RANKING · 2010 CENSUS · 61 SHOWN OF 61

Highest Portuguese population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Portuguese ancestry (2010 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 61 counties in Iowa that qualify, ranked against each other statewide. The median across all 61 is 0.1%.

Portuguese Americans: full group profile →

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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

RANKPLACESTATEPOPPORTUGUESE SHAREVS –

01Cedar County, IAIA18,3590.3%–

02Hancock County, IAIA10,5280.3%–

03Mills County, IAIA14,7930.3%–

04Appanoose County, IAIA12,0770.3%–

05Jefferson County, IAIA15,2910.2%–

06Marion County, IAIA34,1920.2%–

07Chickasaw County, IAIA11,6630.2%–

08Cerro Gordo County, IAIA42,3720.2%–

09Wapello County, IAIA35,2100.2%–

10Boone County, IAIA26,7990.2%–

11Story County, IAIA101,2910.2%–

12Dickinson County, IAIA18,0770.2%–

13Wright County, IAIA12,8010.2%–

14Jones County, IAIA21,2530.2%–

15Greene County, IAIA8,6580.1%–

16Pottawattamie County, IAIA92,9960.1%–

17Floyd County, IAIA14,9010.1%–

18Buchanan County, IAIA20,8830.1%–

19Buena Vista County, IAIA20,4490.1%–

20Pocahontas County, IAIA6,8190.1%–

21Johnson County, IAIA160,0440.1%–

22Palo Alto County, IAIA8,8990.1%–

23Jasper County, IAIA38,1530.1%–

24Polk County, IAIA516,5460.1%–

25Harrison County, IAIA14,6230.1%–

26Fayette County, IAIA19,0470.1%–

27Ida County, IAIA6,7770.1%–

28Cherokee County, IAIA11,3690.1%–

29Butler County, IAIA14,0490.1%–

30Mahaska County, IAIA21,8800.1%–

31Emmet County, IAIA9,1070.1%–

32Sioux County, IAIA36,7740.1%–

33Bremer County, IAIA25,2960.1%–

34Guthrie County, IAIA10,7820.1%–

35Clay County, IAIA16,2020.1%–

36Muscatine County, IAIA41,8530.1%–

37Delaware County, IAIA17,6740.1%–

38Allamakee County, IAIA14,2380.1%–

39Iowa County, IAIA16,5040.1%–

40Benton County, IAIA26,0040.1%–

41Poweshiek County, IAIA18,3680.1%–

42Woodbury County, IAIA106,6490.1%–

43Dallas County, IAIA118,4570.0%–

44Page County, IAIA14,8560.0%–

45Linn County, IAIA232,0280.0%–

46Shelby County, IAIA11,6890.0%–

47Marshall County, IAIA39,8900.0%–

48Hardin County, IAIA16,4550.0%–

49Scott County, IAIA175,2590.0%–

50Monona County, IAIA8,5390.0%–

51Kossuth County, IAIA14,3220.0%–

52Warren County, IAIA57,3310.0%–

53Black Hawk County, IAIA131,5320.0%–

54Clinton County, IAIA46,0020.0%–

55Dubuque County, IAIA99,3810.0%–

56Humboldt County, IAIA9,4090.0%–

57Carroll County, IAIA20,3030.0%–

58Des Moines County, IAIA38,0770.0%–

59Clayton County, IAIA16,8450.0%–

60Calhoun County, IAIA9,5620.0%–

61Henry County, IAIA19,3490.0%–

SHOWING 1–61 OF 61

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