RANKING · 2010 CENSUS · 99 SHOWN OF 99

Most racially diverse, Iowa counties · 2010

Iowa 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 99 counties in Iowa that qualify, ranked against each other statewide.

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IowaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Buena Vista County, IAIA20,44961+63%

02Crawford County, IAIA16,23750+121%

03Woodbury County, IAIA106,64947+50%

04Marshall County, IAIA39,89044+82%

05Polk County, IAIA516,54642+52%

06Muscatine County, IAIA41,85340+36%

07Louisa County, IAIA10,41640+40%

08Scott County, IAIA175,25937+38%

09Johnson County, IAIA160,04437+65%

10Black Hawk County, IAIA131,53235+42%

11Tama County, IAIA16,79635+227%

12Jefferson County, IAIA15,29132+213%

13Franklin County, IAIA9,86829+99%

14Story County, IAIA101,29129+46%

15Wapello County, IAIA35,21028+206%

16Wright County, IAIA12,80126+110%

17Dallas County, IAIA118,45726+62%

18Clarke County, IAIA9,57426+138%

19Linn County, IAIA232,02824+88%

20Henry County, IAIA19,34924+117%

21Sioux County, IAIA36,77424+199%

22Pottawattamie County, IAIA92,99624+115%

23Des Moines County, IAIA38,07724+67%

24Webster County, IAIA36,83823+50%

25Emmet County, IAIA9,10723+95%

26Lee County, IAIA32,30620+50%

27Hamilton County, IAIA14,94419+147%

28Osceola County, IAIA5,98019+264%

29Cerro Gordo County, IAIA42,37218+78%

30Dubuque County, IAIA99,38118+182%

31Washington County, IAIA22,66718+124%

32Clinton County, IAIA46,00217+91%

33Taylor County, IAIA5,83517+65%

34Page County, IAIA14,85617+83%

35Poweshiek County, IAIA18,36816+126%

36Allamakee County, IAIA14,23815+60%

37Hardin County, IAIA16,45515+87%

38Humboldt County, IAIA9,40915+370%

39Winnebago County, IAIA10,25115+106%

40O'Brien County, IAIA14,22015+129%

41Hancock County, IAIA10,52814+98%

42Floyd County, IAIA14,90113+172%

43Decatur County, IAIA7,65513+60%

44Clay County, IAIA16,20212+137%

45Mahaska County, IAIA21,88012+114%

46Plymouth County, IAIA25,69712+169%

47Jones County, IAIA21,25312+56%

48Cherokee County, IAIA11,36911+166%

49Fremont County, IAIA6,52211+86%

50Marion County, IAIA34,19211+94%

51Montgomery County, IAIA10,00211+162%

52Mills County, IAIA14,79311+135%

53Monroe County, IAIA7,40610+281%

54Winneshiek County, IAIA19,73310+98%

55Fayette County, IAIA19,04710+75%

56Jasper County, IAIA38,15310+80%

57Boone County, IAIA26,79910+189%

58Warren County, IAIA57,33110+123%

59Pocahontas County, IAIA6,8199+191%

60Clayton County, IAIA16,8459+275%

61Union County, IAIA11,8299+148%

62Carroll County, IAIA20,3039+254%

63Iowa County, IAIA16,5049+157%

64Monona County, IAIA8,5399+305%

65Cedar County, IAIA18,3599+158%

66Bremer County, IAIA25,2969+130%

67Chickasaw County, IAIA11,6638+248%

68Madison County, IAIA17,2708+218%

69Jackson County, IAIA19,2888+309%

70Guthrie County, IAIA10,7828+136%

71Cass County, IAIA12,9608+198%

72Benton County, IAIA26,0047+204%

73Ida County, IAIA6,7777+259%

74Appanoose County, IAIA12,0777+73%

75Adair County, IAIA7,4037+184%

76Worth County, IAIA7,3387+45%

77Ringgold County, IAIA4,6427+448%

78Shelby County, IAIA11,6897+169%

79Lyon County, IAIA12,3547+386%

80Van Buren County, IAIA7,1317+154%

81Delaware County, IAIA17,6747+219%

82Harrison County, IAIA14,6237+182%

83Palo Alto County, IAIA8,8997+133%

84Kossuth County, IAIA14,3227+110%

85Calhoun County, IAIA9,5627+49%

86Buchanan County, IAIA20,8836+103%

87Greene County, IAIA8,6586+29%

88Sac County, IAIA9,5256+90%

89Wayne County, IAIA6,7386+176%

90Howard County, IAIA9,4156+200%

91Keokuk County, IAIA9,7976+201%

92Adams County, IAIA3,6176+199%

93Grundy County, IAIA12,3616+153%

94Lucas County, IAIA8,8476+81%

95Dickinson County, IAIA18,0776+135%

96Butler County, IAIA14,0495+135%

97Audubon County, IAIA5,5095+139%

98Mitchell County, IAIA10,6504+95%

99Davis County, IAIA9,2304+50%

SHOWING 1–99 OF 99

Download CSV (full list, 99 rows)How this score is calculated

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