RANKING · 2020 CENSUS · 99 SHOWN OF 99

Largest Polish population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Polish 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 99 counties in Iowa that qualify, ranked against each other statewide.

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 POPULATIONVS 2010

01Polk County, IAIA516,5466,409+11%

02Scott County, IAIA175,2593,349+1%

03Johnson County, IAIA160,0443,119−17%

04Linn County, IAIA232,0282,945+1%

05Pottawattamie County, IAIA92,9961,814+23%

06Woodbury County, IAIA106,6491,791−31%

07Dallas County, IAIA118,4571,663+93%

08Story County, IAIA101,2911,522−8%

09Dubuque County, IAIA99,3811,216+8%

10Black Hawk County, IAIA131,5321,182−17%

11Muscatine County, IAIA41,853666+75%

12Warren County, IAIA57,331649+18%

13Jackson County, IAIA19,288502+81%

14Plymouth County, IAIA25,697489+65%

15Clinton County, IAIA46,002473−60%

16Sioux County, IAIA36,774412+1112%

17Lee County, IAIA32,306407+5%

18Cerro Gordo County, IAIA42,372399−40%

19Marshall County, IAIA39,890358−1%

20Webster County, IAIA36,838355−20%

21Jasper County, IAIA38,153353−13%

22Bremer County, IAIA25,296336+286%

23Buchanan County, IAIA20,883300−2%

24Jefferson County, IAIA15,291275+22%

25Des Moines County, IAIA38,077267−29%

26Iowa County, IAIA16,504261+62%

27Marion County, IAIA34,192261+11%

28Boone County, IAIA26,799242−10%

29Cedar County, IAIA18,359233−26%

30Benton County, IAIA26,004231−8%

31Dickinson County, IAIA18,077221+11%

32Harrison County, IAIA14,623219−31%

33Mahaska County, IAIA21,880197−3%

34Washington County, IAIA22,667189−49%

35Poweshiek County, IAIA18,368179−35%

36Page County, IAIA14,856175+213%

37Union County, IAIA11,829175+33%

38Humboldt County, IAIA9,409173+106%

39Clayton County, IAIA16,845171+51%

40Decatur County, IAIA7,655170+93%

41Henry County, IAIA19,349167−30%

42Winneshiek County, IAIA19,733165−7%

43Tama County, IAIA16,796162+3%

44Kossuth County, IAIA14,322159+184%

45Howard County, IAIA9,415155−18%

46Mills County, IAIA14,793152−54%

47Clarke County, IAIA9,574146+248%

48Floyd County, IAIA14,901143+175%

49Shelby County, IAIA11,689141+50%

50Cherokee County, IAIA11,369137−19%

51Carroll County, IAIA20,303134+47%

52Lucas County, IAIA8,847127−13%

53Madison County, IAIA17,270122+40%

54Davis County, IAIA9,230117+144%

55Winnebago County, IAIA10,251117+43%

56Crawford County, IAIA16,237116−53%

57Hancock County, IAIA10,528108−4%

58Delaware County, IAIA17,674108+21%

59Jones County, IAIA21,253105−55%

60Louisa County, IAIA10,416103+10%

61Calhoun County, IAIA9,562102+7%

62Cass County, IAIA12,96096−50%

63Chickasaw County, IAIA11,66396+85%

64Wapello County, IAIA35,21095−40%

65Fayette County, IAIA19,04793−68%

66Adams County, IAIA3,61792+119%

67Butler County, IAIA14,04991−25%

68Lyon County, IAIA12,35491+98%

69Van Buren County, IAIA7,13191+40%

70Keokuk County, IAIA9,79790+157%

71Buena Vista County, IAIA20,44987−18%

72Appanoose County, IAIA12,07785−54%

73Pocahontas County, IAIA6,81984−14%

74Ringgold County, IAIA4,64284+180%

75Grundy County, IAIA12,36183−16%

76Monona County, IAIA8,53982+3%

77Guthrie County, IAIA10,78279−29%

78Clay County, IAIA16,20278−50%

79Ida County, IAIA6,77777+97%

80Hardin County, IAIA16,45572−45%

81Emmet County, IAIA9,10771−70%

82Montgomery County, IAIA10,00269−19%

83Palo Alto County, IAIA8,89969−39%

84Franklin County, IAIA9,86862−63%

85Worth County, IAIA7,33861+135%

86Monroe County, IAIA7,40659−64%

87Hamilton County, IAIA14,94457−59%

88Sac County, IAIA9,52557+8%

89Wright County, IAIA12,80157+10%

90Mitchell County, IAIA10,65057−12%

91Fremont County, IAIA6,52256−59%

92Osceola County, IAIA5,98055−65%

93Adair County, IAIA7,40355−2%

94Allamakee County, IAIA14,23854−65%

95Greene County, IAIA8,65846−70%

96Wayne County, IAIA6,73846+18%

97O'Brien County, IAIA14,22038+46%

98Audubon County, IAIA5,50925−56%

99Taylor County, IAIA5,83510−85%

SHOWING 1–99 OF 99

Download CSV (full list, 99 rows)

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