1833 Columbiana, Stark, Harrison, Jefferson, and Tuscarawas Counties Carrollton
Champaign 1805 Greene and Franklin Counties Urbana
Clark 1818 Champaign, Madison, and Greene Counties Springfield
Clermont 1800 Hamilton County Batavia
Clinton 1810 Highland and Warren Counties Wilmington
Columbiana 1803 Jefferson and Washington Counties Lisbon
Coshocton 1810 Muskingum and Tuscarawas Counties Coshocton
Crawford 1820 Delaware County Bucyrus
Cuyahoga 1807 Geauga County Cleveland
Darke 1809 Miami County Greenville
Defiance 1845 Williams, Henry, and Paulding Counties Defiance
Delaware 1808 Franklin County Delaware
Erie 1838 Huron and Sandusky Counties Sandusky
Fairfield 1800 Ross and Washington Counties Lancaster
Fayette 1810 Ross and Highland Counties Washington Court House
Franklin 1803 Ross and Wayne Counties Columbus
Fulton 1850 Lucas, Henry, and Williams Counties Wauseon
Gallia 1803 Washington and Adams Counties Gallipolis
Geauga 1806 Trumbull County Chardon
Greene 1803 Hamilton and Ross Counties Xenia
Guernsey 1810 Belmont and Muskingum Counties Cambridge
Hamilton 1790 One of the original counties Cincinnati
Hancock 1820 Logan County Findlay
Hardin 1820 Logan County Kenton
Harrison 1813 Jefferson and Tuscarawas Counties Cadiz
Henry 1820 Shelby County Napoleon
Highland 1805 Ross, Adams, and Clermont Counties Hillsboro
Hocking 1818 Athens, Ross, and Fairfield Counties Logan
Holmes 1824 Coshocton, Wayne, and Tuscarawas Counties Millersburg
Huron 1809 Portage and Cuyahoga Counties Norwalk
Jackson 1816 Scioto, Gallia, Athens, and Ross Counties Jackson
Jefferson 1797 Washington County Steubenville
Knox 1808 Fairfield County Mount Vernon
Lake 1840 Geauga and Cuyahoga Counties Painesville
Lawrence 1815 Gallia and Scioto Counties Ironton
Licking 1808 Fairfield County Newark
Logan 1818 Champaign County Bellefontaine
Lorain 1822 Huron, Cuyahoga, and Medina Counties Elyria
Lucas 1835 Wood, Sandusky, and Huron Counties Toledo
Madison 1810 Franklin County London
Mahoning 1846 Columbiana and Trumbull Counties Youngstown
Marion 1820 Delaware County Marion
Medina 1812 Portage County Medina
Meigs 1819 Gallia and Athens Counties Pomeroy
Mercer 1820 Darke County Celina
Miami 1807 Montgomery County Troy
Monroe 1813 Belmont, Washington, and Guernsey Counties Woodsfield
Montgomery 1803 Hamilton and Wayne Counties Dayton
Morgan 1817 Washington, Guernsey, and Muskingum Counties McConnelsville
Morrow 1848 Knox, Marion, Delaware, and Richland Counties Mount Gilead
Muskingum 1803 Washington and Fairfield Counties Zanesville
Noble 1851 Monroe, Washington, Morgan, and Guernsey Counties Caldwell
Ottawa 1840 Erie, Sandusky, and Lucas Counties Port Clinton
Paulding 1820 Darke County Paulding
Perry 1818 Washington, Fairfield, and Muskingum Counties New Lexington
Pickaway 1810 Ross, Fairfield, and Franklin Counties Circleville
Pike 1815 Ross, Scioto, and Adams Counties Waverly
Portage 1807 Trumbull County Ravenna
Preble 1808 Montgomery and Butler Counties Eaton
Putnam 1820 Shelby County Ottawa
Richland 1808 Fairfield County Mansfield
Ross 1798 Adams and Washington Counties Chillicothe
Sandusky 1820 Huron County Fremont
Scioto 1803 Adams County Portsmouth
Seneca 1820 Huron County Tiffin
Shelby 1819 Miami County Sidney
Stark 1808 Columbiana County Canton
Summit 1840 Medina, Portage, and Stark Counties Akron
Trumbull 1800 Jefferson and Wayne Counties Warren
Tuscarawas 1808 Muskingum County New Philadelphia
Union 1820 Delaware, Franklin, Logan, and Madison Counties Marysville
Van Wert 1820 Darke County Van Wert
Vinton 1850 Athens, Gallia, Hocking, Jackson, and Ross Counties McArthur
Warren 1803 Hamilton County Lebanon
Washington 1788 One of the original counties Marietta
Wayne 1808 From non-county area Wooster
Williams 1820 Darke County Bryan
Wood 1820 Refactored from non-county territory Bowling Green
Wyandot 1845 Marion, Crawford, and Hardin Counties Upper Sandusky
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