RANKING · 2024 ACS · 99 SHOWN OF 99

Largest senior population, Iowa counties

Iowa counties home to the most residents aged 65 and over as of 2024. Ranked by number of people, not the senior share. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 3,306.

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS 2000

01Polk County, IAIA516,54670,275+68%

02Linn County, IAIA232,02839,802+70%

03Scott County, IAIA175,25930,617+64%

04Black Hawk County, IAIA131,53223,138+29%

05Johnson County, IAIA160,04420,834+152%

06Dubuque County, IAIA99,38119,152+46%

07Pottawattamie County, IAIA92,99617,508+46%

08Woodbury County, IAIA106,64916,864+22%

09▲1Dallas County, IAIA118,45713,893+207%

10▼1Story County, IAIA101,29113,275+69%

11Cerro Gordo County, IAIA42,37210,036+22%

12Clinton County, IAIA46,0029,378+18%

13Warren County, IAIA57,3319,112+89%

14Des Moines County, IAIA38,0778,180+16%

15Muscatine County, IAIA41,8537,691+42%

16▲2Jasper County, IAIA38,1537,500+26%

17▲2Webster County, IAIA36,8387,323+5%

18▼1Lee County, IAIA32,3067,309+16%

19▼3Marshall County, IAIA39,8907,301+13%

20▲1Marion County, IAIA34,1926,515+28%

21▼1Wapello County, IAIA35,2106,496+1%

22Sioux County, IAIA36,7745,866+23%

23Boone County, IAIA26,7995,324+24%

24▲1Plymouth County, IAIA25,6975,096+29%

25▲2Benton County, IAIA26,0045,093+31%

26Dickinson County, IAIA18,0775,079+50%

27▼3Bremer County, IAIA25,2964,980+33%

28▲3Winneshiek County, IAIA19,7334,632+38%

29▼1Washington County, IAIA22,6674,538+23%

30▲2Jones County, IAIA21,2534,459+39%

31▼1Fayette County, IAIA19,0474,424+6%

32▼3Carroll County, IAIA20,3034,361+9%

33▲1Jackson County, IAIA19,2884,304+23%

34▲2Clayton County, IAIA16,8454,260+23%

35Mahaska County, IAIA21,8804,199+15%

36▼3Jefferson County, IAIA15,2914,192+88%

37Henry County, IAIA19,3494,031+35%

38▲1Hardin County, IAIA16,4553,968+2%

39▼1Poweshiek County, IAIA18,3683,967+20%

40▲1Cedar County, IAIA18,3593,859+31%

41▼1Buchanan County, IAIA20,8833,855+26%

42▲2Delaware County, IAIA17,6743,784+37%

43Clay County, IAIA16,2023,686+18%

44▼2Kossuth County, IAIA14,3223,686+7%

45▲1Page County, IAIA14,8563,664+9%

46▼1Tama County, IAIA16,7963,537+4%

47▲1Floyd County, IAIA14,9013,526+9%

48▲1Buena Vista County, IAIA20,4493,373−2%

49▲1Iowa County, IAIA16,5043,350+25%

50▼3Butler County, IAIA14,0493,306+7%

51Allamakee County, IAIA14,2383,258+21%

52Hamilton County, IAIA14,9443,157+7%

53Cass County, IAIA12,9603,0610%

54▲2Madison County, IAIA17,2702,995+41%

55▼1O'Brien County, IAIA14,2202,989−6%

56▼1Harrison County, IAIA14,6232,946+7%

57Crawford County, IAIA16,2372,928+1%

58▲3Mills County, IAIA14,7932,921+59%

59Cherokee County, IAIA11,3692,885+9%

60▼2Appanoose County, IAIA12,0772,882+5%

61▼1Wright County, IAIA12,8012,827−7%

62Shelby County, IAIA11,6892,724+1%

63▲1Chickasaw County, IAIA11,6632,671+14%

64▼1Grundy County, IAIA12,3612,600+9%

65▲2Guthrie County, IAIA10,7822,591+11%

66▼1Hancock County, IAIA10,5282,554+18%

67▼1Union County, IAIA11,8292,490+8%

68▲2Montgomery County, IAIA10,0022,361−1%

69Sac County, IAIA9,5252,351−10%

70▲1Winnebago County, IAIA10,2512,341+6%

71▲1Calhoun County, IAIA9,5622,320−6%

72▲3Lyon County, IAIA12,3542,320+5%

73▼5Mitchell County, IAIA10,6502,290−2%

74▲3Keokuk County, IAIA9,7972,233−3%

75▲1Emmet County, IAIA9,1072,230+4%

76▼3Franklin County, IAIA9,8682,147−2%

77▲1Louisa County, IAIA10,4162,146+25%

78▲2Greene County, IAIA8,6582,119−5%

79▼5Monona County, IAIA8,5392,084−13%

80▲1Humboldt County, IAIA9,4092,075−5%

81▼2Palo Alto County, IAIA8,8991,970−9%

82Howard County, IAIA9,4151,932−3%

83Clarke County, IAIA9,5741,924+23%

84Lucas County, IAIA8,8471,917+5%

85▲2Van Buren County, IAIA7,1311,707+14%

86▼1Adair County, IAIA7,4031,684−8%

87▲4Worth County, IAIA7,3381,684+10%

88▼2Pocahontas County, IAIA6,8191,682−11%

89▲1Davis County, IAIA9,2301,661+12%

90▲2Decatur County, IAIA7,6551,639+7%

91▲2Fremont County, IAIA6,5221,575−1%

92▼4Monroe County, IAIA7,4061,548−1%

93▼4Ida County, IAIA6,7771,533−10%

94▲2Wayne County, IAIA6,7381,475−8%

95Audubon County, IAIA5,5091,425−11%

96▲1Osceola County, IAIA5,9801,389+5%

97▼3Taylor County, IAIA5,8351,342−14%

98Ringgold County, IAIA4,6421,099−16%

99Adams County, IAIA3,617876−9%

SHOWING 1–99 OF 99

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