RANKING · 2024 ACS · 99 SHOWN OF 99

Oldest housing stock, Iowa counties

Iowa counties ranked by oldest median year of construction (2023 ACS). This list covers the 99 counties in Iowa 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

01Worth County, IAIA7,3381948–

02Shelby County, IAIA11,6891949–

03Audubon County, IAIA5,5091950–

04Keokuk County, IAIA9,7971950–

05Pocahontas County, IAIA6,8191950–

06Taylor County, IAIA5,8351951–

07Ida County, IAIA6,7771952–

08Hamilton County, IAIA14,9441953–

09Greene County, IAIA8,6581954–

10Fayette County, IAIA19,0471954–

11Franklin County, IAIA9,8681954–

12Harrison County, IAIA14,6231954–

13Page County, IAIA14,8561954–

14Adams County, IAIA3,6171955–

15Emmet County, IAIA9,1071955–

16Osceola County, IAIA5,9801955–

17Cass County, IAIA12,9601956–

18Hardin County, IAIA16,4551956–

19Monona County, IAIA8,5391956–

20Mitchell County, IAIA10,6501957–

21Clinton County, IAIA46,0021957–

22Sac County, IAIA9,5251957–

23Tama County, IAIA16,7961957–

24Webster County, IAIA36,8381957–

25Adair County, IAIA7,4031958–

26Butler County, IAIA14,0491958–

27Calhoun County, IAIA9,5621958–

28Cherokee County, IAIA11,3691958–

29Floyd County, IAIA14,9011958–

30Fremont County, IAIA6,5221958–

31Marshall County, IAIA39,8901958–

32Palo Alto County, IAIA8,8991958–

33Wapello County, IAIA35,2101958–

34Des Moines County, IAIA38,0771959–

35Cerro Gordo County, IAIA42,3721959–

36Montgomery County, IAIA10,0021959–

37O'Brien County, IAIA14,2201959–

38Woodbury County, IAIA106,6491959–

39Boone County, IAIA26,7991960–

40Clayton County, IAIA16,8451960–

41Howard County, IAIA9,4151960–

42Lee County, IAIA32,3061960–

43Wright County, IAIA12,8011960–

44Hancock County, IAIA10,5281961–

45Humboldt County, IAIA9,4091961–

46Union County, IAIA11,8291962–

47Grundy County, IAIA12,3611962–

48Kossuth County, IAIA14,3221962–

49Lucas County, IAIA8,8471962–

50Winnebago County, IAIA10,2511962–

51Winneshiek County, IAIA19,7331962–

52Appanoose County, IAIA12,0771964–

53Benton County, IAIA26,0041964–

54Buena Vista County, IAIA20,4491964–

55Carroll County, IAIA20,3031964–

56Washington County, IAIA22,6671964–

57Cedar County, IAIA18,3591965–

58Jasper County, IAIA38,1531965–

59Mahaska County, IAIA21,8801965–

60Black Hawk County, IAIA131,5321966–

61Chickasaw County, IAIA11,6631966–

62Jefferson County, IAIA15,2911966–

63Louisa County, IAIA10,4161966–

64Pottawattamie County, IAIA92,9961967–

65Clay County, IAIA16,2021967–

66Delaware County, IAIA17,6741967–

67Lyon County, IAIA12,3541967–

68Crawford County, IAIA16,2371968–

69Guthrie County, IAIA10,7821968–

70Henry County, IAIA19,3491968–

71Iowa County, IAIA16,5041969–

72Wayne County, IAIA6,7381969–

73Decatur County, IAIA7,6551970–

74Bremer County, IAIA25,2961970–

75Dubuque County, IAIA99,3811970–

76Jackson County, IAIA19,2881970–

77Jones County, IAIA21,2531970–

78Monroe County, IAIA7,4061970–

79Muscatine County, IAIA41,8531970–

80Van Buren County, IAIA7,1311970–

81Poweshiek County, IAIA18,3681971–

82Plymouth County, IAIA25,6971971–

83Allamakee County, IAIA14,2381972–

84Mills County, IAIA14,7931972–

85Scott County, IAIA175,2591972–

86Buchanan County, IAIA20,8831973–

87Davis County, IAIA9,2301973–

88Ringgold County, IAIA4,6421973–

89Sioux County, IAIA36,7741973–

90Clarke County, IAIA9,5741975–

91Marion County, IAIA34,1921975–

92Madison County, IAIA17,2701977–

93Linn County, IAIA232,0281978–

94Dickinson County, IAIA18,0771979–

95Polk County, IAIA516,5461982–

96Story County, IAIA101,2911984–

97Warren County, IAIA57,3311985–

98Johnson County, IAIA160,0441992–

99Dallas County, IAIA118,4572006–

SHOWING 1–99 OF 99

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