RANKING · 2020 CENSUS · 99 SHOWN OF 99

Least segregated, Iowa counties · 2020

Iowa counties with the lowest CensusEasy Segregation Score, where residents of every race are spread most evenly across neighborhoods (2020 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 23.

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SAME RANKING BYMetros

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

RANKPLACESTATEPOPSEGREGATION SCOREVS –

01Fremont County, IAIA6,5222–

02Guthrie County, IAIA10,7823–

03Osceola County, IAIA5,9803–

04Lyon County, IAIA12,3543–

05Delaware County, IAIA17,6744–

06Van Buren County, IAIA7,1315–

07Mitchell County, IAIA10,6506–

08Pocahontas County, IAIA6,8197–

09Mills County, IAIA14,7937–

10Davis County, IAIA9,2307–

11Wayne County, IAIA6,7388–

12Greene County, IAIA8,65810–

13O'Brien County, IAIA14,22011–

14Carroll County, IAIA20,30311–

15Appanoose County, IAIA12,07712–

16Kossuth County, IAIA14,32213–

17Worth County, IAIA7,33813–

18Monroe County, IAIA7,40614–

19Benton County, IAIA26,00414–

20Dickinson County, IAIA18,07714–

21Montgomery County, IAIA10,00215–

22Butler County, IAIA14,04915–

23Fayette County, IAIA19,04715–

24Keokuk County, IAIA9,79715–

25Ringgold County, IAIA4,64216–

26Madison County, IAIA17,27016–

27Plymouth County, IAIA25,69716–

28Chickasaw County, IAIA11,66317–

29Palo Alto County, IAIA8,89918–

30Iowa County, IAIA16,50418–

31Adair County, IAIA7,40318–

32Adams County, IAIA3,61719–

33Shelby County, IAIA11,68919–

34Calhoun County, IAIA9,56219–

35Emmet County, IAIA9,10719–

36Hancock County, IAIA10,52820–

37Mahaska County, IAIA21,88020–

38Clay County, IAIA16,20220–

39Winnebago County, IAIA10,25121–

40Warren County, IAIA57,33121–

41Humboldt County, IAIA9,40921–

42Decatur County, IAIA7,65521–

43Boone County, IAIA26,79922–

44Winneshiek County, IAIA19,73322–

45Grundy County, IAIA12,36122–

46Cerro Gordo County, IAIA42,37222–

47Buchanan County, IAIA20,88323–

48Hardin County, IAIA16,45523–

49Union County, IAIA11,82923–

50Lucas County, IAIA8,84723–

51Sioux County, IAIA36,77424–

52Harrison County, IAIA14,62325–

53Cedar County, IAIA18,35925–

54Cherokee County, IAIA11,36926–

55Muscatine County, IAIA41,85326–

56Ida County, IAIA6,77726–

57Page County, IAIA14,85626–

58Johnson County, IAIA160,04427–

59Cass County, IAIA12,96027–

60Jackson County, IAIA19,28828–

61Dubuque County, IAIA99,38128–

62Scott County, IAIA175,25928–

63Jefferson County, IAIA15,29128–

64Monona County, IAIA8,53928–

65Franklin County, IAIA9,86828–

66Wright County, IAIA12,80129–

67Clinton County, IAIA46,00229–

68Washington County, IAIA22,66730–

69Howard County, IAIA9,41530–

70Pottawattamie County, IAIA92,99631–

71Linn County, IAIA232,02832–

72Webster County, IAIA36,83833–

73Marion County, IAIA34,19233–

74Dallas County, IAIA118,45733–

75Lee County, IAIA32,30634–

76Story County, IAIA101,29134–

77Des Moines County, IAIA38,07734–

78Jasper County, IAIA38,15335–

79Bremer County, IAIA25,29635–

80Clayton County, IAIA16,84535–

81Wapello County, IAIA35,21035–

82Poweshiek County, IAIA18,36836–

83Henry County, IAIA19,34936–

84Polk County, IAIA516,54636–

85Hamilton County, IAIA14,94437–

86Marshall County, IAIA39,89037–

87Taylor County, IAIA5,83537–

88Louisa County, IAIA10,41637–

89Audubon County, IAIA5,50939–

90Jones County, IAIA21,25340–

91Clarke County, IAIA9,57440–

92Woodbury County, IAIA106,64942–

93Sac County, IAIA9,52543–

94Floyd County, IAIA14,90143–

95Tama County, IAIA16,79643–

96Black Hawk County, IAIA131,53244–

97Buena Vista County, IAIA20,44948–

98Crawford County, IAIA16,23750–

99Allamakee County, IAIA14,23859–

SHOWING 1–99 OF 99

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

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