RANKING · 2020 CENSUS · 78 SHOWN OF 78

Highest Puerto Rican population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Puerto Rican origin (2023 American Community Survey). A concentration measure: Puerto Rican residents as a percentage of total population. This list covers the 78 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN SHAREVS 2000

01Winnebago County, IAIA10,2511.3%–

02Des Moines County, IAIA38,0771.1%–

03Jefferson County, IAIA15,2911.1%–

04O'Brien County, IAIA14,2201.1%–

05Muscatine County, IAIA41,8531.0%–

06Greene County, IAIA8,6580.9%–

07Wright County, IAIA12,8010.7%–

08Marshall County, IAIA39,8900.6%–

09Fayette County, IAIA19,0470.5%–

10Hardin County, IAIA16,4550.5%–

11Adair County, IAIA7,4030.5%–

12Henry County, IAIA19,3490.5%–

13Cerro Gordo County, IAIA42,3720.5%–

14Johnson County, IAIA160,0440.4%–

15Polk County, IAIA516,5460.4%–

16Mitchell County, IAIA10,6500.4%–

17Wayne County, IAIA6,7380.4%–

18Dallas County, IAIA118,4570.4%–

19Union County, IAIA11,8290.4%–

20Clinton County, IAIA46,0020.4%–

21Kossuth County, IAIA14,3220.4%–

22Woodbury County, IAIA106,6490.3%–

23Webster County, IAIA36,8380.3%–

24Monroe County, IAIA7,4060.3%–

25Emmet County, IAIA9,1070.3%–

26Black Hawk County, IAIA131,5320.3%–

27Story County, IAIA101,2910.3%–

28Poweshiek County, IAIA18,3680.3%–

29Fremont County, IAIA6,5220.3%–

30Wapello County, IAIA35,2100.3%–

31Allamakee County, IAIA14,2380.3%–

32Jasper County, IAIA38,1530.2%–

33Hancock County, IAIA10,5280.2%–

34Scott County, IAIA175,2590.2%–

35Pottawattamie County, IAIA92,9960.2%–

36Floyd County, IAIA14,9010.2%–

37Decatur County, IAIA7,6550.2%–

38Carroll County, IAIA20,3030.2%–

39Clarke County, IAIA9,5740.2%–

40Bremer County, IAIA25,2960.2%–

41Winneshiek County, IAIA19,7330.1%–

42Linn County, IAIA232,0280.1%–

43Dickinson County, IAIA18,0770.1%–

44Dubuque County, IAIA99,3810.1%–

45Clay County, IAIA16,2020.1%–

46Jackson County, IAIA19,2880.1%–

47Boone County, IAIA26,7990.1%–

48Chickasaw County, IAIA11,6630.1%–

49Mahaska County, IAIA21,8800.1%–

50Tama County, IAIA16,7960.1%–

51Grundy County, IAIA12,3610.1%–

52Keokuk County, IAIA9,7970.1%–

53Sioux County, IAIA36,7740.1%–

54Audubon County, IAIA5,5090.1%–

55Ida County, IAIA6,7770.1%–

56Louisa County, IAIA10,4160.1%–

57Iowa County, IAIA16,5040.1%–

58Shelby County, IAIA11,6890.1%–

59Butler County, IAIA14,0490.1%–

60Worth County, IAIA7,3380.1%–

61Madison County, IAIA17,2700.1%–

62Warren County, IAIA57,3310.1%–

63Howard County, IAIA9,4150.1%–

64Crawford County, IAIA16,2370.0%–

65Buena Vista County, IAIA20,4490.0%–

66Clayton County, IAIA16,8450.0%–

67Buchanan County, IAIA20,8830.0%–

68Washington County, IAIA22,6670.0%–

69Humboldt County, IAIA9,4090.0%–

70Lee County, IAIA32,3060.0%–

71Plymouth County, IAIA25,6970.0%–

72Marion County, IAIA34,1920.0%–

73Benton County, IAIA26,0040.0%–

74Cedar County, IAIA18,3590.0%–

75Sac County, IAIA9,5250.0%–

76Jones County, IAIA21,2530.0%–

77Guthrie County, IAIA10,7820.0%–

78Cherokee County, IAIA11,3690.0%–

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