RANKING · 2020 CENSUS · 37 SHOWN OF 37

Highest Vietnamese population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Vietnamese (2020 American Community Survey). A concentration measure: Vietnamese residents as a percentage of total population. This list covers the 37 counties in Iowa that qualify, ranked against each other statewide.

Vietnamese Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Chinese population Highest Chinese population share Largest Taiwanese population Highest Taiwanese population share Largest Hmong population Highest Hmong population share

RANKPLACESTATEPOPVIETNAMESE SHAREVS –

01Woodbury County, IAIA106,6491.1%–

02Polk County, IAIA516,5460.9%–

03Henry County, IAIA19,3490.8%–

04Scott County, IAIA175,2590.7%–

05Story County, IAIA101,2910.7%–

06Johnson County, IAIA160,0440.7%–

07Jefferson County, IAIA15,2910.6%–

08Buena Vista County, IAIA20,4490.6%–

09Dallas County, IAIA118,4570.5%–

10Marshall County, IAIA39,8900.4%–

11Plymouth County, IAIA25,6970.3%–

12Cerro Gordo County, IAIA42,3720.3%–

13Adams County, IAIA3,6170.2%–

14Pottawattamie County, IAIA92,9960.2%–

15Linn County, IAIA232,0280.2%–

16Winnebago County, IAIA10,2510.2%–

17Cedar County, IAIA18,3590.2%–

18Warren County, IAIA57,3310.2%–

19Cherokee County, IAIA11,3690.2%–

20Worth County, IAIA7,3380.1%–

21Mills County, IAIA14,7930.1%–

22Boone County, IAIA26,7990.1%–

23Lee County, IAIA32,3060.1%–

24Dubuque County, IAIA99,3810.1%–

25Decatur County, IAIA7,6550.1%–

26Sac County, IAIA9,5250.1%–

27Benton County, IAIA26,0040.1%–

28Jasper County, IAIA38,1530.1%–

29Black Hawk County, IAIA131,5320.1%–

30Poweshiek County, IAIA18,3680.0%–

31Jones County, IAIA21,2530.0%–

32Appanoose County, IAIA12,0770.0%–

33Webster County, IAIA36,8380.0%–

34Kossuth County, IAIA14,3220.0%–

35Clinton County, IAIA46,0020.0%–

36Louisa County, IAIA10,4160.0%–

37Hardin County, IAIA16,4550.0%–

SHOWING 1–37 OF 37

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS