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 (2024 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.

Portuguese 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

RANKPLACESTATEPOPPORTUGUESE SHAREVS 2010

01Clay County, IAIA16,2020.5%+0.5 pts

02Palo Alto County, IAIA8,8990.4%+0.3 pts

03Cass County, IAIA12,9600.4%–

04Wayne County, IAIA6,7380.3%–

05Emmet County, IAIA9,1070.3%+0.2 pts

06Dallas County, IAIA118,4570.2%+0.2 pts

07Poweshiek County, IAIA18,3680.2%+0.2 pts

08Chickasaw County, IAIA11,6630.2%−0.0 pts

09Davis County, IAIA9,2300.2%–

10Boone County, IAIA26,7990.1%−0.1 pts

11Pocahontas County, IAIA6,8190.1%+0.0 pts

12Hamilton County, IAIA14,9440.1%–

13Marshall County, IAIA39,8900.1%+0.1 pts

14Butler County, IAIA14,0490.1%+0.0 pts

15Henry County, IAIA19,3490.1%+0.1 pts

16Jones County, IAIA21,2530.1%−0.1 pts

17Pottawattamie County, IAIA92,9960.1%−0.0 pts

18Grundy County, IAIA12,3610.1%–

19Delaware County, IAIA17,6740.1%+0.0 pts

20Muscatine County, IAIA41,8530.1%+0.0 pts

21Jefferson County, IAIA15,2910.1%−0.2 pts

22Warren County, IAIA57,3310.1%+0.1 pts

23Hardin County, IAIA16,4550.1%+0.0 pts

24Lucas County, IAIA8,8470.1%–

25Fremont County, IAIA6,5220.1%–

26Plymouth County, IAIA25,6970.1%–

27Fayette County, IAIA19,0470.1%−0.0 pts

28Marion County, IAIA34,1920.1%−0.2 pts

29Linn County, IAIA232,0280.1%+0.0 pts

30Sac County, IAIA9,5250.1%–

31Mahaska County, IAIA21,8800.0%−0.0 pts

32Winnebago County, IAIA10,2510.0%–

33Johnson County, IAIA160,0440.0%−0.1 pts

34Des Moines County, IAIA38,0770.0%+0.0 pts

35Crawford County, IAIA16,2370.0%–

36Story County, IAIA101,2910.0%−0.1 pts

37Union County, IAIA11,8290.0%–

38Montgomery County, IAIA10,0020.0%–

39Cerro Gordo County, IAIA42,3720.0%−0.2 pts

40Polk County, IAIA516,5460.0%−0.1 pts

41Greene County, IAIA8,6580.0%−0.1 pts

42Cherokee County, IAIA11,3690.0%−0.0 pts

43Jasper County, IAIA38,1530.0%−0.1 pts

44Allamakee County, IAIA14,2380.0%−0.0 pts

45Van Buren County, IAIA7,1310.0%–

46Carroll County, IAIA20,3030.0%+0.0 pts

47Floyd County, IAIA14,9010.0%−0.1 pts

48Black Hawk County, IAIA131,5320.0%−0.0 pts

49Dubuque County, IAIA99,3810.0%−0.0 pts

50Woodbury County, IAIA106,6490.0%−0.0 pts

51Clayton County, IAIA16,8450.0%+0.0 pts

52Monona County, IAIA8,5390.0%−0.0 pts

53Scott County, IAIA175,2590.0%−0.0 pts

54Calhoun County, IAIA9,5620.0%+0.0 pts

55Keokuk County, IAIA9,7970.0%–

56Buena Vista County, IAIA20,4490.0%−0.1 pts

57Mitchell County, IAIA10,6500.0%–

58Buchanan County, IAIA20,8830.0%−0.1 pts

59Sioux County, IAIA36,7740.0%−0.1 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES