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 (2024 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. The median across all 29 is 0.1%. Biggest climber in the top 100 since 2020: Woodbury County, IA, up 5 places to #10.

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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 2010

01Marshall County, IAIA39,8900.6%–

02Winneshiek County, IAIA19,7330.5%–

03Clinton County, IAIA46,0020.3%+0.3 pts

04Wayne County, IAIA6,7380.3%–

05Floyd County, IAIA14,9010.2%+0.1 pts

06Des Moines County, IAIA38,0770.2%–

07Scott County, IAIA175,2590.1%+0.1 pts

08▼1Webster County, IAIA36,8380.1%–

09Clayton County, IAIA16,8450.1%–

10▲5Woodbury County, IAIA106,6490.1%+0.1 pts

11Wapello County, IAIA35,2100.1%0.0 pts

12▼4Black 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%0.0 pts

17▼5Linn County, IAIA232,0280.1%–

18▼15Marion County, IAIA34,1920.1%–

19▼9Johnson County, IAIA160,0440.0%0.0 pts

20▼9Polk County, IAIA516,5460.0%0.0 pts

21Bremer County, IAIA25,2960.0%–

22▼6Story County, IAIA101,2910.0%0.0 pts

23Calhoun County, IAIA9,5620.0%–

24Pottawattamie County, IAIA92,9960.0%–

25Dallas County, IAIA118,4570.0%0.0 pts

26Warren County, IAIA57,3310.0%–

27▼10Cedar County, IAIA18,3590.0%–

28Poweshiek County, IAIA18,3680.0%–

29▼11Dubuque County, IAIA99,3810.0%0.0 pts

SHOWING 1–29 OF 29

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