RANKING · 2010 CENSUS · 101 SHOWN OF 101

Oldest housing stock, Illinois counties · 2010

Illinois counties ranked by oldest median year of construction (2023 ACS). This list covers the 101 counties in Illinois that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 2000

01Bureau County, ILIL32,5101950–

02Warren County, ILIL16,2221951–

03Ford County, ILIL13,2161952–

04Cass County, ILIL12,4631953–

05Carroll County, ILIL15,4191954–

06Fulton County, ILIL32,9011954–

07Hancock County, ILIL16,8031954–

08Mercer County, ILIL15,2291954–

09Edgar County, ILIL16,3231955–

10Greene County, ILIL11,3131955–

11Knox County, ILIL47,7671955–

12Lee County, ILIL32,9141955–

13Iroquois County, ILIL26,1501956–

14Logan County, ILIL27,1821956–

15Vermilion County, ILIL71,2591956–

16Cook County, ILIL5,194,6251957–

17Crawford County, ILIL18,6481957–

18Christian County, ILIL33,4431957–

19De Witt County, ILIL15,1181957–

20Pike County, ILIL14,2311957–

21Stephenson County, ILIL43,2201957–

22Rock Island County, ILIL141,8691958–

23Alexander County, ILIL4,5701958–

24Brown County, ILIL6,4011958–

25Henry County, ILIL48,0951958–

26LaSalle County, ILIL107,7731958–

27Livingston County, ILIL35,0571958–

28Montgomery County, ILIL28,0761958–

29Schuyler County, ILIL6,6571958–

30White County, ILIL13,2501958–

31Lawrence County, ILIL13,7901959–

32Adams County, ILIL64,2671959–

33Shelby County, ILIL20,5761959–

34Whiteside County, ILIL54,1211959–

35Clark County, ILIL15,1141960–

36Fayette County, ILIL20,7901960–

37Hamilton County, ILIL7,8591960–

38Marshall County, ILIL11,4731960–

39Wabash County, ILIL10,9071960–

40Franklin County, ILIL36,9161961–

41Macon County, ILIL99,3001961–

42Mason County, ILIL12,4111961–

43Morgan County, ILIL32,5151961–

44Moultrie County, ILIL14,3711961–

45Peoria County, ILIL178,5531961–

46Scott County, ILIL4,8661961–

47Henderson County, ILIL5,9841962–

48Edwards County, ILIL5,8981962–

49Douglas County, ILIL19,8801963–

50McDonough County, ILIL25,9161963–

51Pulaski County, ILIL4,8201963–

52Perry County, ILIL20,1601964–

53Washington County, ILIL13,5641964–

54Saline County, ILIL22,7721965–

55Hardin County, ILIL3,5881965–

56Macoupin County, ILIL43,7481965–

57Piatt County, ILIL16,7911965–

58Randolph County, ILIL29,9211965–

59Tazewell County, ILIL130,0491965–

60Clay County, ILIL12,7931966–

61Madison County, ILIL263,1101966–

62Ogle County, ILIL51,3991966–

63Richland County, ILIL15,2191966–

64Coles County, ILIL46,6071967–

65Gallatin County, ILIL4,6161967–

66Wayne County, ILIL15,8821967–

67Winnebago County, ILIL283,6741967–

68Bond County, ILIL16,9591968–

69Marion County, ILIL36,3821968–

70Putnam County, ILIL5,6191968–

71Calhoun County, ILIL4,3001969–

72St. Clair County, ILIL250,7081969–

73Jasper County, ILIL9,0321969–

74Jo Daviess County, ILIL21,5941970–

75Union County, ILIL16,6561970–

76Woodford County, ILIL38,1111970–

77Cumberland County, ILIL10,2081971–

78Jersey County, ILIL21,1601971–

79Kankakee County, ILIL105,5251971–

80Massac County, ILIL13,5021971–

81Sangamon County, ILIL194,1701972–

82Clinton County, ILIL37,1281972–

83Jackson County, ILIL52,5011972–

84Menard County, ILIL11,8631972–

85Jefferson County, ILIL36,1471973–

86Pope County, ILIL3,6721973–

87Williamson County, ILIL67,2251973–

88Champaign County, ILIL209,9721974–

89Effingham County, ILIL34,5191974–

90DeKalb County, ILIL101,8351975–

91DuPage County, ILIL934,2981977–

92Johnson County, ILIL13,3631977–

93McLean County, ILIL171,4191977–

94Kane County, ILIL525,7571978–

95Lake County, ILIL719,3391979–

96Boone County, ILIL53,5681980–

97Grundy County, ILIL54,0521982–

98Monroe County, ILIL34,8401985–

99McHenry County, ILIL317,7511986–

100Will County, ILIL712,2531990–

101Kendall County, ILIL145,4701998–

SHOWING 1–101 OF 101

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES