RANKING · 2020 CENSUS · 21 SHOWN OF 21

Largest Korean population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Korean, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 21 counties in Iowa that qualify, ranked against each other statewide.

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

RANKPLACESTATEPOPKOREAN POPULATIONVS 2000

01Polk County, IAIA516,5463,121–

02Marshall County, IAIA39,890878–

03Black Hawk County, IAIA131,532841–

04Buena Vista County, IAIA20,449684–

05Louisa County, IAIA10,416340–

06Crawford County, IAIA16,237266–

07Linn County, IAIA232,02824–

08Carroll County, IAIA20,30324–

09Scott County, IAIA175,25924–

10Marion County, IAIA34,19219–

11Woodbury County, IAIA106,64917–

12Wapello County, IAIA35,21016–

13Jefferson County, IAIA15,29115–

14Clayton County, IAIA16,84514–

15Winneshiek County, IAIA19,73310–

16Iowa County, IAIA16,5047–

17Decatur County, IAIA7,6556–

18Muscatine County, IAIA41,8532–

19Jasper County, IAIA38,1532–

20O'Brien County, IAIA14,2202–

21Boone County, IAIA26,7991–

SHOWING 1–21 OF 21

Download CSV (full list, 21 rows)

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