RANKING · 2024 ACS · 29 SHOWN OF 29

Highest Dominican population share, Iowa counties

Iowa counties ranked by the share of all residents who are Dominican origin (2023 American Community Survey). A concentration measure: Dominican residents as a percentage of total population. This list covers the 29 counties in Iowa that qualify, ranked against each other statewide.

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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 SHAREVS 2000

01Marshall County, IAIA39,8900.6%–

02Winneshiek County, IAIA19,7330.5%–

03Clinton County, IAIA46,0020.3%–

04Wayne County, IAIA6,7380.3%–

05Floyd County, IAIA14,9010.2%–

06Des Moines County, IAIA38,0770.2%–

07Scott County, IAIA175,2590.1%–

08Webster County, IAIA36,8380.1%–

09Clayton County, IAIA16,8450.1%–

10Woodbury County, IAIA106,6490.1%–

11Wapello County, IAIA35,2100.1%–

12Black Hawk County, IAIA131,5320.1%–

13Jefferson County, IAIA15,2910.1%–

14Decatur County, IAIA7,6550.1%–

15Boone County, IAIA26,7990.1%–

16Buena Vista County, IAIA20,4490.1%–

17Linn County, IAIA232,0280.1%–

18Marion County, IAIA34,1920.1%–

19Johnson County, IAIA160,0440.0%–

20Polk County, IAIA516,5460.0%–

21Bremer County, IAIA25,2960.0%–

22Story County, IAIA101,2910.0%–

23Calhoun County, IAIA9,5620.0%–

24Pottawattamie County, IAIA92,9960.0%–

25Dallas County, IAIA118,4570.0%–

26Warren County, IAIA57,3310.0%–

27Cedar County, IAIA18,3590.0%–

28Poweshiek County, IAIA18,3680.0%–

29Dubuque County, IAIA99,3810.0%–

SHOWING 1–29 OF 29

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES