RANKING · 2024 ACS · 28 SHOWN OF 28

Largest Brazilian population, Iowa counties

Iowa counties ranked by the number of residents who are Brazilian 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 28 counties in Iowa that qualify, ranked against each other statewide. The median across all 28 is 18. Biggest climber in the top 100 since 2020: Scott County, IA, up 13 places to #6.

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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

RANKPLACESTATEPOPBRAZILIAN POPULATIONVS 2010

01Story County, IAIA101,291317+1881%

02▲2Johnson County, IAIA160,044150+146%

03▼1Dallas County, IAIA118,457134–

04▼1Polk County, IAIA516,54686+207%

05Black Hawk County, IAIA131,53259+146%

06▲13Scott County, IAIA175,25955−55%

07▼2Linn County, IAIA232,02852+643%

08▲6Jefferson County, IAIA15,29141–

09▼2Page County, IAIA14,85630–

10▲3Poweshiek County, IAIA18,36826+37%

11Cherokee County, IAIA11,36926+13%

12Dubuque County, IAIA99,38124–

13Washington County, IAIA22,66724+100%

14Sac County, IAIA9,52518–

15▼6Pottawattamie County, IAIA92,99616–

16Marion County, IAIA34,19210–

17Emmet County, IAIA9,1078–

18▼7Wapello County, IAIA35,2108−47%

19Audubon County, IAIA5,5097–

20Grundy County, IAIA12,3616–

21▼4Clinton County, IAIA46,0024−69%

22Lyon County, IAIA12,3544–

23Iowa County, IAIA16,5043–

24Chickasaw County, IAIA11,6632–

25O'Brien County, IAIA14,2202–

26Delaware County, IAIA17,6741–

27▼5Henry County, IAIA19,3491–

28Webster County, IAIA36,8381–

SHOWING 1–28 OF 28

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES