Ohio

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Ohio counties by population

Number of counties: 88
Population: 11,769,923
Largest county: Franklin County
Table of counties in Ohio sorted by population from largest to smallest.
CountyPopulation
Franklin County1,313,598
Cuyahoga County1,263,667
Hamilton County826,790
Summit County540,567
Montgomery County536,136
Lucas County431,212
Butler County387,830
Stark County374,712
Lorain County311,737
Warren County239,556
Lake County232,202
Mahoning County229,044
Delaware County211,121
Clermont County207,650
Trumbull County202,199
Medina County181,448
Licking County177,454
Greene County167,043
Portage County161,897
Fairfield County157,622
Clark County136,032
Wood County131,930
Richland County124,504
Wayne County116,858
Miami County107,899
Allen County102,462
Columbiana County102,331
Ashtabula County97,869
Geauga County95,408
Tuscarawas County93,025
Muskingum County86,346
Ross County77,205
Erie County75,560
Hancock County75,139
Scioto County74,392
Belmont County67,077
Jefferson County65,620
Marion County65,515
Athens County62,933
Knox County62,399
Union County61,769
Washington County59,942
Sandusky County59,013
Huron County58,583
Lawrence County58,570
Pickaway County58,458
Seneca County55,166
Ashland County52,658
Darke County51,839
Shelby County48,307
Auglaize County46,282
Logan County45,997
Holmes County44,166
Madison County43,947
Brown County43,694
Highland County43,162
Fulton County42,709
Mercer County42,154
Clinton County42,046
Crawford County41,939
Preble County41,027
Ottawa County40,479
Champaign County38,678
Guernsey County38,542
Defiance County38,329
Williams County37,026
Coshocton County36,621
Perry County35,439
Morrow County34,892
Putnam County34,395
Jackson County32,531
Hardin County30,738
Gallia County29,369
Fayette County28,897
Van Wert County28,808
Hocking County28,180
Henry County27,618
Adams County27,564
Pike County27,271
Carroll County26,866
Meigs County22,361
Wyandot County21,933
Paulding County18,858
Harrison County14,623
Noble County14,166
Morgan County13,955
Monroe County13,514
Vinton County12,853

What is the largest county in Ohio?

Franklin County is the largest county in Ohio with a population of 1,313,598.

TOP-5 counties by population in Ohio:
  • Franklin County
  • Cuyahoga County
  • Hamilton County
  • Summit County
  • Montgomery County