RANKING · 2024 ACS · 29 SHOWN OF 29

Largest Dominican population, Iowa counties

Iowa counties ranked by the number of residents who are Dominican origin, 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 29 counties in Iowa that qualify, ranked against each other statewide.

Dominican Americans: full group profile →

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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

RANKPLACESTATEPOPDOMINICAN POPULATIONVS 2010

01Marshall County, IAIA39,890241–

02Scott County, IAIA175,259227+2422%

03Polk County, IAIA516,546181+212%

04Linn County, IAIA232,028142–

05Clinton County, IAIA46,002129+12800%

06Black Hawk County, IAIA131,532111–

07Woodbury County, IAIA106,649100+567%

08Winneshiek County, IAIA19,73391–

09Des Moines County, IAIA38,07771–

10Johnson County, IAIA160,04470+289%

11Webster County, IAIA36,83844–

12Floyd County, IAIA14,90137+68%

13Wapello County, IAIA35,21030+43%

14Story County, IAIA101,29129+4%

15Boone County, IAIA26,79919–

16Marion County, IAIA34,19219–

17Pottawattamie County, IAIA92,99618–

18Wayne County, IAIA6,73818–

19Clayton County, IAIA16,84517–

20Buena Vista County, IAIA20,44913+0%

21Jefferson County, IAIA15,29113–

22Dallas County, IAIA118,45712+9%

23Bremer County, IAIA25,2968–

24Decatur County, IAIA7,6556–

25Dubuque County, IAIA99,3815−77%

26Warren County, IAIA57,3314–

27Calhoun County, IAIA9,5622–

28Poweshiek County, IAIA18,3681–

29Cedar County, IAIA18,3591–

SHOWING 1–29 OF 29

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES