Population of Counties in Ohio (2017)

Name 2017 Population Growth Rate
Franklin County1,264,5188.41%
Cuyahoga County1,249,352-2.27%
Hamilton County809,0990.85%
Summit County540,300-0.25%
Montgomery County531,239-0.93%
Lucas County432,488-2.06%
Butler County377,5372.29%
Stark County373,612-0.49%
Lorain County306,3651.62%
Mahoning County230,008-3.51%
Lake County228,614-0.61%
Warren County227,0636.34%
Clermont County203,0222.69%
Trumbull County201,825-3.83%
Delaware County196,46312.17%
Medina County177,2212.71%
Licking County172,1983.28%
Greene County164,7651.95%
Portage County161,9210.29%
Fairfield County152,5974.23%
Clark County134,786-2.50%
Wood County130,2193.40%
Richland County121,107-2.47%
Wayne County116,4701.78%
Miami County104,6792.15%
Allen County103,742-2.49%
Columbiana County103,685-3.87%
Ashtabula County98,231-3.12%
Geauga County94,0600.69%
Tuscarawas County92,420-0.15%
Muskingum County86,068-0.18%
Ross County77,000-1.41%
Scioto County76,088-4.33%
Hancock County75,8721.59%
Erie County75,107-2.50%
Belmont County68,673-2.34%
Jefferson County66,704-4.18%
Athens County66,1861.48%
Marion County65,096-2.04%
Lawrence County60,872-2.48%
Knox County60,814-0.45%
Washington County60,610-1.78%
Sandusky County59,330-2.54%
Huron County58,439-1.91%
Pickaway County57,5653.31%
Union County55,4575.80%
Seneca County55,353-2.25%
Ashland County53,6520.62%
Darke County51,778-2.24%
Shelby County48,623-1.40%
Auglaize County45,894-0.08%
Logan County45,165-1.31%
Holmes County43,9363.45%
Brown County43,759-2.49%
Madison County43,4190.06%
Highland County43,029-1.33%
Fulton County42,514-0.23%
Crawford County42,083-3.85%
Clinton County41,902-0.00%
Preble County41,247-2.20%
Mercer County40,9090.31%
Ottawa County40,636-1.83%
Guernsey County39,063-2.63%
Champaign County38,747-3.28%
Defiance County38,158-2.42%
Williams County37,017-1.38%
Coshocton County36,602-0.88%
Perry County35,927-0.30%
Morrow County35,0360.63%
Putnam County34,056-1.17%
Jackson County32,505-2.31%
Hardin County31,474-1.95%
Gallia County30,015-3.47%
Fayette County28,676-1.16%
Van Wert County28,362-1.05%
Hocking County28,340-3.83%
Pike County28,160-1.99%
Adams County27,907-2.29%
Carroll County27,669-4.01%
Henry County27,629-1.73%
Meigs County23,125-2.55%
Wyandot County22,118-2.10%
Paulding County18,865-3.64%
Harrison County15,307-3.40%
Morgan County14,804-1.73%
Noble County14,294-2.32%
Monroe County14,210-2.53%
Vinton County12,921-3.68%