RANKING · 2024 ACS · 28 SHOWN OF 28

Highest Brazilian population share, Iowa counties

Iowa counties ranked by the share of all residents who are Brazilian ancestry (2024 American Community Survey). A concentration measure: Brazilian residents as a percentage of total population. This list covers the 28 counties in Iowa that qualify, ranked against each other statewide.

Brazilian Americans: full group profile →

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Brazilian population share by state

RANKPLACESTATEPOPBRAZILIAN SHAREVS 2010

01Story County, IAIA101,2910.3%+1627%

02Jefferson County, IAIA15,2910.3%–

03Cherokee County, IAIA11,3690.2%+18%

04Page County, IAIA14,8560.2%–

05Sac County, IAIA9,5250.2%–

06Poweshiek County, IAIA18,3680.1%+40%

07Audubon County, IAIA5,5090.1%–

08Dallas County, IAIA118,4570.1%–

09Washington County, IAIA22,6670.1%+92%

10Johnson County, IAIA160,0440.1%+99%

11Emmet County, IAIA9,1070.1%–

12Grundy County, IAIA12,3610.0%–

13Black Hawk County, IAIA131,5320.0%+142%

14Lyon County, IAIA12,3540.0%–

15Scott County, IAIA175,2590.0%−58%

16Marion County, IAIA34,1920.0%–

17Dubuque County, IAIA99,3810.0%–

18Wapello County, IAIA35,2100.0%−46%

19Linn County, IAIA232,0280.0%+571%

20Iowa County, IAIA16,5040.0%–

21Pottawattamie County, IAIA92,9960.0%–

22Polk County, IAIA516,5460.0%+156%

23Chickasaw County, IAIA11,6630.0%–

24O'Brien County, IAIA14,2200.0%–

25Clinton County, IAIA46,0020.0%−67%

26Delaware County, IAIA17,6740.0%–

27Henry County, IAIA19,3490.0%–

28Webster County, IAIA36,8380.0%–

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UPDATED 2026-07-05 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES