RANKING · 2024 ACS · 94 SHOWN OF 94

Highest British population share, Iowa counties

Iowa counties ranked by the share of all residents who are British ancestry (2023 American Community Survey). A concentration measure: British residents as a percentage of total population. This list covers the 94 counties in Iowa that qualify, ranked against each other statewide.

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

RANKPLACESTATEPOPBRITISH SHAREVS 2000

01Greene County, IAIA8,6580.9%–

02Jefferson County, IAIA15,2910.7%–

03Story County, IAIA101,2910.7%–

04Des Moines County, IAIA38,0770.6%–

05Clarke County, IAIA9,5740.6%–

06Poweshiek County, IAIA18,3680.5%–

07Madison County, IAIA17,2700.5%–

08Benton County, IAIA26,0040.5%–

09Lucas County, IAIA8,8470.5%–

10Emmet County, IAIA9,1070.5%–

11Cedar County, IAIA18,3590.5%–

12Linn County, IAIA232,0280.5%–

13Wapello County, IAIA35,2100.4%–

14Polk County, IAIA516,5460.4%–

15Van Buren County, IAIA7,1310.4%–

16Johnson County, IAIA160,0440.4%–

17Clay County, IAIA16,2020.4%–

18Franklin County, IAIA9,8680.4%–

19Washington County, IAIA22,6670.4%–

20Cerro Gordo County, IAIA42,3720.3%–

21Howard County, IAIA9,4150.3%–

22Marion County, IAIA34,1920.3%–

23Harrison County, IAIA14,6230.3%–

24Muscatine County, IAIA41,8530.3%–

25Butler County, IAIA14,0490.3%–

26Marshall County, IAIA39,8900.3%–

27Pottawattamie County, IAIA92,9960.3%–

28Louisa County, IAIA10,4160.3%–

29Webster County, IAIA36,8380.3%–

30Bremer County, IAIA25,2960.3%–

31Warren County, IAIA57,3310.3%–

32Fremont County, IAIA6,5220.3%–

33Jasper County, IAIA38,1530.3%–

34Buena Vista County, IAIA20,4490.3%–

35Cass County, IAIA12,9600.3%–

36Carroll County, IAIA20,3030.3%–

37Mills County, IAIA14,7930.3%–

38Boone County, IAIA26,7990.2%–

39Montgomery County, IAIA10,0020.2%–

40Dickinson County, IAIA18,0770.2%–

41Sac County, IAIA9,5250.2%–

42Scott County, IAIA175,2590.2%–

43Cherokee County, IAIA11,3690.2%–

44Wayne County, IAIA6,7380.2%–

45Crawford County, IAIA16,2370.2%–

46Clayton County, IAIA16,8450.2%–

47Shelby County, IAIA11,6890.2%–

48Black Hawk County, IAIA131,5320.2%–

49Lee County, IAIA32,3060.2%–

50Lyon County, IAIA12,3540.2%–

51Monroe County, IAIA7,4060.2%–

52Woodbury County, IAIA106,6490.2%–

53Mitchell County, IAIA10,6500.2%–

54Union County, IAIA11,8290.2%–

55Clinton County, IAIA46,0020.2%–

56Wright County, IAIA12,8010.2%–

57Grundy County, IAIA12,3610.2%–

58Appanoose County, IAIA12,0770.2%–

59Tama County, IAIA16,7960.2%–

60Dallas County, IAIA118,4570.2%–

61Dubuque County, IAIA99,3810.2%–

62Plymouth County, IAIA25,6970.1%–

63Floyd County, IAIA14,9010.1%–

64Winnebago County, IAIA10,2510.1%–

65Guthrie County, IAIA10,7820.1%–

66Henry County, IAIA19,3490.1%–

67Chickasaw County, IAIA11,6630.1%–

68Decatur County, IAIA7,6550.1%–

69Winneshiek County, IAIA19,7330.1%–

70Iowa County, IAIA16,5040.1%–

71Audubon County, IAIA5,5090.1%–

72Buchanan County, IAIA20,8830.1%–

73Page County, IAIA14,8560.1%–

74Sioux County, IAIA36,7740.1%–

75Kossuth County, IAIA14,3220.1%–

76Monona County, IAIA8,5390.1%–

77Taylor County, IAIA5,8350.1%–

78Hardin County, IAIA16,4550.1%–

79Hamilton County, IAIA14,9440.1%–

80Mahaska County, IAIA21,8800.1%–

81Worth County, IAIA7,3380.1%–

82O'Brien County, IAIA14,2200.1%–

83Osceola County, IAIA5,9800.0%–

84Jones County, IAIA21,2530.0%–

85Ida County, IAIA6,7770.0%–

86Pocahontas County, IAIA6,8190.0%–

87Jackson County, IAIA19,2880.0%–

88Calhoun County, IAIA9,5620.0%–

89Adair County, IAIA7,4030.0%–

90Humboldt County, IAIA9,4090.0%–

91Fayette County, IAIA19,0470.0%–

92Ringgold County, IAIA4,6420.0%–

93Palo Alto County, IAIA8,8990.0%–

94Allamakee County, IAIA14,2380.0%–

SHOWING 1–94 OF 94

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES