RANKING · 2010 CENSUS · 95 SHOWN OF 95

Highest British population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are British ancestry (2010 American Community Survey). A concentration measure: British residents as a percentage of total population. This list covers the 95 counties in Iowa that qualify, ranked against each other statewide. The median across all 95 is 0.2%.

British 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

RANKPLACESTATEPOPBRITISH SHAREVS –

01Lucas County, IAIA8,8471.1%–

02Washington County, IAIA22,6670.8%–

03Pocahontas County, IAIA6,8190.5%–

04Johnson County, IAIA160,0440.5%–

05Page County, IAIA14,8560.5%–

06Madison County, IAIA17,2700.5%–

07Story County, IAIA101,2910.5%–

08Dickinson County, IAIA18,0770.5%–

09Monona County, IAIA8,5390.4%–

10Jones County, IAIA21,2530.4%–

11Fayette County, IAIA19,0470.4%–

12Mills County, IAIA14,7930.4%–

13Delaware County, IAIA17,6740.4%–

14Hamilton County, IAIA14,9440.4%–

15Wright County, IAIA12,8010.4%–

16Jefferson County, IAIA15,2910.4%–

17Fremont County, IAIA6,5220.4%–

18Marshall County, IAIA39,8900.4%–

19Marion County, IAIA34,1920.4%–

20Dallas County, IAIA118,4570.4%–

21Linn County, IAIA232,0280.4%–

22Polk County, IAIA516,5460.3%–

23Poweshiek County, IAIA18,3680.3%–

24Greene County, IAIA8,6580.3%–

25Mahaska County, IAIA21,8800.3%–

26Cass County, IAIA12,9600.3%–

27Henry County, IAIA19,3490.3%–

28Plymouth County, IAIA25,6970.3%–

29Boone County, IAIA26,7990.3%–

30Scott County, IAIA175,2590.3%–

31Ringgold County, IAIA4,6420.3%–

32Mitchell County, IAIA10,6500.3%–

33Adams County, IAIA3,6170.3%–

34Pottawattamie County, IAIA92,9960.3%–

35Winneshiek County, IAIA19,7330.2%–

36Crawford County, IAIA16,2370.2%–

37Benton County, IAIA26,0040.2%–

38Jackson County, IAIA19,2880.2%–

39Guthrie County, IAIA10,7820.2%–

40Kossuth County, IAIA14,3220.2%–

41Union County, IAIA11,8290.2%–

42Warren County, IAIA57,3310.2%–

43Des Moines County, IAIA38,0770.2%–

44Montgomery County, IAIA10,0020.2%–

45Clarke County, IAIA9,5740.2%–

46Monroe County, IAIA7,4060.2%–

47Iowa County, IAIA16,5040.2%–

48Lee County, IAIA32,3060.2%–

49Floyd County, IAIA14,9010.2%–

50Keokuk County, IAIA9,7970.2%–

51Buchanan County, IAIA20,8830.2%–

52Cedar County, IAIA18,3590.2%–

53Chickasaw County, IAIA11,6630.2%–

54Black Hawk County, IAIA131,5320.2%–

55Wayne County, IAIA6,7380.2%–

56Adair County, IAIA7,4030.2%–

57Sioux County, IAIA36,7740.2%–

58Butler County, IAIA14,0490.2%–

59Taylor County, IAIA5,8350.2%–

60Decatur County, IAIA7,6550.2%–

61Sac County, IAIA9,5250.2%–

62Woodbury County, IAIA106,6490.1%–

63Howard County, IAIA9,4150.1%–

64Jasper County, IAIA38,1530.1%–

65Dubuque County, IAIA99,3810.1%–

66Buena Vista County, IAIA20,4490.1%–

67Bremer County, IAIA25,2960.1%–

68Muscatine County, IAIA41,8530.1%–

69Worth County, IAIA7,3380.1%–

70Cerro Gordo County, IAIA42,3720.1%–

71Audubon County, IAIA5,5090.1%–

72Wapello County, IAIA35,2100.1%–

73Hardin County, IAIA16,4550.1%–

74Shelby County, IAIA11,6890.1%–

75Harrison County, IAIA14,6230.1%–

76Franklin County, IAIA9,8680.1%–

77Calhoun County, IAIA9,5620.1%–

78Grundy County, IAIA12,3610.1%–

79Van Buren County, IAIA7,1310.1%–

80Clinton County, IAIA46,0020.1%–

81Clay County, IAIA16,2020.1%–

82Tama County, IAIA16,7960.1%–

83Webster County, IAIA36,8380.1%–

84Hancock County, IAIA10,5280.1%–

85Lyon County, IAIA12,3540.1%–

86Osceola County, IAIA5,9800.0%–

87Cherokee County, IAIA11,3690.0%–

88Allamakee County, IAIA14,2380.0%–

89Clayton County, IAIA16,8450.0%–

90Ida County, IAIA6,7770.0%–

91Winnebago County, IAIA10,2510.0%–

92Carroll County, IAIA20,3030.0%–

93Palo Alto County, IAIA8,8990.0%–

94O'Brien County, IAIA14,2200.0%–

95Emmet County, IAIA9,1070.0%–

SHOWING 1–95 OF 95

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