RANKING · 2020 CENSUS · 78 SHOWN OF 78

Largest Puerto Rican population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Puerto Rican origin, 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 78 counties in Iowa that qualify, ranked against each other statewide. The median across all 78 is 28.

Puerto Rican Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Highest Puerto Rican population share Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN POPULATIONVS 2010

01Polk County, IAIA516,5462,055+345%

02Johnson County, IAIA160,044662+16%

03Des Moines County, IAIA38,077448+874%

04Muscatine County, IAIA41,853418+60%

05Black Hawk County, IAIA131,532386+82%

06Scott County, IAIA175,259386+64%

07Dallas County, IAIA118,457355–

08Woodbury County, IAIA106,649346+28%

09Linn County, IAIA232,028298−8%

10Story County, IAIA101,291282+5%

11Marshall County, IAIA39,890244+146%

12Jefferson County, IAIA15,291206–

13Pottawattamie County, IAIA92,996205+247%

14Cerro Gordo County, IAIA42,372193−22%

15Clinton County, IAIA46,002167+1185%

16O'Brien County, IAIA14,220150–

17Winnebago County, IAIA10,251132–

18Dubuque County, IAIA99,381122−23%

19Webster County, IAIA36,838118+146%

20Wapello County, IAIA35,21092+268%

21Fayette County, IAIA19,04791–

22Henry County, IAIA19,34990+463%

23Wright County, IAIA12,80184+180%

24Greene County, IAIA8,65883–

25Jasper County, IAIA38,15383+207%

26Hardin County, IAIA16,45578+63%

27Kossuth County, IAIA14,32253+1225%

28Poweshiek County, IAIA18,36852–

29Bremer County, IAIA25,29645+309%

30Union County, IAIA11,82944+144%

31Mitchell County, IAIA10,65043–

32Carroll County, IAIA20,30340+567%

33Allamakee County, IAIA14,23835+67%

34Floyd County, IAIA14,90133–

35Adair County, IAIA7,40332–

36Sioux County, IAIA36,77432–

37Boone County, IAIA26,79931–

38Warren County, IAIA57,33131+63%

39Emmet County, IAIA9,10728–

40Winneshiek County, IAIA19,73327−13%

41Wayne County, IAIA6,73826–

42Mahaska County, IAIA21,88025+79%

43Monroe County, IAIA7,40625–

44Hancock County, IAIA10,52824–

45Jackson County, IAIA19,28823−45%

46Dickinson County, IAIA18,07722+5%

47Clay County, IAIA16,20220−35%

48Fremont County, IAIA6,52219+280%

49Clarke County, IAIA9,57418–

50Tama County, IAIA16,79618+13%

51Decatur County, IAIA7,65516+700%

52Chickasaw County, IAIA11,66314+17%

53Grundy County, IAIA12,36113−74%

54Iowa County, IAIA16,50413−13%

55Butler County, IAIA14,04910–

56Keokuk County, IAIA9,79710–

57Madison County, IAIA17,27010–

58Buena Vista County, IAIA20,4499−92%

59Louisa County, IAIA10,4169−64%

60Crawford County, IAIA16,2378−93%

61Shelby County, IAIA11,6898–

62Lee County, IAIA32,3067−77%

63Ida County, IAIA6,7776−60%

64Audubon County, IAIA5,5095–

65Buchanan County, IAIA20,8835−76%

66Clayton County, IAIA16,8455−85%

67Howard County, IAIA9,4155–

68Worth County, IAIA7,3385+67%

69Marion County, IAIA34,1925−98%

70Washington County, IAIA22,6675−72%

71Plymouth County, IAIA25,6974−86%

72Benton County, IAIA26,0043+200%

73Cedar County, IAIA18,3592−67%

74Humboldt County, IAIA9,4092–

75Jones County, IAIA21,2532−89%

76Cherokee County, IAIA11,3691–

77Guthrie County, IAIA10,7821–

78Sac County, IAIA9,5251–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS