RANKING · 2024 ACS · 99 SHOWN OF 99

Oldest housing stock, Iowa counties

Iowa counties ranked by oldest median year of construction (2024 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 1962. Biggest climber in the top 100 since 2020: Shelby County, IA, up 26 places to #2.

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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 1990

01▲11Worth County, IAIA7,33819480%

02▲26Shelby County, IAIA11,68919490%

03▲5Audubon County, IAIA5,5091950+1%

04▼2Keokuk County, IAIA9,7971950+1%

05▲1Pocahontas County, IAIA6,81919500%

06▲1Taylor County, IAIA5,8351951+1%

07▼3Ida County, IAIA6,7771952+1%

08▲13Hamilton County, IAIA14,94419530%

09▲4Greene County, IAIA8,6581954+1%

10▲14Fayette County, IAIA19,0471954+1%

11▲9Franklin County, IAIA9,8681954+1%

12▼3Harrison County, IAIA14,6231954+1%

13▲9Page County, IAIA14,8561954+1%

14▼13Adams County, IAIA3,6171955+1%

15▲4Emmet County, IAIA9,10719550%

16▲11Osceola County, IAIA5,9801955+1%

17▼1Cass County, IAIA12,9601956+1%

18▼8Hardin County, IAIA16,45519560%

19▼5Monona County, IAIA8,5391956+1%

20▲10Mitchell County, IAIA10,6501957+1%

21▲10Clinton County, IAIA46,00219570%

22▼11Sac County, IAIA9,5251957+1%

23▼8Tama County, IAIA16,7961957+1%

24▲15Webster County, IAIA36,83819570%

25▲20Adair County, IAIA7,4031958+1%

26▼8Butler County, IAIA14,0491958+1%

27▲19Calhoun County, IAIA9,5621958+1%

28▼11Cherokee County, IAIA11,3691958+1%

29▲4Floyd County, IAIA14,90119580%

30▲4Fremont County, IAIA6,5221958+1%

31▲11Marshall County, IAIA39,89019580%

32▲19Palo Alto County, IAIA8,89919580%

33▲3Wapello County, IAIA35,2101958+1%

34▼5Des Moines County, IAIA38,0771959+1%

35▲2Cerro Gordo County, IAIA42,37219590%

36▼31Montgomery County, IAIA10,0021959+1%

37▲6O'Brien County, IAIA14,2201959+1%

38▲2Woodbury County, IAIA106,6491959+1%

39▲9Boone County, IAIA26,7991960+1%

40▲9Clayton County, IAIA16,8451960+1%

41▼38Howard County, IAIA9,4151960+1%

42▼16Lee County, IAIA32,3061960+1%

43▼20Wright County, IAIA12,8011960+1%

44▼3Hancock County, IAIA10,52819610%

45▼20Humboldt County, IAIA9,4091961+1%

46▲1Union County, IAIA11,8291962+1%

47▼12Grundy County, IAIA12,3611962+1%

48▼10Kossuth County, IAIA14,3221962+1%

49▲21Lucas County, IAIA8,8471962+1%

50▲10Winnebago County, IAIA10,25119620%

51▼7Winneshiek County, IAIA19,7331962+1%

52▲3Appanoose County, IAIA12,07719640%

53▲10Benton County, IAIA26,0041964+1%

54▲2Buena Vista County, IAIA20,4491964+1%

55▲9Carroll County, IAIA20,3031964+1%

56▼3Washington County, IAIA22,6671964+1%

57Cedar County, IAIA18,3591965+1%

58▲10Jasper County, IAIA38,15319650%

59▼9Mahaska County, IAIA21,8801965+1%

60▲6Black Hawk County, IAIA131,53219660%

61▼9Chickasaw County, IAIA11,6631966+1%

62▲18Jefferson County, IAIA15,2911966+1%

63▼5Louisa County, IAIA10,41619660%

64▲8Pottawattamie County, IAIA92,9961967+1%

65▼4Clay County, IAIA16,2021967+1%

66▲7Delaware County, IAIA17,6741967+1%

67▼2Lyon County, IAIA12,3541967+1%

68▼36Crawford County, IAIA16,2371968+1%

69▲5Guthrie County, IAIA10,7821968+1%

70▼8Henry County, IAIA19,3491968+1%

71▲4Iowa County, IAIA16,5041969+1%

72▼18Wayne County, IAIA6,7381969+1%

73▼2Decatur County, IAIA7,6551970+1%

74▼7Bremer County, IAIA25,2961970+1%

75▲7Dubuque County, IAIA99,3811970+1%

76▲3Jackson County, IAIA19,2881970+1%

77▼8Jones County, IAIA21,2531970+1%

78▲13Monroe County, IAIA7,4061970+1%

79▼20Muscatine County, IAIA41,8531970+1%

80▲3Van Buren County, IAIA7,1311970+1%

81▼4Poweshiek County, IAIA18,3681971+1%

82▼6Plymouth County, IAIA25,6971971+1%

83▲1Allamakee County, IAIA14,2381972+1%

84▲4Mills County, IAIA14,7931972+1%

85▲1Scott County, IAIA175,2591972+1%

86▼8Buchanan County, IAIA20,8831973+1%

87▼6Davis County, IAIA9,2301973+1%

88▼3Ringgold County, IAIA4,6421973+1%

89Sioux County, IAIA36,7741973+1%

90▼3Clarke County, IAIA9,5741975+1%

91▼1Marion County, IAIA34,1921975+1%

92▲1Madison County, IAIA17,2701977+2%

93▼1Linn County, IAIA232,0281978+1%

94Dickinson County, IAIA18,0771979+1%

95Polk County, IAIA516,5461982+1%

96Story County, IAIA101,2911984+1%

97Warren County, IAIA57,3311985+1%

98Johnson County, IAIA160,0441992+1%

99Dallas County, IAIA118,4572006+2%

SHOWING 1–99 OF 99

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES