Counties and equivalents in Ohio
Areas related by mapped geography to Ohio.
- Adams County, Ohio
- Allen County, Ohio
- Ashland County, Ohio
- Ashtabula County, Ohio
- Athens County, Ohio
- Auglaize County, Ohio
- Belmont County, Ohio
- Brown County, Ohio
- Butler County, Ohio
- Carroll County, Ohio
- Champaign County, Ohio
- Clark County, Ohio
- Clermont County, Ohio
- Clinton County, Ohio
- Columbiana County, Ohio
- Coshocton County, Ohio
- Crawford County, Ohio
- Cuyahoga County, Ohio
- Darke County, Ohio
- Defiance County, Ohio
- Delaware County, Ohio
- Erie County, Ohio
- Fairfield County, Ohio
- Fayette County, Ohio
- Franklin County, Ohio
- Fulton County, Ohio
- Gallia County, Ohio
- Geauga County, Ohio
- Greene County, Ohio
- Guernsey County, Ohio
- Hamilton County, Ohio
- Hancock County, Ohio
- Hardin County, Ohio
- Harrison County, Ohio
- Henry County, Ohio
- Highland County, Ohio
- Hocking County, Ohio
- Holmes County, Ohio
- Huron County, Ohio
- Jackson County, Ohio
- Jefferson County, Ohio
- Knox County, Ohio
- Lake County, Ohio
- Lawrence County, Ohio
- Licking County, Ohio
- Logan County, Ohio
- Lorain County, Ohio
- Lucas County, Ohio
- Madison County, Ohio
- Mahoning County, Ohio
- Marion County, Ohio
- Medina County, Ohio
- Meigs County, Ohio
- Mercer County, Ohio
- Miami County, Ohio
- Monroe County, Ohio
- Montgomery County, Ohio
- Morgan County, Ohio
- Morrow County, Ohio
- Muskingum County, Ohio
- Noble County, Ohio
- Ottawa County, Ohio
- Paulding County, Ohio
- Perry County, Ohio
- Pickaway County, Ohio
- Pike County, Ohio
- Portage County, Ohio
- Preble County, Ohio
- Putnam County, Ohio
- Richland County, Ohio
- Ross County, Ohio
- Sandusky County, Ohio
- Scioto County, Ohio
- Seneca County, Ohio
- Shelby County, Ohio
- Stark County, Ohio
- Summit County, Ohio
- Trumbull County, Ohio
- Tuscarawas County, Ohio
- Union County, Ohio
- Van Wert County, Ohio
- Vinton County, Ohio
- Warren County, Ohio
- Washington County, Ohio
- Wayne County, Ohio
- Williams County, Ohio
- Wood County, Ohio
- Wyandot County, Ohio