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Countryaah.com

List of All Counties in Ohio

There are a total of 88 counties in the state of Ohio. Among them, Washington County is the oldest one (established in 1788) while Noble County is the youngest (established in 1851).  With population of 1,264,518, Franklin County is the most populated. The biggest county by land area is Ashtabula County (1,819 km2) and the smallest is Lake County (591 km2). Below please see all Ohio counties which are listed in alphabetical order.

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

Map of Ohio Counties

Map of Ohio Counties

Read more:

  • List of Cities and Towns in Ohio
  • List of All Counties in Montana
  • List of All Counties in Virginia
  • List of All Counties in Louisiana
  • List of All Counties in Kentucky
  • List of All Counties in Kansas
  • List of All Counties in Iowa
  • List of All Counties in Idaho
  • List of All Counties in Hawaii
  • List of All Counties in Vermont
  • List of All Counties in Utah
  • List of All Counties in Connecticut
  • List of All Counties in Mississippi

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