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 (2023 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

Flip the list · Least racially diverse, US counties →

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Cuyahoga County, OHOH1,232,92554−8%

02Hamilton County, OHOH838,41845−11%

03Lucas County, OHOH423,34743−9%

04Montgomery County, OHOH539,59841−10%

05Franklin County, OHOH1,361,53640−16%

06Mahoning County, OHOH224,70639−4%

07Lorain County, OHOH323,21935−2%

08Summit County, OHOH538,37630−11%

09Allen County, OHOH100,88129−8%

10Defiance County, OHOH38,29228+28%

11Sandusky County, OHOH58,65525+11%

12Greene County, OHOH174,32223+4%

13Clark County, OHOH135,34023−4%

14Erie County, OHOH73,29623−10%

15Richland County, OHOH124,89321−13%

16Madison County, OHOH46,98520+17%

17Stark County, OHOH373,77119−6%

18Ross County, OHOH76,42918+9%

19Trumbull County, OHOH198,97218−13%

20Fulton County, OHOH41,85318+20%

21Pickaway County, OHOH62,97818+3%

22Henry County, OHOH27,59817+13%

23Seneca County, OHOH54,52216+23%

24Jefferson County, OHOH63,59716−1%

25Athens County, OHOH63,19715+17%

26Ottawa County, OHOH39,48115+31%

27Marion County, OHOH65,11515−16%

28Butler County, OHOH400,12814−26%

29Ashtabula County, OHOH96,71314−1%

30Putnam County, OHOH34,38013+17%

31Wood County, OHOH134,17613−5%

32Hancock County, OHOH75,03413−3%

33Paulding County, OHOH18,72712+24%

34Muskingum County, OHOH87,01412+4%

35Union County, OHOH73,44612+16%

36Morgan County, OHOH13,62612+20%

37Portage County, OHOH163,40411−4%

38Scioto County, OHOH71,36510+18%

39Gallia County, OHOH29,07210+11%

40Champaign County, OHOH38,8209+17%

41Huron County, OHOH58,2509−23%

42Fayette County, OHOH28,5529−3%

43Warren County, OHOH257,1819−28%

44Delaware County, OHOH242,0328−32%

45Miami County, OHOH112,6348−6%

46Van Wert County, OHOH29,0138+29%

47Williams County, OHOH36,5498−18%

48Lake County, OHOH232,2178−30%

49Lawrence County, OHOH55,7107+4%

50Highland County, OHOH43,8237+26%

51Harrison County, OHOH14,0707+10%

52Logan County, OHOH46,3027+3%

53Wayne County, OHOH116,7587−5%

54Licking County, OHOH185,5647−18%

55Clinton County, OHOH42,3017−16%

56Shelby County, OHOH48,0656−23%

57Fairfield County, OHOH169,7526−42%

58Belmont County, OHOH64,4346−44%

59Ashland County, OHOH52,5236+15%

60Geauga County, OHOH95,6765−2%

61Columbiana County, OHOH99,3775−38%

62Guernsey County, OHOH38,3795−14%

63Medina County, OHOH185,0255−15%

64Washington County, OHOH58,3895+8%

65Coshocton County, OHOH37,1885+0%

66Clermont County, OHOH216,9775−17%

67Darke County, OHOH51,5205+31%

68Pike County, OHOH27,0615+13%

69Hardin County, OHOH30,0725−4%

70Knox County, OHOH64,0024+6%

71Tuscarawas County, OHOH92,3734−2%

72Mercer County, OHOH42,7374+8%

73Hocking County, OHOH27,5124+10%

74Carroll County, OHOH26,4754+28%

75Brown County, OHOH44,3973−5%

76Wyandot County, OHOH21,5673−37%

77Crawford County, OHOH41,8963−26%

78Meigs County, OHOH21,5873−13%

79Jackson County, OHOH32,8173−19%

80Preble County, OHOH40,6643+5%

81Auglaize County, OHOH45,9093−20%

82Morrow County, OHOH36,3053+4%

83Perry County, OHOH35,9182+13%

84Monroe County, OHOH12,9942+15%

85Vinton County, OHOH12,6451−34%

86Adams County, OHOH27,8651−37%

87Holmes County, OHOH44,9701−65%

88Noble County, OHOH14,2761−95%

SHOWING 1–88 OF 88

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

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES