RANKING · 2020 CENSUS · 99 SHOWN OF 99

Newest housing stock, Iowa counties · 2020

Iowa counties ranked by median year housing was built (2020 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 1990

01Dallas County, IAIA118,4572003+2%

02Johnson County, IAIA160,0441987+1%

03Story County, IAIA101,2911981+1%

04Warren County, IAIA57,3311981+1%

05Polk County, IAIA516,5461978+1%

06Dickinson County, IAIA18,0771977+1%

07Linn County, IAIA232,0281976+1%

08Madison County, IAIA17,2701976+2%

09Marion County, IAIA34,1921973+1%

10Monroe County, IAIA7,4061973+1%

11Clarke County, IAIA9,5741972+1%

12Mills County, IAIA14,7931972+1%

13Sioux County, IAIA36,7741972+1%

14Allamakee County, IAIA14,2381971+1%

15Ringgold County, IAIA4,6421971+1%

16Scott County, IAIA175,2591971+1%

17Davis County, IAIA9,2301970+1%

18Dubuque County, IAIA99,3811970+1%

19Van Buren County, IAIA7,1311970+1%

20Poweshiek County, IAIA18,3681969+0%

21Buchanan County, IAIA20,8831969+1%

22Jackson County, IAIA19,2881969+1%

23Jefferson County, IAIA15,2911969+1%

24Guthrie County, IAIA10,7821968+1%

25Iowa County, IAIA16,5041968+1%

26Plymouth County, IAIA25,6971968+1%

27Decatur County, IAIA7,6551967+1%

28Pottawattamie County, IAIA92,9961967+1%

29Delaware County, IAIA17,6741967+1%

30Black Hawk County, IAIA131,5321966+0%

31Bremer County, IAIA25,2961966+1%

32Jasper County, IAIA38,1531966+1%

33Jones County, IAIA21,2531966+1%

34Lucas County, IAIA8,8471966+1%

35Benton County, IAIA26,0041965+1%

36Carroll County, IAIA20,3031965+1%

37Lyon County, IAIA12,3541965+1%

38Clay County, IAIA16,2021964+1%

39Henry County, IAIA19,3491964+0%

40Appanoose County, IAIA12,0771963+0%

41Buena Vista County, IAIA20,4491963+1%

42Cedar County, IAIA18,3591963+1%

43Louisa County, IAIA10,4161963+0%

44Muscatine County, IAIA41,8531963+0%

45Winnebago County, IAIA10,2511963+0%

46Chickasaw County, IAIA11,6631962+1%

47Washington County, IAIA22,6671962+1%

48Wayne County, IAIA6,7381962+1%

49Union County, IAIA11,8291960+1%

50Boone County, IAIA26,7991960+1%

51Clayton County, IAIA16,8451960+1%

52Mahaska County, IAIA21,8801960+0%

53Palo Alto County, IAIA8,8991960+1%

54Adair County, IAIA7,4031959+1%

55Calhoun County, IAIA9,5621959+1%

56Hancock County, IAIA10,5281958+0%

57Marshall County, IAIA39,8901958+0%

58O'Brien County, IAIA14,2201958+1%

59Winneshiek County, IAIA19,7331958+1%

60Cerro Gordo County, IAIA42,3721957+0%

61Kossuth County, IAIA14,3221957+0%

62Webster County, IAIA36,8381957+0%

63Woodbury County, IAIA106,6491957+0%

64Des Moines County, IAIA38,0771956+0%

65Mitchell County, IAIA10,6501956+1%

66Clinton County, IAIA46,0021956+0%

67Crawford County, IAIA16,2371956+0%

68Floyd County, IAIA14,9011956+0%

69Fremont County, IAIA6,5221956+0%

70Grundy County, IAIA12,3611956+0%

71Wapello County, IAIA35,2101956+0%

72Fayette County, IAIA19,0471955+1%

73Humboldt County, IAIA9,4091955+0%

74Lee County, IAIA32,3061955+0%

75Osceola County, IAIA5,9801955+1%

76Shelby County, IAIA11,6891955+1%

77Butler County, IAIA14,0491954+0%

78Emmet County, IAIA9,1071954+0%

79Franklin County, IAIA9,8681954+1%

80Hamilton County, IAIA14,9441954+0%

81Page County, IAIA14,8561954+1%

82Wright County, IAIA12,8011954+0%

83Cass County, IAIA12,9601953+0%

84Cherokee County, IAIA11,3691953+0%

85Greene County, IAIA8,6581952+1%

86Monona County, IAIA8,5391952+1%

87Tama County, IAIA16,7961952+1%

88Hardin County, IAIA16,4551951+0%

89Sac County, IAIA9,5251951+0%

90Worth County, IAIA7,3381951+1%

91Taylor County, IAIA5,8351950+1%

92Audubon County, IAIA5,5091950+1%

93Harrison County, IAIA14,6231950+1%

94Howard County, IAIA9,4151949+0%

95Ida County, IAIA6,7771949+1%

96Montgomery County, IAIA10,0021949+1%

97Pocahontas County, IAIA6,8191949+0%

98Keokuk County, IAIA9,7971947+0%

99Adams County, IAIA3,6171944+0%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS