RANKING · 1990 CENSUS · 99 SHOWN OF 99

Newest housing stock, Iowa counties · 1990

Iowa counties ranked by median year housing was built (1990 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 1950.

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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 –

01Johnson County, IAIA160,0441968–

02Warren County, IAIA57,3311968–

03Story County, IAIA101,2911964–

04Dickinson County, IAIA18,0771962–

05Marion County, IAIA34,1921962–

06Polk County, IAIA516,5461962–

07Linn County, IAIA232,0281961–

08Louisa County, IAIA10,4161961–

09Scott County, IAIA175,2591961–

10Poweshiek County, IAIA18,3681960–

11Clarke County, IAIA9,5741959–

12Dallas County, IAIA118,4571959–

13Mills County, IAIA14,7931959–

14Appanoose County, IAIA12,0771958–

15Black Hawk County, IAIA131,5321957–

16Buchanan County, IAIA20,8831957–

17Henry County, IAIA19,3491957–

18Delaware County, IAIA17,6741956–

19Dubuque County, IAIA99,3811956–

20Jasper County, IAIA38,1531956–

21Muscatine County, IAIA41,8531956–

22Pottawattamie County, IAIA92,9961955–

23Winnebago County, IAIA10,2511955–

24Bremer County, IAIA25,2961954–

25Clay County, IAIA16,2021954–

26Davis County, IAIA9,2301954–

27Jackson County, IAIA19,2881954–

28Sioux County, IAIA36,7741954–

29Decatur County, IAIA7,6551953–

30Allamakee County, IAIA14,2381953–

31Cerro Gordo County, IAIA42,3721953–

32Crawford County, IAIA16,2371953–

33Hancock County, IAIA10,5281953–

34Jones County, IAIA21,2531953–

35Mahaska County, IAIA21,8801953–

36Buena Vista County, IAIA20,4491952–

37Carroll County, IAIA20,3031952–

38Floyd County, IAIA14,9011952–

39Jefferson County, IAIA15,2911952–

40Marshall County, IAIA39,8901952–

41Monroe County, IAIA7,4061952–

42Plymouth County, IAIA25,6971952–

43Emmet County, IAIA9,1071951–

44Hardin County, IAIA16,4551951–

45Humboldt County, IAIA9,4091951–

46Webster County, IAIA36,8381951–

47Clinton County, IAIA46,0021950–

48Grundy County, IAIA12,3611950–

49Hamilton County, IAIA14,9441950–

50Palo Alto County, IAIA8,8991950–

51Union County, IAIA11,8291949–

52Des Moines County, IAIA38,0771949–

53Kossuth County, IAIA14,3221949–

54Lee County, IAIA32,3061949–

55Wright County, IAIA12,8011949–

56Cedar County, IAIA18,3591948–

57Cherokee County, IAIA11,3691948–

58Chickasaw County, IAIA11,6631948–

59Guthrie County, IAIA10,7821948–

60Lucas County, IAIA8,8471948–

61Wapello County, IAIA35,2101948–

62Woodbury County, IAIA106,6491948–

63Benton County, IAIA26,0041947–

64Butler County, IAIA14,0491947–

65Calhoun County, IAIA9,5621947–

66Fremont County, IAIA6,5221947–

67O'Brien County, IAIA14,2201946–

68Ringgold County, IAIA4,6421946–

69Mitchell County, IAIA10,6501945–

70Cass County, IAIA12,9601945–

71Iowa County, IAIA16,5041945–

72Madison County, IAIA17,2701945–

73Shelby County, IAIA11,6891945–

74Lyon County, IAIA12,3541944–

75Page County, IAIA14,8561944–

76Sac County, IAIA9,5251944–

77Washington County, IAIA22,6671944–

78Wayne County, IAIA6,7381944–

79Winneshiek County, IAIA19,7331944–

80Boone County, IAIA26,7991943–

81Franklin County, IAIA9,8681943–

82Howard County, IAIA9,4151943–

83Osceola County, IAIA5,9801942–

84Pocahontas County, IAIA6,8191942–

85Van Buren County, IAIA7,1311941–

86Worth County, IAIA7,3381940–

87Taylor County, IAIA5,8351939–

88Greene County, IAIA8,6581939–

89Adair County, IAIA7,4031939–

90Adams County, IAIA3,6171939–

91Audubon County, IAIA5,5091939–

92Clayton County, IAIA16,8451939–

93Fayette County, IAIA19,0471939–

94Harrison County, IAIA14,6231939–

95Ida County, IAIA6,7771939–

96Keokuk County, IAIA9,7971939–

97Monona County, IAIA8,5391939–

98Montgomery County, IAIA10,0021939–

99Tama County, IAIA16,7961939–

SHOWING 1–99 OF 99

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