RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest Polish population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Polish ancestry (2010 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 1.0%.

Polish Americans: full group profile →

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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

RANKPLACESTATEPOPPOLISH SHAREVS –

01Johnson County, IAIA160,0443.0%–

02Woodbury County, IAIA106,6492.6%–

03Clinton County, IAIA46,0022.4%–

04Osceola County, IAIA5,9802.4%–

05Emmet County, IAIA9,1072.2%–

06Mills County, IAIA14,7932.2%–

07Harrison County, IAIA14,6232.1%–

08Monroe County, IAIA7,4062.1%–

09Scott County, IAIA175,2592.0%–

10Howard County, IAIA9,4152.0%–

11Story County, IAIA101,2911.9%–

12Fremont County, IAIA6,5221.8%–

13Washington County, IAIA22,6671.7%–

14Cedar County, IAIA18,3591.7%–

15Greene County, IAIA8,6581.6%–

16Pottawattamie County, IAIA92,9961.6%–

17Lucas County, IAIA8,8471.6%–

18Franklin County, IAIA9,8681.6%–

19Cerro Gordo County, IAIA42,3721.5%–

20Crawford County, IAIA16,2371.5%–

21Buchanan County, IAIA20,8831.5%–

22Poweshiek County, IAIA18,3681.5%–

23Cherokee County, IAIA11,3691.4%–

24Appanoose County, IAIA12,0771.4%–

25Linn County, IAIA232,0281.4%–

26Dallas County, IAIA118,4571.4%–

27Jackson County, IAIA19,2881.4%–

28Fayette County, IAIA19,0471.4%–

29Cass County, IAIA12,9601.4%–

30Polk County, IAIA516,5461.4%–

31Jefferson County, IAIA15,2911.4%–

32Pocahontas County, IAIA6,8191.3%–

33Dubuque County, IAIA99,3811.2%–

34Warren County, IAIA57,3311.2%–

35Palo Alto County, IAIA8,8991.2%–

36Dickinson County, IAIA18,0771.2%–

37Plymouth County, IAIA25,6971.2%–

38Henry County, IAIA19,3491.2%–

39Webster County, IAIA36,8381.2%–

40Jones County, IAIA21,2531.1%–

41Black Hawk County, IAIA131,5321.1%–

42Jasper County, IAIA38,1531.1%–

43Allamakee County, IAIA14,2381.1%–

44Lee County, IAIA32,3061.1%–

45Union County, IAIA11,8291.1%–

46Decatur County, IAIA7,6551.0%–

47Taylor County, IAIA5,8351.0%–

48Adams County, IAIA3,6171.0%–

49Boone County, IAIA26,7991.0%–

50Guthrie County, IAIA10,7821.0%–

51Iowa County, IAIA16,5041.0%–

52Hancock County, IAIA10,5281.0%–

53Calhoun County, IAIA9,5621.0%–

54Benton County, IAIA26,0041.0%–

55Clay County, IAIA16,2020.9%–

56Des Moines County, IAIA38,0770.9%–

57Audubon County, IAIA5,5090.9%–

58Mahaska County, IAIA21,8800.9%–

59Marshall County, IAIA39,8900.9%–

60Muscatine County, IAIA41,8530.9%–

61Tama County, IAIA16,7960.9%–

62Hamilton County, IAIA14,9440.9%–

63Monona County, IAIA8,5390.9%–

64Van Buren County, IAIA7,1310.9%–

65Humboldt County, IAIA9,4090.8%–

66Winneshiek County, IAIA19,7330.8%–

67Butler County, IAIA14,0490.8%–

68Louisa County, IAIA10,4160.8%–

69Grundy County, IAIA12,3610.8%–

70Montgomery County, IAIA10,0020.8%–

71Shelby County, IAIA11,6890.8%–

72Winnebago County, IAIA10,2510.7%–

73Hardin County, IAIA16,4550.7%–

74Adair County, IAIA7,4030.7%–

75Marion County, IAIA34,1920.7%–

76Clayton County, IAIA16,8450.6%–

77Wayne County, IAIA6,7380.6%–

78Mitchell County, IAIA10,6500.6%–

79Ringgold County, IAIA4,6420.6%–

80Madison County, IAIA17,2700.6%–

81Davis County, IAIA9,2300.6%–

82Ida County, IAIA6,7770.5%–

83Buena Vista County, IAIA20,4490.5%–

84Sac County, IAIA9,5250.5%–

85Delaware County, IAIA17,6740.5%–

86Clarke County, IAIA9,5740.5%–

87Wapello County, IAIA35,2100.4%–

88Carroll County, IAIA20,3030.4%–

89Chickasaw County, IAIA11,6630.4%–

90Lyon County, IAIA12,3540.4%–

91Wright County, IAIA12,8010.4%–

92Bremer County, IAIA25,2960.4%–

93Kossuth County, IAIA14,3220.4%–

94Page County, IAIA14,8560.3%–

95Worth County, IAIA7,3380.3%–

96Keokuk County, IAIA9,7970.3%–

97Floyd County, IAIA14,9010.3%–

98O'Brien County, IAIA14,2200.2%–

99Sioux County, IAIA36,7740.1%–

SHOWING 1–99 OF 99

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