By county 88

• Adams1 House · 1 Senate
• Allen1 House · 1 Senate
• Ashland1 House · 1 Senate
• Ashtabula2 House · 1 Senate
• Athens2 House · 1 Senate
• Auglaize2 House · 1 Senate
• Belmont2 House · 1 Senate
• Brown2 House · 1 Senate
• Butler4 House · 2 Senate
• Carroll1 House · 1 Senate
• Champaign1 House · 1 Senate
• Clark2 House · 1 Senate
• Clermont2 House · 1 Senate
• Clinton1 House · 1 Senate
• Columbiana2 House · 1 Senate
• Coshocton1 House · 1 Senate
• Crawford1 House · 1 Senate
• Cuyahoga11 House · 4 Senate
• Darke2 House · 2 Senate
• Defiance2 House · 1 Senate
• Delaware2 House · 1 Senate
• Erie0 House · 1 Senate
• Fairfield2 House · 1 Senate
• Fayette1 House · 1 Senate
• Franklin12 House · 4 Senate
• Fulton1 House · 1 Senate
• Gallia1 House · 1 Senate
• Geauga2 House · 2 Senate
• Greene2 House · 1 Senate
• Guernsey2 House · 2 Senate
• Hamilton7 House · 3 Senate
• Hancock1 House · 1 Senate
• Hardin1 House · 1 Senate
• Harrison1 House · 1 Senate
• Henry1 House · 1 Senate
• Highland1 House · 1 Senate
• Hocking1 House · 1 Senate
• Holmes1 House · 1 Senate
• Huron1 House · 1 Senate
• Jackson1 House · 1 Senate
• Jefferson1 House · 1 Senate
• Knox2 House · 1 Senate
• Lake2 House · 1 Senate
• Lawrence1 House · 1 Senate
• Licking2 House · 1 Senate
• Logan2 House · 2 Senate
• Lorain3 House · 0 Senate
• Lucas4 House · 2 Senate
• Madison1 House · 1 Senate
• Mahoning2 House · 1 Senate
• Marion2 House · 1 Senate
• Medina2 House · 1 Senate
• Meigs1 House · 1 Senate
• Mercer1 House · 1 Senate
• Miami1 House · 1 Senate
• Monroe1 House · 1 Senate
• Montgomery5 House · 2 Senate
• Morgan1 House · 1 Senate
• Morrow1 House · 1 Senate
• Muskingum1 House · 1 Senate
• Noble1 House · 1 Senate
• Ottawa1 House · 1 Senate
• Paulding1 House · 1 Senate
• Perry2 House · 2 Senate
• Pickaway1 House · 1 Senate
• Pike1 House · 1 Senate
• Portage2 House · 1 Senate
• Preble1 House · 1 Senate
• Putnam1 House · 1 Senate
• Richland1 House · 1 Senate
• Ross2 House · 1 Senate
• Sandusky1 House · 1 Senate
• Scioto1 House · 1 Senate
• Seneca1 House · 1 Senate
• Shelby1 House · 1 Senate
• Stark4 House · 2 Senate
• Summit5 House · 2 Senate
• Trumbull2 House · 1 Senate
• Tuscarawas1 House · 1 Senate
• Union1 House · 1 Senate
• Van Wert1 House · 1 Senate
• Vinton1 House · 1 Senate
• Warren2 House · 1 Senate
• Washington1 House · 1 Senate
• Wayne1 House · 1 Senate
• Williams1 House · 1 Senate
• Wood2 House · 1 Senate
• Wyandot1 House · 1 Senate

From the U.S. Census Bureau's Senate and House district boundaries laid over Ohio's county lines. A county split among several districts lists every member who represents part of it.