Population of Counties in Ohio (2018)

Name 2018 Population Growth Rate
Franklin County1,269,9988.89%
Cuyahoga County1,253,454-1.94%
Hamilton County810,0870.97%
Summit County540,394-0.23%
Montgomery County531,395-0.78%
Lucas County432,562-2.01%
Butler County377,9332.40%
Stark County373,528-0.49%
Lorain County306,5901.70%
Mahoning County230,169-3.45%
Lake County229,270-0.31%
Warren County226,4766.09%
Clermont County203,0162.75%
Trumbull County201,701-3.87%
Delaware County196,77712.37%
Medina County176,9032.55%
Licking County171,8223.06%
Greene County165,1092.18%
Portage County162,1620.48%
Fairfield County152,6814.29%
Clark County134,621-2.64%
Wood County129,7042.98%
Richland County121,167-2.41%
Wayne County116,4221.78%
Miami County104,3821.85%
Columbiana County103,744-3.83%
Allen County103,626-2.58%
Ashtabula County98,169-3.18%
Geauga County93,8480.48%
Tuscarawas County92,485-0.07%
Muskingum County85,929-0.33%
Ross County76,910-1.51%
Scioto County76,240-4.10%
Hancock County75,5901.21%
Erie County74,944-2.65%
Belmont County68,568-2.52%
Jefferson County66,914-3.94%
Athens County66,3201.75%
Marion County65,334-1.69%
Knox County60,832-0.43%
Lawrence County60,729-2.71%
Washington County60,535-1.90%
Sandusky County59,281-2.63%
Huron County58,391-1.96%
Pickaway County57,5303.22%
Union County55,4565.85%
Seneca County55,357-2.22%
Ashland County53,4170.17%
Darke County51,636-2.51%
Shelby County48,726-1.19%
Auglaize County45,797-0.29%
Logan County45,171-1.26%
Holmes County43,8323.20%
Brown County43,644-2.75%
Madison County43,354-0.18%
Highland County42,993-1.42%
Fulton County42,325-0.71%
Crawford County42,037-3.93%
Clinton County41,881-0.08%
Preble County41,105-2.53%
Mercer County40,710-0.19%
Ottawa County40,495-2.09%
Guernsey County39,200-2.31%
Champaign County38,737-3.33%
Defiance County38,121-2.46%
Williams County36,921-1.56%
Coshocton County36,644-0.79%
Perry County36,019-0.06%
Morrow County34,9540.47%
Putnam County34,016-1.33%
Jackson County32,534-2.17%
Hardin County31,407-2.23%
Gallia County29,996-3.48%
Fayette County28,662-1.19%
Hocking County28,386-3.71%
Pike County28,237-1.75%
Van Wert County28,166-1.73%
Adams County27,832-2.50%
Carroll County27,637-4.20%
Henry County27,269-3.19%
Meigs County23,177-2.34%
Wyandot County22,042-2.40%
Paulding County18,839-3.70%
Harrison County15,257-3.60%
Morgan County14,762-1.89%
Noble County14,443-1.39%
Monroe County14,097-3.57%
Vinton County13,021-2.86%