RANKING · 2020 CENSUS · 62 SHOWN OF 62

Largest Portuguese population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Portuguese ancestry, 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 62 counties in Iowa that qualify, ranked against each other statewide.

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 POPULATIONVS 2010

01Dallas County, IAIA118,457403+1393%

02Polk County, IAIA516,546297−22%

03Johnson County, IAIA160,044245+93%

04Linn County, IAIA232,028106+22%

05Black Hawk County, IAIA131,53296+200%

06Woodbury County, IAIA106,64986+65%

07Pottawattamie County, IAIA92,99684−24%

08Story County, IAIA101,29170−57%

09Scott County, IAIA175,25969+25%

10Palo Alto County, IAIA8,89951+467%

11Cherokee County, IAIA11,36940+300%

12Cerro Gordo County, IAIA42,37235−62%

13Sioux County, IAIA36,77427+8%

14Floyd County, IAIA14,90124+26%

15Lee County, IAIA32,30624–

16Marshall County, IAIA39,89021+31%

17Union County, IAIA11,82921–

18Webster County, IAIA36,83821–

19Des Moines County, IAIA38,07718+157%

20Wayne County, IAIA6,73818–

21Warren County, IAIA57,33117+21%

22Bremer County, IAIA25,29617−6%

23Davis County, IAIA9,23016–

24Hamilton County, IAIA14,94416–

25Buchanan County, IAIA20,88314−42%

26Boone County, IAIA26,79913−75%

27Dubuque County, IAIA99,38113−32%

28Fayette County, IAIA19,04713−28%

29Taylor County, IAIA5,83513–

30Cedar County, IAIA18,35912−81%

31Clinton County, IAIA46,00212+9%

32Lyon County, IAIA12,35412–

33Chickasaw County, IAIA11,66311−61%

34Mahaska County, IAIA21,88010−44%

35Mitchell County, IAIA10,65010–

36Pocahontas County, IAIA6,8199+13%

37Poweshiek County, IAIA18,3689−10%

38Muscatine County, IAIA41,8538−73%

39Appanoose County, IAIA12,0778−76%

40Wapello County, IAIA35,2108−88%

41Winnebago County, IAIA10,2518–

42Keokuk County, IAIA9,7977–

43Plymouth County, IAIA25,6977–

44Iowa County, IAIA16,5046−40%

45Buena Vista County, IAIA20,4496−73%

46Jasper County, IAIA38,1536−83%

47Tama County, IAIA16,7965–

48Carroll County, IAIA20,3035+25%

49Worth County, IAIA7,3385–

50Allamakee County, IAIA14,2384−56%

51Grundy County, IAIA12,3614–

52Crawford County, IAIA16,2373–

53Guthrie County, IAIA10,7823−63%

54Sac County, IAIA9,5253–

55Butler County, IAIA14,0492−83%

56Wright County, IAIA12,8012−91%

57Benton County, IAIA26,0042−86%

58Clayton County, IAIA16,8452+0%

59Louisa County, IAIA10,4162–

60Dickinson County, IAIA18,0771−97%

61Humboldt County, IAIA9,4091−50%

62Monona County, IAIA8,5391−67%

SHOWING 1–62 OF 62

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS