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

Source: U.S. Census Bureau