RANKING · 2020 CENSUS · 99 SHOWN OF 99

Most uninsured people, Iowa counties · 2020

Iowa counties with the most residents lacking health insurance, as of the 2020 American Community Survey. Ranked by number of people, not the uninsured rate. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2020 2024

RANKPLACESTATEPOPUNINSURED RESIDENTSVS –

01Polk County, IAIA516,54622,220–

02Linn County, IAIA232,0288,664–

03Scott County, IAIA175,2598,411–

04Johnson County, IAIA160,0447,422–

05Woodbury County, IAIA106,6495,990–

06Black Hawk County, IAIA131,5325,837–

07Pottawattamie County, IAIA92,9964,963–

08Story County, IAIA101,2914,960–

09Dallas County, IAIA118,4573,451–

10Dubuque County, IAIA99,3813,392–

11Wapello County, IAIA35,2102,467–

12Davis County, IAIA9,2302,273–

13Clinton County, IAIA46,0022,241–

14Marshall County, IAIA39,8902,109–

15Webster County, IAIA36,8381,983–

16Cerro Gordo County, IAIA42,3721,813–

17Buena Vista County, IAIA20,4491,709–

18Washington County, IAIA22,6671,619–

19Muscatine County, IAIA41,8531,617–

20Des Moines County, IAIA38,0771,596–

21Lee County, IAIA32,3061,487–

22Crawford County, IAIA16,2371,471–

23Sioux County, IAIA36,7741,393–

24Marion County, IAIA34,1921,287–

25Plymouth County, IAIA25,6971,257–

26Buchanan County, IAIA20,8831,248–

27Warren County, IAIA57,3311,198–

28Appanoose County, IAIA12,0771,172–

29Franklin County, IAIA9,8681,135–

30Allamakee County, IAIA14,2381,092–

31Mahaska County, IAIA21,8801,052–

32Tama County, IAIA16,7961,041–

33Clayton County, IAIA16,8451,041–

34Jefferson County, IAIA15,2911,014–

35Poweshiek County, IAIA18,3681,000–

36Floyd County, IAIA14,901943–

37Jackson County, IAIA19,288892–

38Fayette County, IAIA19,047886–

39Jasper County, IAIA38,153882–

40Boone County, IAIA26,799810–

41Union County, IAIA11,829805–

42Dickinson County, IAIA18,077793–

43Van Buren County, IAIA7,131793–

44Bremer County, IAIA25,296783–

45Clay County, IAIA16,202746–

46Chickasaw County, IAIA11,663744–

47Kossuth County, IAIA14,322700–

48Mitchell County, IAIA10,650697–

49Louisa County, IAIA10,416681–

50Clarke County, IAIA9,574667–

51Hardin County, IAIA16,455643–

52Howard County, IAIA9,415637–

53Henry County, IAIA19,349635–

54Delaware County, IAIA17,674615–

55Benton County, IAIA26,004609–

56Cass County, IAIA12,960597–

57Emmet County, IAIA9,107593–

58Wayne County, IAIA6,738592–

59Lyon County, IAIA12,354581–

60Page County, IAIA14,856572–

61Lucas County, IAIA8,847559–

62Shelby County, IAIA11,689541–

63Cherokee County, IAIA11,369532–

64Jones County, IAIA21,253526–

65Butler County, IAIA14,049518–

66Decatur County, IAIA7,655512–

67Winneshiek County, IAIA19,733509–

68Wright County, IAIA12,801486–

69Mills County, IAIA14,793474–

70Harrison County, IAIA14,623464–

71Hamilton County, IAIA14,944455–

72O'Brien County, IAIA14,220438–

73Sac County, IAIA9,525435–

74Humboldt County, IAIA9,409430–

75Iowa County, IAIA16,504426–

76Cedar County, IAIA18,359416–

77Carroll County, IAIA20,303415–

78Madison County, IAIA17,270412–

79Taylor County, IAIA5,835391–

80Monona County, IAIA8,539390–

81Guthrie County, IAIA10,782385–

82Ida County, IAIA6,777371–

83Hancock County, IAIA10,528365–

84Keokuk County, IAIA9,797337–

85Calhoun County, IAIA9,562325–

86Pocahontas County, IAIA6,819316–

87Palo Alto County, IAIA8,899316–

88Osceola County, IAIA5,980315–

89Adair County, IAIA7,403315–

90Montgomery County, IAIA10,002311–

91Ringgold County, IAIA4,642310–

92Fremont County, IAIA6,522306–

93Worth County, IAIA7,338279–

94Monroe County, IAIA7,406275–

95Grundy County, IAIA12,361271–

96Greene County, IAIA8,658262–

97Winnebago County, IAIA10,251253–

98Adams County, IAIA3,617236–

99Audubon County, IAIA5,509235–

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS