RANKING · 2020 CENSUS · 31 SHOWN OF 31

Largest Jamaican population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Jamaican ancestry, 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 31 counties in Iowa that qualify, ranked against each other statewide.

Jamaican Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPJAMAICAN POPULATIONVS 2010

01Linn County, IAIA232,028278+1886%

02Polk County, IAIA516,546257−5%

03Johnson County, IAIA160,04494−15%

04Shelby County, IAIA11,68972–

05Woodbury County, IAIA106,64958+544%

06Black Hawk County, IAIA131,53254−38%

07Dubuque County, IAIA99,38152+478%

08Mahaska County, IAIA21,88051–

09Webster County, IAIA36,83846+667%

10Boone County, IAIA26,79935−27%

11Henry County, IAIA19,34932–

12Scott County, IAIA175,25931+158%

13Story County, IAIA101,29124–

14Decatur County, IAIA7,65521+91%

15Emmet County, IAIA9,10721+950%

16Palo Alto County, IAIA8,89921–

17Jasper County, IAIA38,15320+1900%

18Union County, IAIA11,82915–

19Sac County, IAIA9,5256–

20Wapello County, IAIA35,2106–

21Jackson County, IAIA19,2885–

22Sioux County, IAIA36,7745–

23Crawford County, IAIA16,2374–

24Fayette County, IAIA19,0473–

25Page County, IAIA14,8563–

26Montgomery County, IAIA10,0023–

27Mills County, IAIA14,7932–

28Dallas County, IAIA118,4572−98%

29O'Brien County, IAIA14,2202–

30Dickinson County, IAIA18,0771–

31Clayton County, IAIA16,8451–

SHOWING 1–31 OF 31

Download CSV (full list, 31 rows)

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