RANKING · 2010 CENSUS · 88 SHOWN OF 88

Least racially diverse, Ohio counties · 2010

Ohio counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Holmes County, OHOH44,9705+65%

02Perry County, OHOH35,9185+181%

03Monroe County, OHOH12,9946+218%

04Carroll County, OHOH26,4756+108%

05Preble County, OHOH40,6646+148%

06Meigs County, OHOH21,5876+83%

07Auglaize County, OHOH45,9097+115%

08Brown County, OHOH44,3977+96%

09Vinton County, OHOH12,6457+215%

10Darke County, OHOH51,5207+95%

11Hocking County, OHOH27,5127+104%

12Mercer County, OHOH42,7377+94%

13Adams County, OHOH27,8657+215%

14Ashland County, OHOH52,5238+60%

15Jackson County, OHOH32,8178+138%

16Coshocton County, OHOH37,1888+68%

17Crawford County, OHOH41,8969+111%

18Pike County, OHOH27,0619+117%

19Wyandot County, OHOH21,5679+73%

20Harrison County, OHOH14,0709+38%

21Knox County, OHOH64,0029+121%

22Tuscarawas County, OHOH92,3739+125%

23Washington County, OHOH58,38910+106%

24Noble County, OHOH14,27610−43%

25Geauga County, OHOH95,67610+76%

26Hardin County, OHOH30,07210+112%

27Lawrence County, OHOH55,71011+53%

28Highland County, OHOH43,82311+96%

29Guernsey County, OHOH38,37912+90%

30Medina County, OHOH185,02512+97%

31Clermont County, OHOH216,97712+100%

32Van Wert County, OHOH29,01312+95%

33Wayne County, OHOH116,75812+69%

34Columbiana County, OHOH99,37712+43%

35Logan County, OHOH46,30213+90%

36Gallia County, OHOH29,07213+50%

37Morrow County, OHOH36,30514+458%

38Champaign County, OHOH38,82014+73%

39Fayette County, OHOH28,55214+53%

40Shelby County, OHOH48,06514+75%

41Ottawa County, OHOH39,48114+26%

42Miami County, OHOH112,63414+67%

43Scioto County, OHOH71,36515+66%

44Morgan County, OHOH13,62615+54%

45Clinton County, OHOH42,30115+87%

46Pickaway County, OHOH62,97815−12%

47Williams County, OHOH36,54915+61%

48Belmont County, OHOH64,43416+51%

49Putnam County, OHOH34,38016+42%

50Paulding County, OHOH18,72716+63%

51Licking County, OHOH185,56418+112%

52Muskingum County, OHOH87,01418+54%

53Union County, OHOH73,44619+89%

54Henry County, OHOH27,59819+27%

55Huron County, OHOH58,25020+74%

56Portage County, OHOH163,40420+75%

57Seneca County, OHOH54,52220+54%

58Athens County, OHOH63,19721+59%

59Lake County, OHOH232,21721+87%

60Jefferson County, OHOH63,59721+34%

61Hancock County, OHOH75,03421+65%

62Ashtabula County, OHOH96,71322+60%

63Fulton County, OHOH41,85323+49%

64Wood County, OHOH134,17623+67%

65Madison County, OHOH46,98523+30%

66Fairfield County, OHOH169,75225+141%

67Ross County, OHOH76,42925+48%

68Warren County, OHOH257,18125+109%

69Marion County, OHOH65,11526+50%

70Trumbull County, OHOH198,97227+26%

71Delaware County, OHOH242,03227+118%

72Defiance County, OHOH38,29228+29%

73Stark County, OHOH373,77128+37%

74Richland County, OHOH124,89330+22%

75Sandusky County, OHOH58,65531+33%

76Clark County, OHOH135,34032+32%

77Greene County, OHOH174,32233+48%

78Erie County, OHOH73,29634+32%

79Butler County, OHOH400,12835+78%

80Allen County, OHOH100,88138+20%

81Lorain County, OHOH323,21942+20%

82Summit County, OHOH538,37643+26%

83Mahoning County, OHOH224,70646+14%

84Montgomery County, OHOH539,59853+17%

85Lucas County, OHOH423,34756+20%

86Hamilton County, OHOH838,41859+18%

87Franklin County, OHOH1,361,53662+29%

88Cuyahoga County, OHOH1,232,92566+12%

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