RANKING · 2024 ACS · 102 SHOWN OF 102

Largest senior population, Illinois counties

Illinois counties home to the most residents aged 65 and over as of 2024. Ranked by number of people, not the senior share. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide.

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS 2000

01Cook County, ILIL5,194,625827,156+31%

02DuPage County, ILIL934,298161,240+82%

03Lake County, ILIL719,339112,792+105%

04Will County, ILIL712,253102,267+146%

05Kane County, ILIL525,75780,391+137%

06Winnebago County, ILIL283,67452,518+48%

07McHenry County, ILIL317,75151,512+146%

08Madison County, ILIL263,11048,934+33%

09St. Clair County, ILIL250,70844,007+31%

10Sangamon County, ILIL194,17037,849+48%

11Peoria County, ILIL178,55332,813+26%

12Rock Island County, ILIL141,86929,061+29%

13Champaign County, ILIL209,97228,984+66%

14Tazewell County, ILIL130,04925,882+36%

15McLean County, ILIL171,41925,004+71%

16LaSalle County, ILIL107,77321,669+18%

17Macon County, ILIL99,30021,412+22%

18Kankakee County, ILIL105,52519,030+40%

19Kendall County, ILIL145,47015,466+234%

20Vermilion County, ILIL71,25914,698+9%

21DeKalb County, ILIL101,83514,020+61%

22Adams County, ILIL64,26713,317+11%

23Williamson County, ILIL67,22513,136+30%

24Whiteside County, ILIL54,12111,967+23%

25Knox County, ILIL47,76710,907+12%

26Stephenson County, ILIL43,22010,671+33%

27Henry County, ILIL48,09510,591+27%

28Ogle County, ILIL51,39910,274+50%

29Macoupin County, ILIL43,7489,566+12%

30Boone County, ILIL53,5688,916+100%

31Jackson County, ILIL52,5018,778+34%

32Coles County, ILIL46,6078,592+22%

33Grundy County, ILIL54,0528,031+74%

34Franklin County, ILIL36,9167,835+7%

35Bureau County, ILIL32,5107,614+21%

36Marion County, ILIL36,3827,473+8%

37Woodford County, ILIL38,1117,416+41%

38Jefferson County, ILIL36,1477,298+19%

39Lee County, ILIL32,9147,227+37%

40Livingston County, ILIL35,0577,164+18%

41Fulton County, ILIL32,9017,089+1%

42Clinton County, ILIL37,1286,955+36%

43Monroe County, ILIL34,8406,913+87%

44Morgan County, ILIL32,5156,897+21%

45Christian County, ILIL33,4436,797+12%

46Jo Daviess County, ILIL21,5946,541+64%

47Effingham County, ILIL34,5196,501+36%

48Randolph County, ILIL29,9216,393+21%

49Montgomery County, ILIL28,0766,007+15%

50Iroquois County, ILIL26,1505,977+5%

51Logan County, ILIL27,1825,409+15%

52McDonough County, ILIL25,9165,199+12%

53Saline County, ILIL22,7724,996−1%

54Shelby County, ILIL20,5764,905+20%

55Jersey County, ILIL21,1604,391+41%

56Hancock County, ILIL16,8034,256+16%

57Perry County, ILIL20,1604,185+13%

58Fayette County, ILIL20,7904,164+20%

59Edgar County, ILIL16,3234,080+17%

60Union County, ILIL16,6563,899+22%

61Carroll County, ILIL15,4193,768+17%

62Douglas County, ILIL19,8803,679+16%

63Crawford County, ILIL18,6483,659+8%

64Piatt County, ILIL16,7913,529+40%

65Wayne County, ILIL15,8823,510+9%

66Mercer County, ILIL15,2293,389+25%

67Warren County, ILIL16,2223,286+7%

68Richland County, ILIL15,2193,234+14%

69White County, ILIL13,2503,191−0%

70De Witt County, ILIL15,1183,182+19%

71Pike County, ILIL14,2313,152−6%

72Bond County, ILIL16,9593,137+21%

73Clark County, ILIL15,1143,095+1%

74Massac County, ILIL13,5023,049+13%

75Washington County, ILIL13,5642,948+16%

76Mason County, ILIL12,4112,939+6%

77Marshall County, ILIL11,4732,800+13%

78Lawrence County, ILIL13,7902,779−11%

79Moultrie County, ILIL14,3712,739+9%

80Clay County, ILIL12,7932,727−2%

81Johnson County, ILIL13,3632,630+51%

82Ford County, ILIL13,2162,628−5%

83Menard County, ILIL11,8632,513+53%

84Wabash County, ILIL10,9072,509+14%

85Greene County, ILIL11,3132,434−6%

86Cass County, ILIL12,4632,307+7%

87Cumberland County, ILIL10,2082,173+22%

88Jasper County, ILIL9,0321,926+16%

89Hamilton County, ILIL7,8591,816+10%

90Schuyler County, ILIL6,6571,744+26%

91Henderson County, ILIL5,9841,710+25%

92Putnam County, ILIL5,6191,379+43%

93Edwards County, ILIL5,8981,370+6%

94Gallatin County, ILIL4,6161,217+4%

95Alexander County, ILIL4,5701,215−25%

96Stark County, ILIL5,3191,215+0%

97Pulaski County, ILIL4,8201,172−9%

98Scott County, ILIL4,8661,142+25%

99Calhoun County, ILIL4,3001,101+13%

100Pope County, ILIL3,6721,084+39%

101Hardin County, ILIL3,5881,076+20%

102Brown County, ILIL6,4011,029+17%

SHOWING 1–102 OF 102

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES