RANKING · 2020 CENSUS · 71 SHOWN OF 71

Largest Korean population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Korean, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 71 counties in Iowa that qualify, ranked against each other statewide. The median across all 71 is 20.

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 POPULATIONVS –

01Johnson County, IAIA160,0441,387–

02Story County, IAIA101,291763–

03Polk County, IAIA516,546674–

04Linn County, IAIA232,028427–

05Scott County, IAIA175,259404–

06Black Hawk County, IAIA131,532397–

07Dallas County, IAIA118,457346–

08Webster County, IAIA36,838152–

09Marion County, IAIA34,192129–

10Cerro Gordo County, IAIA42,372120–

11Woodbury County, IAIA106,649117–

12Poweshiek County, IAIA18,36894–

13Lee County, IAIA32,30684–

14Winneshiek County, IAIA19,73383–

15Cherokee County, IAIA11,36982–

16Dubuque County, IAIA99,38174–

17Buchanan County, IAIA20,88373–

18Crawford County, IAIA16,23768–

19Warren County, IAIA57,33168–

20Muscatine County, IAIA41,85367–

21Henry County, IAIA19,34966–

22Carroll County, IAIA20,30351–

23Cedar County, IAIA18,35951–

24Clay County, IAIA16,20249–

25Humboldt County, IAIA9,40945–

26Wapello County, IAIA35,21043–

27Boone County, IAIA26,79942–

28Jackson County, IAIA19,28841–

29Floyd County, IAIA14,90139–

30Buena Vista County, IAIA20,44935–

31Pottawattamie County, IAIA92,99629–

32Sac County, IAIA9,52529–

33Plymouth County, IAIA25,69727–

34Decatur County, IAIA7,65524–

35Bremer County, IAIA25,29621–

36Hardin County, IAIA16,45520–

37Kossuth County, IAIA14,32219–

38Des Moines County, IAIA38,07718–

39Allamakee County, IAIA14,23818–

40Appanoose County, IAIA12,07716–

41Mitchell County, IAIA10,65015–

42Jasper County, IAIA38,15315–

43Madison County, IAIA17,27014–

44Palo Alto County, IAIA8,89913–

45Marshall County, IAIA39,89012–

46Clinton County, IAIA46,00211–

47Davis County, IAIA9,23011–

48Page County, IAIA14,85610–

49Union County, IAIA11,8299–

50Butler County, IAIA14,0499–

51Mills County, IAIA14,7939–

52Worth County, IAIA7,3389–

53Benton County, IAIA26,0048–

54Washington County, IAIA22,6676–

55Greene County, IAIA8,6585–

56Clayton County, IAIA16,8455–

57Fayette County, IAIA19,0475–

58Calhoun County, IAIA9,5624–

59Hancock County, IAIA10,5284–

60Winnebago County, IAIA10,2514–

61Grundy County, IAIA12,3613–

62Harrison County, IAIA14,6233–

63Lyon County, IAIA12,3543–

64Mahaska County, IAIA21,8803–

65Ringgold County, IAIA4,6423–

66Sioux County, IAIA36,7743–

67Audubon County, IAIA5,5092–

68Chickasaw County, IAIA11,6632–

69Dickinson County, IAIA18,0771–

70Hamilton County, IAIA14,9441–

71O'Brien County, IAIA14,2201–

SHOWING 1–71 OF 71

Download CSV (full list, 71 rows)

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