RANKING · 2020 CENSUS · 71 SHOWN OF 71

Highest Korean population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Korean (2020 American Community Survey). A concentration measure: Korean residents as a percentage of total population. This list covers the 71 counties in Iowa that qualify, ranked against each other statewide.

Korean Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest Chinese population Highest Chinese population share Largest Taiwanese population Highest Taiwanese population share Largest Hmong population Highest Hmong population share

RANKPLACESTATEPOPKOREAN SHAREVS –

01Johnson County, IAIA160,0440.9%–

02Story County, IAIA101,2910.8%–

03Cherokee County, IAIA11,3690.7%–

04Poweshiek County, IAIA18,3680.5%–

05Humboldt County, IAIA9,4090.5%–

06Webster County, IAIA36,8380.4%–

07Winneshiek County, IAIA19,7330.4%–

08Crawford County, IAIA16,2370.4%–

09Marion County, IAIA34,1920.4%–

10Dallas County, IAIA118,4570.4%–

11Buchanan County, IAIA20,8830.3%–

12Henry County, IAIA19,3490.3%–

13Clay County, IAIA16,2020.3%–

14Decatur County, IAIA7,6550.3%–

15Black Hawk County, IAIA131,5320.3%–

16Sac County, IAIA9,5250.3%–

17Cerro Gordo County, IAIA42,3720.3%–

18Cedar County, IAIA18,3590.3%–

19Carroll County, IAIA20,3030.3%–

20Floyd County, IAIA14,9010.2%–

21Lee County, IAIA32,3060.2%–

22Scott County, IAIA175,2590.2%–

23Jackson County, IAIA19,2880.2%–

24Linn County, IAIA232,0280.2%–

25Buena Vista County, IAIA20,4490.2%–

26Boone County, IAIA26,7990.2%–

27Muscatine County, IAIA41,8530.2%–

28Palo Alto County, IAIA8,8990.1%–

29Mitchell County, IAIA10,6500.1%–

30Polk County, IAIA516,5460.1%–

31Warren County, IAIA57,3310.1%–

32Allamakee County, IAIA14,2380.1%–

33Appanoose County, IAIA12,0770.1%–

34Kossuth County, IAIA14,3220.1%–

35Davis County, IAIA9,2300.1%–

36Wapello County, IAIA35,2100.1%–

37Worth County, IAIA7,3380.1%–

38Hardin County, IAIA16,4550.1%–

39Woodbury County, IAIA106,6490.1%–

40Plymouth County, IAIA25,6970.1%–

41Madison County, IAIA17,2700.1%–

42Bremer County, IAIA25,2960.1%–

43Dubuque County, IAIA99,3810.1%–

44Union County, IAIA11,8290.1%–

45Page County, IAIA14,8560.1%–

46Butler County, IAIA14,0490.1%–

47Ringgold County, IAIA4,6420.1%–

48Mills County, IAIA14,7930.1%–

49Greene County, IAIA8,6580.1%–

50Des Moines County, IAIA38,0770.0%–

51Calhoun County, IAIA9,5620.0%–

52Jasper County, IAIA38,1530.0%–

53Winnebago County, IAIA10,2510.0%–

54Hancock County, IAIA10,5280.0%–

55Audubon County, IAIA5,5090.0%–

56Benton County, IAIA26,0040.0%–

57Pottawattamie County, IAIA92,9960.0%–

58Marshall County, IAIA39,8900.0%–

59Clayton County, IAIA16,8450.0%–

60Washington County, IAIA22,6670.0%–

61Fayette County, IAIA19,0470.0%–

62Lyon County, IAIA12,3540.0%–

63Grundy County, IAIA12,3610.0%–

64Clinton County, IAIA46,0020.0%–

65Harrison County, IAIA14,6230.0%–

66Chickasaw County, IAIA11,6630.0%–

67Mahaska County, IAIA21,8800.0%–

68Sioux County, IAIA36,7740.0%–

69O'Brien County, IAIA14,2200.0%–

70Hamilton County, IAIA14,9440.0%–

71Dickinson County, IAIA18,0770.0%–

SHOWING 1–71 OF 71

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UPDATED 2026-07-24 · DATA: US CENSUS BUREAU DECENNIAL CENSUS