RANKING · 2020 CENSUS · 21 SHOWN OF 21

Highest Korean population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Korean (2023 American Community Survey). A concentration measure: Korean residents as a percentage of total population. 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 SHAREVS 2000

01Buena Vista County, IAIA20,4493.4%–

02Louisa County, IAIA10,4163.1%–

03Marshall County, IAIA39,8902.2%–

04Crawford County, IAIA16,2371.6%–

05Polk County, IAIA516,5460.6%–

06Black Hawk County, IAIA131,5320.6%–

07Carroll County, IAIA20,3030.1%–

08Jefferson County, IAIA15,2910.1%–

09Clayton County, IAIA16,8450.1%–

10Decatur County, IAIA7,6550.1%–

11Marion County, IAIA34,1920.1%–

12Winneshiek County, IAIA19,7330.0%–

13Wapello County, IAIA35,2100.0%–

14Iowa County, IAIA16,5040.0%–

15Woodbury County, IAIA106,6490.0%–

16O'Brien County, IAIA14,2200.0%–

17Scott County, IAIA175,2590.0%–

18Linn County, IAIA232,0280.0%–

19Jasper County, IAIA38,1530.0%–

20Muscatine County, IAIA41,8530.0%–

21Boone County, IAIA26,7990.0%–

SHOWING 1–21 OF 21

Download CSV (full list, 21 rows)

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