RANKING · 1990 CENSUS · 102 SHOWN OF 102

Oldest housing stock, Illinois counties · 1990

Illinois counties ranked by oldest median year of construction (1990 ACS). This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is 1958.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01Stark County, ILIL5,3191939–

02Bureau County, ILIL32,5101940–

03Carroll County, ILIL15,4191944–

04Hancock County, ILIL16,8031946–

05Scott County, ILIL4,8661946–

06Ford County, ILIL13,2161947–

07Brown County, ILIL6,4011948–

08Fulton County, ILIL32,9011948–

09Mercer County, ILIL15,2291948–

10Edgar County, ILIL16,3231949–

11Greene County, ILIL11,3131950–

12LaSalle County, ILIL107,7731950–

13Lee County, ILIL32,9141950–

14Montgomery County, ILIL28,0761950–

15Pike County, ILIL14,2311950–

16Christian County, ILIL33,4431951–

17Jo Daviess County, ILIL21,5941951–

18Knox County, ILIL47,7671951–

19Stephenson County, ILIL43,2201951–

20Warren County, ILIL16,2221951–

21Adams County, ILIL64,2671952–

22Cass County, ILIL12,4631952–

23Franklin County, ILIL36,9161952–

24Henry County, ILIL48,0951952–

25Iroquois County, ILIL26,1501952–

26Livingston County, ILIL35,0571952–

27Marshall County, ILIL11,4731952–

28Schuyler County, ILIL6,6571952–

29Lawrence County, ILIL13,7901953–

30De Witt County, ILIL15,1181953–

31Cook County, ILIL5,194,6251954–

32Macoupin County, ILIL43,7481954–

33Vermilion County, ILIL71,2591954–

34Whiteside County, ILIL54,1211954–

35Crawford County, ILIL18,6481955–

36Logan County, ILIL27,1821955–

37Moultrie County, ILIL14,3711955–

38Rock Island County, ILIL141,8691956–

39Clark County, ILIL15,1141956–

40Hamilton County, ILIL7,8591956–

41Peoria County, ILIL178,5531956–

42Calhoun County, ILIL4,3001957–

43Douglas County, ILIL19,8801957–

44Fayette County, ILIL20,7901957–

45Macon County, ILIL99,3001957–

46Mason County, ILIL12,4111957–

47Ogle County, ILIL51,3991957–

48Wabash County, ILIL10,9071957–

49Washington County, ILIL13,5641957–

50White County, ILIL13,2501957–

51Coles County, ILIL46,6071958–

52Saline County, ILIL22,7721958–

53Edwards County, ILIL5,8981958–

54Madison County, ILIL263,1101958–

55Piatt County, ILIL16,7911958–

56Shelby County, ILIL20,5761958–

57Bond County, ILIL16,9591959–

58Hardin County, ILIL3,5881959–

59Kankakee County, ILIL105,5251959–

60St. Clair County, ILIL250,7081960–

61Clay County, ILIL12,7931960–

62McDonough County, ILIL25,9161960–

63Massac County, ILIL13,5021960–

64Menard County, ILIL11,8631960–

65Morgan County, ILIL32,5151960–

66Richland County, ILIL15,2191960–

67Wayne County, ILIL15,8821960–

68Winnebago County, ILIL283,6741960–

69Woodford County, ILIL38,1111960–

70Henderson County, ILIL5,9841961–

71Sangamon County, ILIL194,1701961–

72Alexander County, ILIL4,5701961–

73DeKalb County, ILIL101,8351961–

74Marion County, ILIL36,3821961–

75Pulaski County, ILIL4,8201961–

76Randolph County, ILIL29,9211961–

77Tazewell County, ILIL130,0491961–

78Kane County, ILIL525,7571962–

79Jasper County, ILIL9,0321962–

80Jefferson County, ILIL36,1471962–

81Jersey County, ILIL21,1601962–

82Perry County, ILIL20,1601962–

83Monroe County, ILIL34,8401963–

84Cumberland County, ILIL10,2081963–

85Gallatin County, ILIL4,6161963–

86Pope County, ILIL3,6721963–

87Putnam County, ILIL5,6191963–

88Union County, ILIL16,6561963–

89Williamson County, ILIL67,2251963–

90Boone County, ILIL53,5681964–

91Grundy County, ILIL54,0521964–

92Clinton County, ILIL37,1281966–

93Champaign County, ILIL209,9721966–

94McLean County, ILIL171,4191966–

95Jackson County, ILIL52,5011967–

96Effingham County, ILIL34,5191968–

97Lake County, ILIL719,3391968–

98Will County, ILIL712,2531968–

99Kendall County, ILIL145,4701969–

100McHenry County, ILIL317,7511969–

101Johnson County, ILIL13,3631970–

102DuPage County, ILIL934,2981972–

SHOWING 1–102 OF 102

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