RANKING · 2020 CENSUS · 102 SHOWN OF 102

Most uninsured people, Illinois counties · 2020

Illinois 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 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 1,318.

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

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

RANKPLACESTATEPOPUNINSURED RESIDENTSVS –

01Cook County, ILIL5,194,625447,982–

02DuPage County, ILIL934,29849,392–

03Lake County, ILIL719,33943,987–

04Kane County, ILIL525,75743,277–

05Will County, ILIL712,25334,923–

06Winnebago County, ILIL283,67417,042–

07St. Clair County, ILIL250,70815,169–

08McHenry County, ILIL317,75115,135–

09Madison County, ILIL263,11012,891–

10Peoria County, ILIL178,55311,001–

11Champaign County, ILIL209,9729,153–

12Rock Island County, ILIL141,8697,831–

13Sangamon County, ILIL194,1707,090–

14McLean County, ILIL171,4196,863–

15Kankakee County, ILIL105,5255,884–

16Tazewell County, ILIL130,0495,797–

17Kendall County, ILIL145,4705,520–

18DeKalb County, ILIL101,8355,328–

19Macon County, ILIL99,3004,429–

20LaSalle County, ILIL107,7734,237–

21Vermilion County, ILIL71,2594,076–

22Jackson County, ILIL52,5013,929–

23Williamson County, ILIL67,2253,734–

24Coles County, ILIL46,6073,535–

25Douglas County, ILIL19,8803,087–

26Adams County, ILIL64,2673,082–

27Whiteside County, ILIL54,1212,972–

28Boone County, ILIL53,5682,827–

29Knox County, ILIL47,7672,437–

30Marion County, ILIL36,3822,392–

31Stephenson County, ILIL43,2202,229–

32Jefferson County, ILIL36,1472,206–

33Ogle County, ILIL51,3992,206–

34Henry County, ILIL48,0952,188–

35Franklin County, ILIL36,9162,166–

36Moultrie County, ILIL14,3712,029–

37Fulton County, ILIL32,9011,839–

38Macoupin County, ILIL43,7481,826–

39Grundy County, ILIL54,0521,824–

40Effingham County, ILIL34,5191,819–

41Wayne County, ILIL15,8821,704–

42Iroquois County, ILIL26,1501,670–

43McDonough County, ILIL25,9161,596–

44Woodford County, ILIL38,1111,585–

45Livingston County, ILIL35,0571,570–

46Bureau County, ILIL32,5101,564–

47Fayette County, ILIL20,7901,526–

48Christian County, ILIL33,4431,494–

49Clinton County, ILIL37,1281,463–

50Randolph County, ILIL29,9211,400–

51Saline County, ILIL22,7721,318–

52Morgan County, ILIL32,5151,217–

53Lee County, ILIL32,9141,135–

54Crawford County, ILIL18,6481,116–

55Jo Daviess County, ILIL21,5941,091–

56Lawrence County, ILIL13,7901,048–

57Union County, ILIL16,6561,036–

58Montgomery County, ILIL28,0761,018–

59Massac County, ILIL13,502976–

60Logan County, ILIL27,182963–

61Warren County, ILIL16,222932–

62Bond County, ILIL16,959926–

63Pike County, ILIL14,231880–

64Monroe County, ILIL34,840865–

65White County, ILIL13,250831–

66Jersey County, ILIL21,160825–

67Shelby County, ILIL20,576825–

68Edgar County, ILIL16,323821–

69Carroll County, ILIL15,419730–

70Mason County, ILIL12,411730–

71Greene County, ILIL11,313717–

72Perry County, ILIL20,160692–

73Wabash County, ILIL10,907690–

74Hamilton County, ILIL7,859674–

75Clay County, ILIL12,793673–

76Jasper County, ILIL9,032640–

77Piatt County, ILIL16,791635–

78Ford County, ILIL13,216631–

79Hancock County, ILIL16,803628–

80De Witt County, ILIL15,118610–

81Cass County, ILIL12,463587–

82Clark County, ILIL15,114566–

83Schuyler County, ILIL6,657558–

84Richland County, ILIL15,219536–

85Mercer County, ILIL15,229535–

86Cumberland County, ILIL10,208521–

87Marshall County, ILIL11,473504–

88Alexander County, ILIL4,570465–

89Johnson County, ILIL13,363404–

90Edwards County, ILIL5,898391–

91Washington County, ILIL13,564375–

92Brown County, ILIL6,401295–

93Menard County, ILIL11,863292–

94Henderson County, ILIL5,984282–

95Stark County, ILIL5,319264–

96Pulaski County, ILIL4,820251–

97Hardin County, ILIL3,588209–

98Gallatin County, ILIL4,616167–

99Putnam County, ILIL5,619162–

100Scott County, ILIL4,866154–

101Pope County, ILIL3,67290–

102Calhoun County, ILIL4,30046–

SHOWING 1–102 OF 102

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