RANKING · 1990 CENSUS · 102 SHOWN OF 102

Largest senior population, Illinois counties · 1990

Illinois counties home to the most residents aged 65 and over as of 1990. Ranked by number of people, not the senior share. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 3,993.

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

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

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS –

01Cook County, ILIL5,194,625631,826–

02DuPage County, ILIL934,29867,634–

03Lake County, ILIL719,33943,153–

04Madison County, ILIL263,11034,693–

05St. Clair County, ILIL250,70833,391–

06Winnebago County, ILIL283,67432,081–

07Will County, ILIL712,25330,538–

08Kane County, ILIL525,75729,407–

09Peoria County, ILIL178,55325,922–

10Sangamon County, ILIL194,17024,443–

11Rock Island County, ILIL141,86922,316–

12LaSalle County, ILIL107,77318,513–

13McHenry County, ILIL317,75117,361–

14Macon County, ILIL99,30017,009–

15Tazewell County, ILIL130,04916,371–

16Champaign County, ILIL209,97215,091–

17Vermilion County, ILIL71,25913,986–

18McLean County, ILIL171,41913,474–

19Kankakee County, ILIL105,52513,204–

20Adams County, ILIL64,26711,758–

21Williamson County, ILIL67,2259,749–

22Knox County, ILIL47,7679,664–

23Whiteside County, ILIL54,1218,966–

24Macoupin County, ILIL43,7488,600–

25Henry County, ILIL48,0958,305–

26Franklin County, ILIL36,9168,142–

27DeKalb County, ILIL101,8357,993–

28Stephenson County, ILIL43,2207,701–

29Fulton County, ILIL32,9017,224–

30Marion County, ILIL36,3827,081–

31Coles County, ILIL46,6077,080–

32Bureau County, ILIL32,5106,491–

33Jackson County, ILIL52,5016,487–

34Ogle County, ILIL51,3996,447–

35Livingston County, ILIL35,0576,219–

36Christian County, ILIL33,4436,148–

37Jefferson County, ILIL36,1476,128–

38Morgan County, ILIL32,5155,814–

39Iroquois County, ILIL26,1505,634–

40Montgomery County, ILIL28,0765,604–

41Saline County, ILIL22,7725,391–

42Randolph County, ILIL29,9215,295–

43Lee County, ILIL32,9145,055–

44Logan County, ILIL27,1824,945–

45McDonough County, ILIL25,9164,844–

46Clinton County, ILIL37,1284,652–

47Woodford County, ILIL38,1114,591–

48Effingham County, ILIL34,5194,412–

49Grundy County, ILIL54,0524,177–

50Hancock County, ILIL16,8033,998–

51Shelby County, ILIL20,5763,993–

52Fayette County, ILIL20,7903,731–

53Edgar County, ILIL16,3233,720–

54Perry County, ILIL20,1603,648–

55Jo Daviess County, ILIL21,5943,642–

56Pike County, ILIL14,2313,623–

57Boone County, ILIL53,5683,584–

58Crawford County, ILIL18,6483,561–

59Kendall County, ILIL145,4703,440–

60White County, ILIL13,2503,416–

61Wayne County, ILIL15,8823,366–

62Lawrence County, ILIL13,7903,341–

63Union County, ILIL16,6563,330–

64Warren County, ILIL16,2223,321–

65Carroll County, ILIL15,4193,134–

66Clark County, ILIL15,1143,090–

67Monroe County, ILIL34,8403,007–

68Douglas County, ILIL19,8802,972–

69Greene County, ILIL11,3132,900–

70Richland County, ILIL15,2192,886–

71Massac County, ILIL13,5022,850–

72Mason County, ILIL12,4112,847–

73Jersey County, ILIL21,1602,833–

74Clay County, ILIL12,7932,800–

75Mercer County, ILIL15,2292,793–

76Washington County, ILIL13,5642,785–

77De Witt County, ILIL15,1182,755–

78Ford County, ILIL13,2162,726–

79Moultrie County, ILIL14,3712,678–

80Bond County, ILIL16,9592,598–

81Marshall County, ILIL11,4732,498–

82Piatt County, ILIL16,7912,396–

83Cass County, ILIL12,4632,303–

84Wabash County, ILIL10,9072,118–

85Alexander County, ILIL4,5701,933–

86Jasper County, ILIL9,0321,867–

87Hamilton County, ILIL7,8591,846–

88Johnson County, ILIL13,3631,753–

89Menard County, ILIL11,8631,681–

90Cumberland County, ILIL10,2081,669–

91Edwards County, ILIL5,8981,477–

92Schuyler County, ILIL6,6571,452–

93Pulaski County, ILIL4,8201,415–

94Gallatin County, ILIL4,6161,355–

95Henderson County, ILIL5,9841,322–

96Stark County, ILIL5,3191,268–

97Calhoun County, ILIL4,3001,061–

98Scott County, ILIL4,8661,009–

99Brown County, ILIL6,401981–

100Hardin County, ILIL3,588912–

101Putnam County, ILIL5,619883–

102Pope County, ILIL3,672803–

SHOWING 1–102 OF 102

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