RANKING · 2024 ACS · 59 SHOWN OF 59

Highest Portuguese population share, Iowa counties

Iowa counties ranked by the share of all residents who are Portuguese ancestry (2023 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 59 counties in Iowa that qualify, ranked against each other statewide.

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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 2000

01Clay County, IAIA16,2020.5%–

02Palo Alto County, IAIA8,8990.4%–

03Cass County, IAIA12,9600.4%–

04Wayne County, IAIA6,7380.3%–

05Emmet County, IAIA9,1070.3%–

06Dallas County, IAIA118,4570.2%–

07Poweshiek County, IAIA18,3680.2%–

08Chickasaw County, IAIA11,6630.2%–

09Davis County, IAIA9,2300.2%–

10Boone County, IAIA26,7990.1%–

11Pocahontas County, IAIA6,8190.1%–

12Hamilton County, IAIA14,9440.1%–

13Marshall County, IAIA39,8900.1%–

14Butler County, IAIA14,0490.1%–

15Henry County, IAIA19,3490.1%–

16Jones County, IAIA21,2530.1%–

17Pottawattamie County, IAIA92,9960.1%–

18Grundy County, IAIA12,3610.1%–

19Delaware County, IAIA17,6740.1%–

20Muscatine County, IAIA41,8530.1%–

21Jefferson County, IAIA15,2910.1%–

22Warren County, IAIA57,3310.1%–

23Hardin County, IAIA16,4550.1%–

24Lucas County, IAIA8,8470.1%–

25Fremont County, IAIA6,5220.1%–

26Plymouth County, IAIA25,6970.1%–

27Fayette County, IAIA19,0470.1%–

28Marion County, IAIA34,1920.1%–

29Linn County, IAIA232,0280.1%–

30Sac County, IAIA9,5250.1%–

31Mahaska County, IAIA21,8800.0%–

32Winnebago County, IAIA10,2510.0%–

33Johnson County, IAIA160,0440.0%–

34Des Moines County, IAIA38,0770.0%–

35Crawford County, IAIA16,2370.0%–

36Story County, IAIA101,2910.0%–

37Union County, IAIA11,8290.0%–

38Montgomery County, IAIA10,0020.0%–

39Cerro Gordo County, IAIA42,3720.0%–

40Polk County, IAIA516,5460.0%–

41Greene County, IAIA8,6580.0%–

42Cherokee County, IAIA11,3690.0%–

43Jasper County, IAIA38,1530.0%–

44Allamakee County, IAIA14,2380.0%–

45Van Buren County, IAIA7,1310.0%–

46Carroll County, IAIA20,3030.0%–

47Floyd County, IAIA14,9010.0%–

48Black Hawk County, IAIA131,5320.0%–

49Dubuque County, IAIA99,3810.0%–

50Woodbury County, IAIA106,6490.0%–

51Clayton County, IAIA16,8450.0%–

52Monona County, IAIA8,5390.0%–

53Scott County, IAIA175,2590.0%–

54Calhoun County, IAIA9,5620.0%–

55Keokuk County, IAIA9,7970.0%–

56Buena Vista County, IAIA20,4490.0%–

57Mitchell County, IAIA10,6500.0%–

58Buchanan County, IAIA20,8830.0%–

59Sioux County, IAIA36,7740.0%–

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