RANKING · 2020 CENSUS · 22 SHOWN OF 22

Highest Brazilian population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Brazilian ancestry (2020 American Community Survey). A concentration measure: Brazilian residents as a percentage of total population. This list covers the 22 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, IAIA101,2910.4%+1885%

02Floyd County, IAIA14,9010.2%–

03Ida County, IAIA6,7770.2%–

04Dallas County, IAIA118,4570.2%–

05Page County, IAIA14,8560.2%–

06Jefferson County, IAIA15,2910.1%–

07Poweshiek County, IAIA18,3680.1%−35%

08Johnson County, IAIA160,0440.1%+33%

09Hardin County, IAIA16,4550.1%–

10Muscatine County, IAIA41,8530.1%−69%

11Osceola County, IAIA5,9800.0%–

12Sioux County, IAIA36,7740.0%–

13Wapello County, IAIA35,2100.0%+1%

14Clay County, IAIA16,2020.0%–

15Polk County, IAIA516,5460.0%+323%

16Marion County, IAIA34,1920.0%–

17Pottawattamie County, IAIA92,9960.0%–

18Mitchell County, IAIA10,6500.0%–

19Linn County, IAIA232,0280.0%+453%

20Clinton County, IAIA46,0020.0%−43%

21Henry County, IAIA19,3490.0%–

22Scott County, IAIA175,2590.0%−96%

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UPDATED 2026-07-05 · DATA: US CENSUS BUREAU DECENNIAL CENSUS