RANKING · 1990 CENSUS · 88 SHOWN OF 88

Most racially diverse, Ohio counties · 1990

Ohio counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (1990 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is 8.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPDIVERSITY SCOREVS –

01Cuyahoga County, OHOH1,232,92553–

02Hamilton County, OHOH838,41845–

03Lucas County, OHOH423,34741–

04Montgomery County, OHOH539,59840–

05Franklin County, OHOH1,361,53640–

06Mahoning County, OHOH224,70637–

07Lorain County, OHOH323,21931–

08Summit County, OHOH538,37630–

09Allen County, OHOH100,88128–

10Clark County, OHOH135,34023–

11Greene County, OHOH174,32223–

12Erie County, OHOH73,29623–

13Richland County, OHOH124,89321–

14Madison County, OHOH46,98520–

15Defiance County, OHOH38,29220–

16Sandusky County, OHOH58,65520–

17Stark County, OHOH373,77119–

18Trumbull County, OHOH198,97218–

19Ross County, OHOH76,42918–

20Pickaway County, OHOH62,97817–

21Jefferson County, OHOH63,59715–

22Athens County, OHOH63,19715–

23Butler County, OHOH400,12814–

24Marion County, OHOH65,11514–

25Seneca County, OHOH54,52213–

26Fulton County, OHOH41,85312–

27Ashtabula County, OHOH96,71312–

28Ottawa County, OHOH39,48112–

29Henry County, OHOH27,59812–

30Muskingum County, OHOH87,01412–

31Morgan County, OHOH13,62612–

32Union County, OHOH73,44611–

33Portage County, OHOH163,40411–

34Wood County, OHOH134,17610–

35Scioto County, OHOH71,36510–

36Hancock County, OHOH75,03410–

37Putnam County, OHOH34,38010–

38Gallia County, OHOH29,07210–

39Paulding County, OHOH18,7279–

40Champaign County, OHOH38,8209–

41Warren County, OHOH257,1819–

42Fayette County, OHOH28,5528–

43Delaware County, OHOH242,0328–

44Miami County, OHOH112,6348–

45Huron County, OHOH58,2508–

46Lake County, OHOH232,2178–

47Lawrence County, OHOH55,7107–

48Highland County, OHOH43,8237–

49Harrison County, OHOH14,0707–

50Logan County, OHOH46,3027–

51Wayne County, OHOH116,7587–

52Licking County, OHOH185,5647–

53Clinton County, OHOH42,3016–

54Van Wert County, OHOH29,0136–

55Williams County, OHOH36,5496–

56Shelby County, OHOH48,0656–

57Belmont County, OHOH64,4346–

58Fairfield County, OHOH169,7525–

59Geauga County, OHOH95,6765–

60Ashland County, OHOH52,5235–

61Columbiana County, OHOH99,3775–

62Guernsey County, OHOH38,3795–

63Washington County, OHOH58,3895–

64Coshocton County, OHOH37,1885–

65Medina County, OHOH185,0255–

66Clermont County, OHOH216,9775–

67Pike County, OHOH27,0615–

68Knox County, OHOH64,0024–

69Darke County, OHOH51,5204–

70Hardin County, OHOH30,0724–

71Tuscarawas County, OHOH92,3734–

72Hocking County, OHOH27,5124–

73Brown County, OHOH44,3973–

74Carroll County, OHOH26,4753–

75Meigs County, OHOH21,5873–

76Mercer County, OHOH42,7373–

77Crawford County, OHOH41,8963–

78Jackson County, OHOH32,8173–

79Preble County, OHOH40,6643–

80Morrow County, OHOH36,3052–

81Auglaize County, OHOH45,9092–

82Wyandot County, OHOH21,5672–

83Monroe County, OHOH12,9942–

84Perry County, OHOH35,9182–

85Adams County, OHOH27,8651–

86Vinton County, OHOH12,6451–

87Noble County, OHOH14,2761–

88Holmes County, OHOH44,9701–

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)How this score is calculated

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