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. The median across all 102 is 5,409.

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%

19▲1Kendall County, ILIL145,47015,466+234%

20▼1Vermilion 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%

26▲1Stephenson County, ILIL43,22010,671+33%

27▼1Henry County, ILIL48,09510,591+27%

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

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

30▲2Boone County, ILIL53,5688,916+100%

31▼1Jackson County, ILIL52,5018,778+34%

32▼1Coles County, ILIL46,6078,592+22%

33▲2Grundy County, ILIL54,0528,031+74%

34▼1Franklin County, ILIL36,9167,835+7%

35▲3Bureau County, ILIL32,5107,614+21%

36▼2Marion County, ILIL36,3827,473+8%

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

38▼2Jefferson County, ILIL36,1477,298+19%

39▲4Lee County, ILIL32,9147,227+37%

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

41▼2Fulton County, ILIL32,9017,089+1%

42▲2Clinton County, ILIL37,1286,955+36%

43▲3Monroe County, ILIL34,8406,913+87%

44▼2Morgan County, ILIL32,5156,897+21%

45▼4Christian County, ILIL33,4436,797+12%

46▲1Jo Daviess County, ILIL21,5946,541+64%

47▼2Effingham County, ILIL34,5196,501+36%

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

49▲1Montgomery County, ILIL28,0766,007+15%

50▼1Iroquois 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%

56▲1Hancock County, ILIL16,8034,256+16%

57▼1Perry County, ILIL20,1604,185+13%

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

59▲1Edgar County, ILIL16,3234,080+17%

60▲1Union County, ILIL16,6563,899+22%

61▲1Carroll County, ILIL15,4193,768+17%

62▲1Douglas County, ILIL19,8803,679+16%

63▼4Crawford County, ILIL18,6483,659+8%

64▲2Piatt County, ILIL16,7913,529+40%

65▼1Wayne County, ILIL15,8823,510+9%

66▲1Mercer County, ILIL15,2293,389+25%

67▼2Warren County, ILIL16,2223,286+7%

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

69▲1White County, ILIL13,2503,1910%

70▲3De Witt County, ILIL15,1183,182+19%

71▼2Pike County, ILIL14,2313,152−6%

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

73▼2Clark County, ILIL15,1143,095+1%

74▲2Massac County, ILIL13,5023,049+13%

75▲3Washington County, ILIL13,5642,948+16%

76▼2Mason County, ILIL12,4112,939+6%

77▲4Marshall County, ILIL11,4732,800+13%

78▼1Lawrence County, ILIL13,7902,779−11%

79▼4Moultrie County, ILIL14,3712,739+9%

80Clay County, ILIL12,7932,727−2%

81▲1Johnson County, ILIL13,3632,630+51%

82▼3Ford County, ILIL13,2162,628−5%

83▲1Menard County, ILIL11,8632,513+53%

84▲1Wabash County, ILIL10,9072,509+14%

85▼2Greene 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%

90▲1Schuyler County, ILIL6,6571,744+26%

91▼1Henderson County, ILIL5,9841,710+25%

92▲2Putnam County, ILIL5,6191,379+43%

93▼1Edwards County, ILIL5,8981,370+6%

94▲2Gallatin County, ILIL4,6161,217+4%

95▼2Alexander County, ILIL4,5701,215−25%

96▼1Stark County, ILIL5,3191,2150%

97Pulaski County, ILIL4,8201,172−9%

98▲3Scott County, ILIL4,8661,142+25%

99▼1Calhoun County, ILIL4,3001,101+13%

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

101▼2Hardin County, ILIL3,5881,076+20%

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

SHOWING 1–102 OF 102

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES