RANKING · 1990 CENSUS · 88 SHOWN OF 88

Largest by population, Ohio counties · 1990

The most populous Ohio counties as of the 1990 population estimates. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is 56,240.

OhioAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS –

01Cuyahoga County, OHOH1,412,140–

02Franklin County, OHOH961,437–

03Hamilton County, OHOH866,228–

04Montgomery County, OHOH573,809–

05Summit County, OHOH514,990–

06Lucas County, OHOH462,361–

07Stark County, OHOH367,585–

08Butler County, OHOH291,479–

09Lorain County, OHOH271,126–

10Mahoning County, OHOH264,806–

11Trumbull County, OHOH227,813–

12Lake County, OHOH215,499–

13Clermont County, OHOH150,187–

14Clark County, OHOH147,548–

15Portage County, OHOH142,585–

16Greene County, OHOH136,731–

17Licking County, OHOH128,300–

18Richland County, OHOH126,137–

19Medina County, OHOH122,354–

20Warren County, OHOH113,909–

21Wood County, OHOH113,269–

22Allen County, OHOH109,755–

23Columbiana County, OHOH108,276–

24Fairfield County, OHOH103,461–

25Wayne County, OHOH101,461–

26Ashtabula County, OHOH99,821–

27Miami County, OHOH93,182–

28Tuscarawas County, OHOH84,090–

29Muskingum County, OHOH82,068–

30Geauga County, OHOH81,129–

31Scioto County, OHOH80,327–

32Jefferson County, OHOH80,298–

33Erie County, OHOH76,779–

34Belmont County, OHOH71,074–

35Ross County, OHOH69,330–

36Delaware County, OHOH66,929–

37Hancock County, OHOH65,536–

38Marion County, OHOH64,274–

39Washington County, OHOH62,254–

40Sandusky County, OHOH61,963–

41Lawrence County, OHOH61,834–

42Seneca County, OHOH59,733–

43Athens County, OHOH59,549–

44Huron County, OHOH56,240–

45Darke County, OHOH53,619–

46Pickaway County, OHOH48,255–

47Crawford County, OHOH47,870–

48Ashland County, OHOH47,507–

49Knox County, OHOH47,473–

50Shelby County, OHOH44,915–

51Auglaize County, OHOH44,585–

52Logan County, OHOH42,310–

53Preble County, OHOH40,113–

54Ottawa County, OHOH40,029–

55Mercer County, OHOH39,443–

56Defiance County, OHOH39,350–

57Guernsey County, OHOH39,024–

58Fulton County, OHOH38,498–

59Madison County, OHOH37,068–

60Williams County, OHOH36,956–

61Champaign County, OHOH36,019–

62Highland County, OHOH35,728–

63Coshocton County, OHOH35,427–

64Clinton County, OHOH35,415–

65Brown County, OHOH34,966–

66Putnam County, OHOH33,819–

67Holmes County, OHOH32,849–

68Union County, OHOH31,969–

69Perry County, OHOH31,557–

70Hardin County, OHOH31,111–

71Gallia County, OHOH30,954–

72Van Wert County, OHOH30,464–

73Jackson County, OHOH30,230–

74Henry County, OHOH29,108–

75Morrow County, OHOH27,749–

76Fayette County, OHOH27,466–

77Carroll County, OHOH26,521–

78Hocking County, OHOH25,533–

79Adams County, OHOH25,371–

80Pike County, OHOH24,249–

81Meigs County, OHOH22,987–

82Wyandot County, OHOH22,254–

83Paulding County, OHOH20,488–

84Harrison County, OHOH16,085–

85Monroe County, OHOH15,497–

86Morgan County, OHOH14,194–

87Noble County, OHOH11,336–

88Vinton County, OHOH11,098–

SHOWING 1–88 OF 88

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS