RANKING · 2020 CENSUS · 37 SHOWN OF 37

Largest Vietnamese population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Vietnamese, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 37 counties in Iowa that qualify, ranked against each other statewide.

Vietnamese Americans: full group profile →

IowaAll states All rankings

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 POPULATIONVS –

01Polk County, IAIA516,5464,267–

02Scott County, IAIA175,2591,250–

03Woodbury County, IAIA106,6491,178–

04Johnson County, IAIA160,044997–

05Story County, IAIA101,291645–

06Linn County, IAIA232,028522–

07Dallas County, IAIA118,457418–

08Pottawattamie County, IAIA92,996217–

09Marshall County, IAIA39,890178–

10Henry County, IAIA19,349159–

11Cerro Gordo County, IAIA42,372122–

12Buena Vista County, IAIA20,449110–

13Jefferson County, IAIA15,291107–

14Warren County, IAIA57,331104–

15Dubuque County, IAIA99,38191–

16Plymouth County, IAIA25,69773–

17Black Hawk County, IAIA131,53272–

18Cedar County, IAIA18,35940–

19Lee County, IAIA32,30632–

20Boone County, IAIA26,79925–

21Winnebago County, IAIA10,25124–

22Jasper County, IAIA38,15321–

23Cherokee County, IAIA11,36919–

24Mills County, IAIA14,79315–

25Benton County, IAIA26,00415–

26Clinton County, IAIA46,00212–

27Webster County, IAIA36,83810–

28Worth County, IAIA7,33810–

29Adams County, IAIA3,6179–

30Poweshiek County, IAIA18,3689–

31Jones County, IAIA21,2537–

32Decatur County, IAIA7,6556–

33Sac County, IAIA9,5256–

34Appanoose County, IAIA12,0774–

35Kossuth County, IAIA14,3224–

36Louisa County, IAIA10,4162–

37Hardin County, IAIA16,4551–

SHOWING 1–37 OF 37

Download CSV (full list, 37 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS