RANKING · 2010 CENSUS · 102 SHOWN OF 102

Largest senior population, Illinois counties · 2010

Illinois counties home to the most residents aged 65 and over as of 2010. 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, ILIL5,194,625620,329−2%

02DuPage County, ILIL934,298106,398+20%

03Lake County, ILIL719,33973,093+33%

04Will County, ILIL712,25362,814+51%

05Kane County, ILIL525,75749,690+46%

06Winnebago County, ILIL283,67440,715+15%

07Madison County, ILIL263,11038,428+4%

08St. Clair County, ILIL250,70833,810+0%

09McHenry County, ILIL317,75131,320+50%

10Sangamon County, ILIL194,17027,362+7%

11Peoria County, ILIL178,55325,963−0%

12Rock Island County, ILIL141,86923,881+6%

13Tazewell County, ILIL130,04921,139+11%

14Champaign County, ILIL209,97220,066+15%

15LaSalle County, ILIL107,77318,678+2%

16Macon County, ILIL99,30018,142+4%

17McLean County, ILIL171,41917,340+19%

18Kankakee County, ILIL105,52515,237+12%

19Vermilion County, ILIL71,25913,302−1%

20Adams County, ILIL64,26711,747−2%

21Williamson County, ILIL67,22510,837+7%

22DeKalb County, ILIL101,83510,337+19%

23Whiteside County, ILIL54,12110,247+5%

24Knox County, ILIL47,7679,762−0%

25Stephenson County, ILIL43,2208,958+12%

26Henry County, ILIL48,0958,624+3%

27Kendall County, ILIL145,4708,382+81%

28Macoupin County, ILIL43,7488,171−5%

29Ogle County, ILIL51,3998,122+18%

30Coles County, ILIL46,6077,431+5%

31Franklin County, ILIL36,9167,278−0%

32Jackson County, ILIL52,5017,002+6%

33Marion County, ILIL36,3826,923−0%

34Fulton County, ILIL32,9016,692−5%

35Boone County, ILIL53,5686,364+43%

36Bureau County, ILIL32,5106,326+0%

37Jefferson County, ILIL36,1476,288+3%

38Livingston County, ILIL35,0576,142+1%

39Christian County, ILIL33,4436,096+0%

40Morgan County, ILIL32,5155,935+4%

41Woodford County, ILIL38,1115,722+9%

42Lee County, ILIL32,9145,644+7%

43Iroquois County, ILIL26,1505,627−1%

44Grundy County, ILIL54,0525,546+20%

45Clinton County, ILIL37,1285,458+6%

46Randolph County, ILIL29,9215,340+1%

47Montgomery County, ILIL28,0765,199−0%

48Effingham County, ILIL34,5195,196+9%

49Jo Daviess County, ILIL21,5944,832+21%

50Logan County, ILIL27,1824,760+1%

51Monroe County, ILIL34,8404,658+26%

52McDonough County, ILIL25,9164,644−0%

53Saline County, ILIL22,7724,585−9%

54Shelby County, ILIL20,5764,232+4%

55Hancock County, ILIL16,8033,786+3%

56Jersey County, ILIL21,1603,605+16%

57Fayette County, ILIL20,7903,580+3%

58Perry County, ILIL20,1603,515−5%

59Edgar County, ILIL16,3233,469−1%

60Crawford County, ILIL18,6483,336−2%

61Carroll County, ILIL15,4193,262+2%

62Wayne County, ILIL15,8823,259+1%

63Union County, ILIL16,6563,235+1%

64Douglas County, ILIL19,8803,154−1%

65Pike County, ILIL14,2313,136−6%

66Richland County, ILIL15,2193,110+9%

67White County, ILIL13,2503,074−4%

68Warren County, ILIL16,2223,016−1%

69Mercer County, ILIL15,2293,001+11%

70Clark County, ILIL15,1142,946−4%

71Massac County, ILIL13,5022,838+5%

72Mason County, ILIL12,4112,805+1%

73De Witt County, ILIL15,1182,768+4%

74Piatt County, ILIL16,7912,713+7%

75Lawrence County, ILIL13,7902,683−14%

76Bond County, ILIL16,9592,671+3%

77Ford County, ILIL13,2162,633−5%

78Moultrie County, ILIL14,3712,618+4%

79Washington County, ILIL13,5642,503−1%

80Clay County, ILIL12,7932,468−12%

81Marshall County, ILIL11,4732,468−0%

82Greene County, ILIL11,3132,388−8%

83Johnson County, ILIL13,3632,167+24%

84Cass County, ILIL12,4632,142−0%

85Wabash County, ILIL10,9072,132−3%

86Menard County, ILIL11,8631,978+20%

87Cumberland County, ILIL10,2081,838+3%

88Jasper County, ILIL9,0321,689+1%

89Hamilton County, ILIL7,8591,671+1%

90Henderson County, ILIL5,9841,532+12%

91Schuyler County, ILIL6,6571,398+1%

92Alexander County, ILIL4,5701,397−14%

93Stark County, ILIL5,3191,194−2%

94Edwards County, ILIL5,8981,191−8%

95Gallatin County, ILIL4,6161,145−2%

96Pulaski County, ILIL4,8201,124−12%

97Putnam County, ILIL5,6191,069+11%

98Calhoun County, ILIL4,3001,024+5%

99Scott County, ILIL4,866966+6%

100Pope County, ILIL3,672965+23%

101Hardin County, ILIL3,588878−2%

102Brown County, ILIL6,401859−3%

SHOWING 1–102 OF 102

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