RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest Asian population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Asian (2020 American Community Survey). A concentration measure: Asian residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDHighest Asian household income Highest Black household income Highest Hispanic household income Highest White (non-Hispanic) household income Largest White (non-Hispanic) population Highest White (non-Hispanic) population share

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPASIANVS 2000

01Buena Vista County, IAIA20,4499.1%+113%

02Johnson County, IAIA160,0445.6%+36%

03Story County, IAIA101,2915.5%+8%

04Dallas County, IAIA118,4575.0%+633%

05Polk County, IAIA516,5464.9%+89%

06Marshall County, IAIA39,8903.8%+383%

07Jefferson County, IAIA15,2913.2%+88%

08Woodbury County, IAIA106,6492.8%+16%

09Scott County, IAIA175,2592.8%+77%

10Black Hawk County, IAIA131,5322.6%+167%

11Louisa County, IAIA10,4162.4%+1141%

12Linn County, IAIA232,0282.3%+70%

13Henry County, IAIA19,3492.2%+17%

14Hamilton County, IAIA14,9442.1%+43%

15Floyd County, IAIA14,9011.9%+346%

16Crawford County, IAIA16,2371.8%+274%

17Wapello County, IAIA35,2101.8%+172%

18Cerro Gordo County, IAIA42,3721.2%+82%

19Marion County, IAIA34,1921.2%+17%

20Poweshiek County, IAIA18,3681.2%+11%

21Mahaska County, IAIA21,8801.1%+32%

22Dubuque County, IAIA99,3811.0%+80%

23Des Moines County, IAIA38,0771.0%+77%

24Muscatine County, IAIA41,8530.9%+14%

25Winneshiek County, IAIA19,7330.9%+9%

26Winnebago County, IAIA10,2510.9%+27%

27Clarke County, IAIA9,5740.8%+137%

28Pottawattamie County, IAIA92,9960.8%+72%

29Webster County, IAIA36,8380.8%+21%

30Bremer County, IAIA25,2960.8%+59%

31Page County, IAIA14,8560.8%+61%

32Warren County, IAIA57,3310.7%+90%

33Clay County, IAIA16,2020.6%−22%

34Sioux County, IAIA36,7740.6%+4%

35Jasper County, IAIA38,1530.6%+33%

36Appanoose County, IAIA12,0770.6%+114%

37O'Brien County, IAIA14,2200.6%+12%

38Greene County, IAIA8,6580.5%+136%

39Clinton County, IAIA46,0020.5%+1%

40Union County, IAIA11,8290.5%+113%

41Wright County, IAIA12,8010.5%+175%

42Decatur County, IAIA7,6550.5%−18%

43Hardin County, IAIA16,4550.5%+62%

44Iowa County, IAIA16,5040.5%+68%

45Madison County, IAIA17,2700.5%+181%

46Washington County, IAIA22,6670.5%+103%

47Franklin County, IAIA9,8680.5%+208%

48Cherokee County, IAIA11,3690.5%+14%

49Kossuth County, IAIA14,3220.5%+39%

50Tama County, IAIA16,7960.5%+164%

51Dickinson County, IAIA18,0770.5%+156%

52Plymouth County, IAIA25,6970.4%+65%

53Mitchell County, IAIA10,6500.4%+157%

54Shelby County, IAIA11,6890.4%+53%

55Lee County, IAIA32,3060.4%+5%

56Palo Alto County, IAIA8,8990.4%+35%

57Pocahontas County, IAIA6,8190.4%+137%

58Fayette County, IAIA19,0470.4%+6%

59Boone County, IAIA26,7990.4%+72%

60Wayne County, IAIA6,7380.4%+149%

61Carroll County, IAIA20,3030.4%+7%

62Adams County, IAIA3,6170.4%+97%

63Worth County, IAIA7,3380.3%+151%

64Guthrie County, IAIA10,7820.3%+147%

65Emmet County, IAIA9,1070.3%+14%

66Osceola County, IAIA5,9800.3%+70%

67Harrison County, IAIA14,6230.3%+111%

68Lucas County, IAIA8,8470.3%+17%

69Van Buren County, IAIA7,1310.3%+30%

70Mills County, IAIA14,7930.3%+15%

71Cedar County, IAIA18,3590.3%+15%

72Sac County, IAIA9,5250.3%+128%

73Benton County, IAIA26,0040.3%+86%

74Monona County, IAIA8,5390.3%+158%

75Adair County, IAIA7,4030.3%+33%

76Allamakee County, IAIA14,2380.3%+10%

77Howard County, IAIA9,4150.3%+67%

78Jones County, IAIA21,2530.3%+29%

79Clayton County, IAIA16,8450.3%+158%

80Cass County, IAIA12,9600.3%+96%

81Ida County, IAIA6,7770.3%+6%

82Taylor County, IAIA5,8350.3%−16%

83Buchanan County, IAIA20,8830.3%−37%

84Calhoun County, IAIA9,5620.2%+34%

85Jackson County, IAIA19,2880.2%+152%

86Chickasaw County, IAIA11,6630.2%−10%

87Hancock County, IAIA10,5280.2%−24%

88Delaware County, IAIA17,6740.2%+58%

89Humboldt County, IAIA9,4090.2%−5%

90Monroe County, IAIA7,4060.2%−47%

91Montgomery County, IAIA10,0020.2%−17%

92Lyon County, IAIA12,3540.2%+69%

93Butler County, IAIA14,0490.2%−4%

94Grundy County, IAIA12,3610.2%−31%

95Ringgold County, IAIA4,6420.2%+4%

96Davis County, IAIA9,2300.2%−17%

97Keokuk County, IAIA9,7970.2%−30%

98Fremont County, IAIA6,5220.1%−43%

99Audubon County, IAIA5,5090.1%−63%

SHOWING 1–99 OF 99

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