RANKING · 2010 CENSUS · 43 SHOWN OF 43

Largest South American population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are South American origin, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 43 counties in Iowa that qualify, ranked against each other statewide. The median across all 43 is 27.

South Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSOUTH AMERICAN POPULATIONVS –

01Polk County, IAIA516,546806–

02Johnson County, IAIA160,044540–

03Dallas County, IAIA118,457320–

04Scott County, IAIA175,259258–

05Black Hawk County, IAIA131,532219–

06Linn County, IAIA232,028218–

07Story County, IAIA101,291213–

08Dubuque County, IAIA99,381108–

09Muscatine County, IAIA41,85391–

10Buena Vista County, IAIA20,44980–

11Clinton County, IAIA46,00278–

12Plymouth County, IAIA25,69773–

13Woodbury County, IAIA106,64971–

14Henry County, IAIA19,34947–

15Crawford County, IAIA16,23741–

16Floyd County, IAIA14,90141–

17Jefferson County, IAIA15,29139–

18Hardin County, IAIA16,45538–

19Pottawattamie County, IAIA92,99631–

20Wapello County, IAIA35,21030–

21Winnebago County, IAIA10,25130–

22Des Moines County, IAIA38,07727–

23Sioux County, IAIA36,77427–

24Bremer County, IAIA25,29624–

25Cerro Gordo County, IAIA42,37223–

26Decatur County, IAIA7,65523–

27Mills County, IAIA14,79318–

28Page County, IAIA14,85618–

29Hamilton County, IAIA14,94416–

30Warren County, IAIA57,33116–

31Jasper County, IAIA38,15314–

32Madison County, IAIA17,27012–

33Poweshiek County, IAIA18,36812–

34O'Brien County, IAIA14,22010–

35Boone County, IAIA26,7999–

36Dickinson County, IAIA18,0779–

37Humboldt County, IAIA9,4098–

38Winneshiek County, IAIA19,7338–

39Marshall County, IAIA39,8907–

40Worth County, IAIA7,3387–

41Jones County, IAIA21,2536–

42Wright County, IAIA12,8016–

43Marion County, IAIA34,1922–

SHOWING 1–43 OF 43

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS