RANKING · 2020 CENSUS · 102 SHOWN OF 102

Newest housing stock, Illinois counties · 2020

Illinois counties ranked by median year housing was built (2020 ACS). This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 1969.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Kendall County, ILIL145,4702000+2%

02Will County, ILIL712,2531991+1%

03Monroe County, ILIL34,8401989+1%

04McHenry County, ILIL317,7511989+1%

05Boone County, ILIL53,5681985+1%

06Grundy County, ILIL54,0521984+1%

07Kane County, ILIL525,7571982+1%

08Lake County, ILIL719,3391981+1%

09Johnson County, ILIL13,3631980+1%

10Williamson County, ILIL67,2251980+1%

11Champaign County, ILIL209,9721979+1%

12McLean County, ILIL171,4191979+1%

13DuPage County, ILIL934,29819780%

14Pope County, ILIL3,6721978+1%

15DeKalb County, ILIL101,8351977+1%

16Effingham County, ILIL34,51919770%

17Clinton County, ILIL37,1281976+1%

18Jackson County, ILIL52,50119760%

19Massac County, ILIL13,5021976+1%

20Jefferson County, ILIL36,1471975+1%

21Jersey County, ILIL21,1601975+1%

22St. Clair County, ILIL250,7081974+1%

23Bond County, ILIL16,9591974+1%

24Jasper County, ILIL9,0321974+1%

25Jo Daviess County, ILIL21,5941974+1%

26Menard County, ILIL11,8631974+1%

27Putnam County, ILIL5,6191974+1%

28Union County, ILIL16,6561974+1%

29Woodford County, ILIL38,1111974+1%

30Sangamon County, ILIL194,1701972+1%

31Clay County, ILIL12,7931972+1%

32Gallatin County, ILIL4,61619720%

33Marion County, ILIL36,3821972+1%

34Perry County, ILIL20,1601972+1%

35Piatt County, ILIL16,7911972+1%

36Washington County, ILIL13,5641972+1%

37Wayne County, ILIL15,8821972+1%

38Henderson County, ILIL5,9841971+1%

39Kankakee County, ILIL105,5251971+1%

40Randolph County, ILIL29,9211971+1%

41Richland County, ILIL15,2191971+1%

42Schuyler County, ILIL6,6571971+1%

43Coles County, ILIL46,6071970+1%

44Cumberland County, ILIL10,20819700%

45Hamilton County, ILIL7,8591970+1%

46Moultrie County, ILIL14,3711970+1%

47Ogle County, ILIL51,3991970+1%

48Winnebago County, ILIL283,6741970+1%

49Saline County, ILIL22,7721969+1%

50Douglas County, ILIL19,8801969+1%

51Madison County, ILIL263,1101969+1%

52Alexander County, ILIL4,57019680%

53Pulaski County, ILIL4,82019680%

54Shelby County, ILIL20,5761968+1%

55Calhoun County, ILIL4,3001967+1%

56Hardin County, ILIL3,58819670%

57McDonough County, ILIL25,91619670%

58Tazewell County, ILIL130,04919670%

59Brown County, ILIL6,4011966+1%

60Clark County, ILIL15,1141966+1%

61Edwards County, ILIL5,89819660%

62Franklin County, ILIL36,9161966+1%

63Adams County, ILIL64,2671965+1%

64Macoupin County, ILIL43,7481965+1%

65Morgan County, ILIL32,51519650%

66Wabash County, ILIL10,90719650%

67Cass County, ILIL12,4631964+1%

68Fayette County, ILIL20,79019640%

69Peoria County, ILIL178,55319640%

70Crawford County, ILIL18,64819630%

71De Witt County, ILIL15,1181963+1%

72Macon County, ILIL99,30019630%

73Marshall County, ILIL11,4731963+1%

74Montgomery County, ILIL28,0761963+1%

75Christian County, ILIL33,4431962+1%

76Hancock County, ILIL16,8031962+1%

77LaSalle County, ILIL107,7731961+1%

78Mason County, ILIL12,41119610%

79Pike County, ILIL14,2311961+1%

80Whiteside County, ILIL54,12119610%

81Lawrence County, ILIL13,79019600%

82Rock Island County, ILIL141,86919600%

83Henry County, ILIL48,09519600%

84Iroquois County, ILIL26,15019600%

85Logan County, ILIL27,18219600%

86White County, ILIL13,25019600%

87Cook County, ILIL5,194,62519590%

88Edgar County, ILIL16,3231959+1%

89Fulton County, ILIL32,9011959+1%

90Lee County, ILIL32,91419590%

91Livingston County, ILIL35,05719580%

92Stephenson County, ILIL43,22019580%

93Carroll County, ILIL15,4191957+1%

94Mercer County, ILIL15,22919570%

95Bureau County, ILIL32,5101956+1%

96Knox County, ILIL47,76719560%

97Scott County, ILIL4,8661956+1%

98Ford County, ILIL13,21619550%

99Stark County, ILIL5,3191955+1%

100Vermilion County, ILIL71,25919550%

101Warren County, ILIL16,22219540%

102Greene County, ILIL11,31319530%

SHOWING 1–102 OF 102

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