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RANKING · 2024 ACS · 99 SHOWN OF 99

Highest Irish population share, Iowa counties

Iowa counties ranked by the share of all residents who are Irish ancestry (2024 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPIRISH SHAREVS 2010
01Palo Alto County, IAIA8,89921.3%+3.2 pts
02Monroe County, IAIA7,40621.1%+0.4 pts
03Dubuque County, IAIA99,38119.4%−3.9 pts
04Iowa County, IAIA16,50416.5%−1.4 pts
05Madison County, IAIA17,27016.4%−3.4 pts
06Jones County, IAIA21,25316.4%−1.9 pts
07Clinton County, IAIA46,00216.4%−1.7 pts
08Monona County, IAIA8,53916.3%−1.0 pts
09Lee County, IAIA32,30616.2%+0.0 pts
10Warren County, IAIA57,33115.8%−0.5 pts
11Benton County, IAIA26,00415.8%−0.9 pts
12Scott County, IAIA175,25915.4%−1.0 pts
13Buchanan County, IAIA20,88315.3%−4.1 pts
14Dallas County, IAIA118,45715.3%−0.6 pts
15Jackson County, IAIA19,28815.3%−0.9 pts
16Allamakee County, IAIA14,23815.1%−3.6 pts
17Union County, IAIA11,82915.0%−1.6 pts
18Lucas County, IAIA8,84714.9%−1.7 pts
19Johnson County, IAIA160,04414.5%−3.1 pts
20Delaware County, IAIA17,67414.3%−3.0 pts
21Adams County, IAIA3,61714.3%−1.6 pts
22Guthrie County, IAIA10,78214.3%+1.0 pts
23Cedar County, IAIA18,35914.3%+0.3 pts
24Fayette County, IAIA19,04714.2%−0.4 pts
25Linn County, IAIA232,02814.0%−4.2 pts
26Humboldt County, IAIA9,40913.8%+2.8 pts
27Fremont County, IAIA6,52213.7%−2.0 pts
28Greene County, IAIA8,65813.5%−2.9 pts
29Harrison County, IAIA14,62313.4%−5.9 pts
30Polk County, IAIA516,54613.3%−2.0 pts
31Carroll County, IAIA20,30313.3%+1.1 pts
32Bremer County, IAIA25,29613.0%+1.2 pts
33Mills County, IAIA14,79312.9%−2.6 pts
34Appanoose County, IAIA12,07712.7%−2.9 pts
35Des Moines County, IAIA38,07712.6%−4.1 pts
36Wayne County, IAIA6,73812.6%−1.3 pts
37Adair County, IAIA7,40312.5%−0.0 pts
38Boone County, IAIA26,79912.5%−0.5 pts
39Pottawattamie County, IAIA92,99612.5%−5.7 pts
40Calhoun County, IAIA9,56212.5%−1.2 pts
41Winneshiek County, IAIA19,73312.3%−2.9 pts
42Plymouth County, IAIA25,69712.1%−0.7 pts
43Pocahontas County, IAIA6,81912.1%−0.5 pts
44Cass County, IAIA12,96012.0%−1.8 pts
45Jasper County, IAIA38,15311.9%−2.3 pts
46Washington County, IAIA22,66711.9%−3.3 pts
47Mahaska County, IAIA21,88011.7%−2.4 pts
48Henry County, IAIA19,34911.7%−4.2 pts
49Kossuth County, IAIA14,32211.7%−2.9 pts
50Floyd County, IAIA14,90111.6%+1.1 pts
51Clayton County, IAIA16,84511.6%−1.5 pts
52Webster County, IAIA36,83811.5%−5.7 pts
53Ida County, IAIA6,77711.5%−3.7 pts
54Marion County, IAIA34,19211.5%−2.6 pts
55Poweshiek County, IAIA18,36811.4%−4.3 pts
56Black Hawk County, IAIA131,53211.3%−2.5 pts
57Chickasaw County, IAIA11,66311.2%−1.4 pts
58Van Buren County, IAIA7,13111.1%−2.6 pts
59Dickinson County, IAIA18,07711.1%−1.8 pts
60Mitchell County, IAIA10,65010.9%−1.4 pts
61Woodbury County, IAIA106,64910.9%−4.8 pts
62Cherokee County, IAIA11,36910.8%−3.4 pts
63Story County, IAIA101,29110.7%−2.0 pts
64Page County, IAIA14,85610.7%−6.0 pts
65Butler County, IAIA14,04910.6%−0.7 pts
66Cerro Gordo County, IAIA42,37210.6%−2.7 pts
67Emmet County, IAIA9,10710.4%−3.3 pts
68Keokuk County, IAIA9,79710.3%−6.8 pts
69Tama County, IAIA16,79610.3%−0.8 pts
70Shelby County, IAIA11,68910.3%−2.1 pts
71Ringgold County, IAIA4,64210.3%−7.0 pts
72Decatur County, IAIA7,65510.2%−5.2 pts
73Clay County, IAIA16,20210.1%−2.8 pts
74Wapello County, IAIA35,2109.9%−7.6 pts
75Clarke County, IAIA9,5749.7%−4.0 pts
76Grundy County, IAIA12,3619.7%−5.4 pts
77Jefferson County, IAIA15,2919.7%−3.5 pts
78Taylor County, IAIA5,8359.6%−6.3 pts
79Hancock County, IAIA10,5289.6%+0.5 pts
80Marshall County, IAIA39,8909.5%−3.9 pts
81Louisa County, IAIA10,4169.4%−2.6 pts
82Hardin County, IAIA16,4559.1%−1.9 pts
83Sac County, IAIA9,5259.0%−2.7 pts
84Montgomery County, IAIA10,0028.8%−4.9 pts
85Muscatine County, IAIA41,8538.7%−4.5 pts
86Worth County, IAIA7,3388.5%−3.7 pts
87Davis County, IAIA9,2308.4%−3.7 pts
88Audubon County, IAIA5,5098.0%−2.5 pts
89Howard County, IAIA9,4158.0%−8.1 pts
90Winnebago County, IAIA10,2517.9%−0.3 pts
91O'Brien County, IAIA14,2207.8%+0.6 pts
92Hamilton County, IAIA14,9447.4%−6.0 pts
93Franklin County, IAIA9,8687.2%−3.0 pts
94Crawford County, IAIA16,2376.3%−5.1 pts
95Buena Vista County, IAIA20,4496.2%−4.3 pts
96Wright County, IAIA12,8016.0%−10.4 pts
97Lyon County, IAIA12,3545.8%−2.4 pts
98Osceola County, IAIA5,9805.6%−1.9 pts
99Sioux County, IAIA36,7744.5%−2.1 pts
SHOWING 1–99 OF 99
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES