RANKING · 2010 CENSUS · 98 SHOWN OF 98

Largest Welsh population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are Welsh ancestry, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 98 counties in Iowa that qualify, ranked against each other statewide. The median across all 98 is 97.

Welsh Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH POPULATIONVS –

01Polk County, IAIA516,5463,877–

02Linn County, IAIA232,0281,856–

03Johnson County, IAIA160,0441,048–

04Pottawattamie County, IAIA92,9961,047–

05Scott County, IAIA175,259856–

06Story County, IAIA101,291786–

07Black Hawk County, IAIA131,532659–

08Dallas County, IAIA118,457617–

09Wapello County, IAIA35,210539–

10Boone County, IAIA26,799505–

11Jasper County, IAIA38,153505–

12Clinton County, IAIA46,002428–

13Warren County, IAIA57,331423–

14Dubuque County, IAIA99,381377–

15Woodbury County, IAIA106,649324–

16Marion County, IAIA34,192317–

17Des Moines County, IAIA38,077314–

18Clay County, IAIA16,202280–

19Cerro Gordo County, IAIA42,372278–

20Muscatine County, IAIA41,853275–

21Benton County, IAIA26,004271–

22Marshall County, IAIA39,890265–

23Madison County, IAIA17,270252–

24Montgomery County, IAIA10,002245–

25Washington County, IAIA22,667242–

26Iowa County, IAIA16,504236–

27Henry County, IAIA19,349231–

28Mahaska County, IAIA21,880228–

29Louisa County, IAIA10,416220–

30Decatur County, IAIA7,655198–

31Cedar County, IAIA18,359194–

32Union County, IAIA11,829179–

33Jackson County, IAIA19,288175–

34Clayton County, IAIA16,845173–

35Webster County, IAIA36,838163–

36Appanoose County, IAIA12,077155–

37Guthrie County, IAIA10,782154–

38Mills County, IAIA14,793137–

39Harrison County, IAIA14,623131–

40Keokuk County, IAIA9,797129–

41Delaware County, IAIA17,674128–

42Plymouth County, IAIA25,697122–

43Monroe County, IAIA7,406120–

44Page County, IAIA14,856119–

45Wayne County, IAIA6,738116–

46Buchanan County, IAIA20,883115–

47Lee County, IAIA32,306114–

48Wright County, IAIA12,801107–

49Carroll County, IAIA20,30397–

50Cass County, IAIA12,96090–

51Howard County, IAIA9,41590–

52Buena Vista County, IAIA20,44989–

53Tama County, IAIA16,79689–

54Bremer County, IAIA25,29687–

55Hardin County, IAIA16,45583–

56Poweshiek County, IAIA18,36883–

57Jefferson County, IAIA15,29180–

58Fayette County, IAIA19,04778–

59Jones County, IAIA21,25375–

60Clarke County, IAIA9,57472–

61Dickinson County, IAIA18,07771–

62Grundy County, IAIA12,36171–

63Winnebago County, IAIA10,25170–

64Sac County, IAIA9,52567–

65Winneshiek County, IAIA19,73364–

66Butler County, IAIA14,04961–

67Cherokee County, IAIA11,36959–

68Floyd County, IAIA14,90158–

69Lucas County, IAIA8,84756–

70Van Buren County, IAIA7,13152–

71Franklin County, IAIA9,86851–

72O'Brien County, IAIA14,22049–

73Pocahontas County, IAIA6,81949–

74Emmet County, IAIA9,10747–

75Greene County, IAIA8,65847–

76Crawford County, IAIA16,23746–

77Davis County, IAIA9,23046–

78Chickasaw County, IAIA11,66343–

79Audubon County, IAIA5,50941–

80Fremont County, IAIA6,52240–

81Kossuth County, IAIA14,32238–

82Adams County, IAIA3,61737–

83Lyon County, IAIA12,35435–

84Monona County, IAIA8,53934–

85Hancock County, IAIA10,52833–

86Shelby County, IAIA11,68933–

87Hamilton County, IAIA14,94432–

88Worth County, IAIA7,33831–

89Ida County, IAIA6,77726–

90Taylor County, IAIA5,83526–

91Calhoun County, IAIA9,56224–

92Ringgold County, IAIA4,64222–

93Adair County, IAIA7,40320–

94Humboldt County, IAIA9,40918–

95Mitchell County, IAIA10,65016–

96Palo Alto County, IAIA8,89916–

97Sioux County, IAIA36,77412–

98Allamakee County, IAIA14,23810–

SHOWING 1–98 OF 98

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