RANKING · 2024 ACS · 59 SHOWN OF 59

Largest Portuguese population, Iowa counties

Iowa counties ranked by the number of residents who are Portuguese ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 59 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, IAIA118,457234+767%

02Polk County, IAIA516,546176−54%

03Linn County, IAIA232,028127+46%

04Clay County, IAIA16,20290+650%

05Pottawattamie County, IAIA92,99684−24%

06Johnson County, IAIA160,04474−42%

07Marshall County, IAIA39,89051+219%

08Cass County, IAIA12,96050–

09Warren County, IAIA57,33145+221%

10Story County, IAIA101,29143−74%

11Poweshiek County, IAIA18,36839+290%

12Muscatine County, IAIA41,85336+20%

13Palo Alto County, IAIA8,89936+300%

14Boone County, IAIA26,79935−31%

15Emmet County, IAIA9,10724+200%

16Black Hawk County, IAIA131,53223−28%

17Chickasaw County, IAIA11,66323−18%

18Henry County, IAIA19,34923+1050%

19Scott County, IAIA175,25920−64%

20Wayne County, IAIA6,73820–

21Hamilton County, IAIA14,94419–

22Jones County, IAIA21,25319−44%

23Marion County, IAIA34,19219−75%

24Butler County, IAIA14,04918+50%

25Des Moines County, IAIA38,07717+143%

26Dubuque County, IAIA99,38116−16%

27Cerro Gordo County, IAIA42,37215−84%

28Davis County, IAIA9,23015–

29Delaware County, IAIA17,67415+25%

30Plymouth County, IAIA25,69715–

31Jefferson County, IAIA15,29113−68%

32Woodbury County, IAIA106,64913−75%

33Hardin County, IAIA16,45512+71%

34Fayette County, IAIA19,04711−39%

35Grundy County, IAIA12,36111–

36Jasper County, IAIA38,15311−69%

37Mahaska County, IAIA21,88011−39%

38Pocahontas County, IAIA6,8199+13%

39Crawford County, IAIA16,2377–

40Lucas County, IAIA8,8476–

41Union County, IAIA11,8295–

42Carroll County, IAIA20,3035+25%

43Sac County, IAIA9,5255–

44Winnebago County, IAIA10,2515–

45Allamakee County, IAIA14,2384−56%

46Cherokee County, IAIA11,3694−60%

47Fremont County, IAIA6,5224–

48Montgomery County, IAIA10,0024–

49Greene County, IAIA8,6583−77%

50Floyd County, IAIA14,9013−84%

51Buena Vista County, IAIA20,4492−91%

52Clayton County, IAIA16,8452+0%

53Van Buren County, IAIA7,1312–

54Mitchell County, IAIA10,6501–

55Buchanan County, IAIA20,8831−96%

56Calhoun County, IAIA9,5621+0%

57Keokuk County, IAIA9,7971–

58Monona County, IAIA8,5391−67%

59Sioux County, IAIA36,7741−96%

SHOWING 1–59 OF 59

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES