List of Ohio counties List of Ohio counties:
(with county seats)
Adams County (
West Union, Ohio )
Allen County (Lima, Ohio )
Ashland County (Ashland, Ohio )
Ashtabula County (Jefferson, Ohio )
Athens County (Athens, Ohio )
Auglaize County (Wapakoneta, Ohio )
Belmont County (St. Clairsville, Ohio )
Brown County (Georgetown, Ohio )
Butler County (Hamilton, Ohio )
Carroll County (Carrollton, Ohio )
Champaign County (Urbana, Ohio )
Clark County (Springfield, Ohio )
Clermont County (Batavia, Ohio )
Clinton County (Wilmington, Ohio )
Columbiana County (Lisbon, Ohio )
Coshocton County (Coshocton, Ohio )
Crawford County (Bucyrus, Ohio )
Cuyahoga County (Cleveland, Ohio )
Darke County (Greenville, Ohio )
Defiance County (Defiance, Ohio )
Delaware County (Delaware, Ohio )
Erie County (Sandusky, Ohio )
Fairfield County (Lancaster, Ohio )
Fayette County (Washington Court House)
Franklin County (Columbus, Ohio , state capital)
Fulton County (Wauseon, Ohio )
Gallia County (Gallipolis, Ohio )
Geauga County (Chardon, Ohio )
Greene County (Xenia, Ohio )
Guernsey County (Cambridge, Ohio )
Hamilton County (Cincinnati, Ohio )
Hancock County (Findlay, Ohio )
Hardin County (Kenton, Ohio )
Harrison County (Cadiz, Ohio )
Henry County (Napoleon, Ohio )
Highland County (Hillsboro, Ohio )
Hocking County (Logan, Ohio )
Holmes County (Millersburg, Ohio )
Huron County (Norwalk, Ohio )
Jackson County (Jackson, Ohio )
Jefferson County (Steubenville, Ohio )
Knox County (Mount Vernon, Ohio )
Lake County (Painesville, Ohio )
Lawrence County (Ironton, Ohio )
Licking County (Newark, Ohio )
Logan County (Bellefontaine, Ohio )
Lorain County (Elyria, Ohio )
Lucas County (Toledo, Ohio )
Madison County (London, Ohio )
Mahoning County (Youngstown, Ohio )
Marion County (Marion, Ohio )
Medina County (Medina, Ohio )
Meigs County (Pomeroy, Ohio )
Mercer County (Celina, Ohio )
Miami County (Troy, Ohio )
Monroe County (Woodsfield, Ohio )
Montgomery County (Dayton, Ohio )
Morgan County (McConnelsville, Ohio )
Morrow County (Mount Gilead, Ohio )
Muskingum County (Zanesville, Ohio )
Noble County (Caldwell, Ohio )
Ottawa County (Port Clinton, Ohio )
Paulding County (Paulding, Ohio )
Perry County (New Lexington, Ohio )
Pickaway County (Circleville, Ohio )
Pike County (Waverly )
Portage County (Ravenna, Ohio )
Preble County (Eaton, Ohio )
Putnam County (Ottawa, Ohio )
Richland County (Mansfield, Ohio )
Ross County (Chillicothe, Ohio )
Sandusky County (Fremont, Ohio )
Scioto County (Portsmouth, Ohio )
Seneca County (Tiffin, Ohio )
Shelby County (Sidney, Ohio )
Stark County (Canton, Ohio )
Summit County (Akron, Ohio )
Trumbull County (Warren, Ohio )
Tuscarawas County (New Philadelphia, Ohio )
Union County (Marysville, Ohio )
Van Wert County (Van Wert, Ohio )
Vinton County (McArthur, Ohio )
Warren County (Lebanon, Ohio )
Washington County (Marietta, Ohio )
Wayne County (Wooster, Ohio )
Williams County (Bryan, Ohio )
Wood County (Bowling Green, Ohio )
Wyandot County (Upper Sandusky, Ohio )
