RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest Polish population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Polish ancestry (2020 American Community Survey). A concentration measure: Polish residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 0.9%.

Polish Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPPOLISH SHAREVS 2010

01Jackson County, IAIA19,2882.6%+1.2 pts

02Adams County, IAIA3,6172.5%+1.5 pts

03Decatur County, IAIA7,6552.1%+1.1 pts

04Johnson County, IAIA160,0442.1%−0.9 pts

05Plymouth County, IAIA25,6971.9%+0.8 pts

06Pottawattamie County, IAIA92,9961.9%+0.3 pts

07Scott County, IAIA175,2591.9%−0.1 pts

08Dallas County, IAIA118,4571.8%+0.4 pts

09Humboldt County, IAIA9,4091.8%+1.0 pts

10Woodbury County, IAIA106,6491.7%−0.8 pts

11Ringgold County, IAIA4,6421.7%+1.1 pts

12Howard County, IAIA9,4151.7%−0.3 pts

13Iowa County, IAIA16,5041.6%+0.6 pts

14Story County, IAIA101,2911.6%−0.3 pts

15Muscatine County, IAIA41,8531.6%+0.7 pts

16Harrison County, IAIA14,6231.6%−0.6 pts

17Clarke County, IAIA9,5741.6%+1.1 pts

18Jefferson County, IAIA15,2911.5%+0.2 pts

19Lucas County, IAIA8,8471.5%−0.1 pts

20Union County, IAIA11,8291.4%+0.4 pts

21Buchanan County, IAIA20,8831.4%0.0 pts

22Bremer County, IAIA25,2961.3%+1.0 pts

23Polk County, IAIA516,5461.3%−0.1 pts

24Linn County, IAIA232,0281.3%−0.1 pts

25Davis County, IAIA9,2301.3%+0.8 pts

26Van Buren County, IAIA7,1311.3%+0.4 pts

27Dickinson County, IAIA18,0771.3%+0.1 pts

28Warren County, IAIA57,3311.3%+0.1 pts

29Cedar County, IAIA18,3591.3%−0.5 pts

30Dubuque County, IAIA99,3811.3%0.0 pts

31Pocahontas County, IAIA6,8191.2%−0.1 pts

32Shelby County, IAIA11,6891.2%+0.5 pts

33Cherokee County, IAIA11,3691.2%−0.2 pts

34Lee County, IAIA32,3061.2%+0.1 pts

35Sioux County, IAIA36,7741.2%+1.1 pts

36Page County, IAIA14,8561.2%+0.8 pts

37Ida County, IAIA6,7771.1%+0.6 pts

38Winnebago County, IAIA10,2511.1%+0.4 pts

39Kossuth County, IAIA14,3221.1%+0.7 pts

40Calhoun County, IAIA9,5621.1%+0.1 pts

41Clinton County, IAIA46,0021.0%−1.4 pts

42Mills County, IAIA14,7931.0%−1.2 pts

43Hancock County, IAIA10,5281.0%0.0 pts

44Webster County, IAIA36,8381.0%−0.2 pts

45Clayton County, IAIA16,8451.0%+0.4 pts

46Poweshiek County, IAIA18,3681.0%−0.5 pts

47Tama County, IAIA16,7961.0%+0.1 pts

48Jasper County, IAIA38,1531.0%−0.1 pts

49Monona County, IAIA8,5390.9%+0.1 pts

50Cerro Gordo County, IAIA42,3720.9%−0.6 pts

51Louisa County, IAIA10,4160.9%+0.1 pts

52Boone County, IAIA26,7990.9%−0.1 pts

53Osceola County, IAIA5,9800.9%−1.5 pts

54Floyd County, IAIA14,9010.9%+0.6 pts

55Benton County, IAIA26,0040.9%−0.1 pts

56Marshall County, IAIA39,8900.9%0.0 pts

57Black Hawk County, IAIA131,5320.9%−0.2 pts

58Keokuk County, IAIA9,7970.9%+0.6 pts

59Mahaska County, IAIA21,8800.9%0.0 pts

60Washington County, IAIA22,6670.9%−0.9 pts

61Henry County, IAIA19,3490.8%−0.3 pts

62Worth County, IAIA7,3380.8%+0.5 pts

63Winneshiek County, IAIA19,7330.8%0.0 pts

64Fremont County, IAIA6,5220.8%−1.0 pts

65Chickasaw County, IAIA11,6630.8%+0.4 pts

66Marion County, IAIA34,1920.8%+0.1 pts

67Adair County, IAIA7,4030.8%+0.1 pts

68Palo Alto County, IAIA8,8990.8%−0.4 pts

69Lyon County, IAIA12,3540.8%+0.4 pts

70Emmet County, IAIA9,1070.8%−1.5 pts

71Monroe County, IAIA7,4060.8%−1.3 pts

72Madison County, IAIA17,2700.8%+0.2 pts

73Cass County, IAIA12,9600.7%−0.6 pts

74Guthrie County, IAIA10,7820.7%−0.3 pts

75Wayne County, IAIA6,7380.7%+0.1 pts

76Montgomery County, IAIA10,0020.7%−0.1 pts

77Crawford County, IAIA16,2370.7%−0.8 pts

78Appanoose County, IAIA12,0770.7%−0.7 pts

79Des Moines County, IAIA38,0770.7%−0.3 pts

80Grundy County, IAIA12,3610.7%−0.1 pts

81Carroll County, IAIA20,3030.7%+0.2 pts

82Delaware County, IAIA17,6740.6%+0.1 pts

83Butler County, IAIA14,0490.6%−0.2 pts

84Franklin County, IAIA9,8680.6%−0.9 pts

85Sac County, IAIA9,5250.6%+0.1 pts

86Mitchell County, IAIA10,6500.5%−0.1 pts

87Greene County, IAIA8,6580.5%−1.1 pts

88Jones County, IAIA21,2530.5%−0.6 pts

89Clay County, IAIA16,2020.5%−0.5 pts

90Fayette County, IAIA19,0470.5%−0.9 pts

91Audubon County, IAIA5,5090.5%−0.5 pts

92Wright County, IAIA12,8010.5%+0.1 pts

93Buena Vista County, IAIA20,4490.4%−0.1 pts

94Hardin County, IAIA16,4550.4%−0.3 pts

95Allamakee County, IAIA14,2380.4%−0.7 pts

96Hamilton County, IAIA14,9440.4%−0.5 pts

97O'Brien County, IAIA14,2200.3%+0.1 pts

98Wapello County, IAIA35,2100.3%−0.2 pts

99Taylor County, IAIA5,8350.2%−0.9 pts

SHOWING 1–99 OF 99

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