RANKING · 2010 CENSUS · 500 SHOWN OF 3,130

Highest Irish population share, US counties · 2010

US counties ranked by the share of all residents who are Irish ancestry (2010 American Community Survey). A concentration measure: Irish residents as a percentage of total population. McPherson County, Nebraska leads at 35.6%. 3,130 counties qualify in total. The top 25 average 28.7%, against an all-counties median of 12.3%.

Irish 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

RANKPLACESTATEPOPIRISH SHAREVS –

USUnited States308,745,53811.7%–

01McPherson County, NENE36935.6%–

02Plymouth County, MAMA546,82933.7%–

03Silver Bow County, MTMT36,11832.6%–

04Norfolk County, MAMA739,74931.8%–

05Loving County, TXTX5231.7%–

06Greeley County, NENE2,15431.5%–

07Houston County, TNTN8,47931.0%–

08Cape May County, NJNJ93,39030.9%–

09Delaware County, PAPA580,93728.7%–

10Gloucester County, NJNJ312,63828.4%–

11Washington County, RIRI129,79527.8%–

12Putnam County, NYNY99,02827.7%–

13Lackawanna County, PAPA216,50227.4%–

14Rensselaer County, NYNY160,51027.4%–

15Sussex County, NJNJ148,06327.2%–

16Barnstable County, MAMA233,53927.0%–

17Rockingham County, NHNH324,07726.9%–

18Bucks County, PAPA647,82826.7%–

19Kent County, RIRI173,49526.7%–

20Fulton County, ARAR12,49226.6%–

21Hardin County, ILIL3,58826.5%–

22Skagway, AKAK1,10426.2%–

23Deer Lodge County, MTMT9,70926.2%–

24Newport County, RIRI83,05125.5%–

25Fallon County, MTMT2,95924.8%–

26Carroll County, NHNH52,78424.7%–

27Briscoe County, TXTX1,47424.7%–

28Cayuga County, NYNY74,36524.4%–

29Chester County, PAPA557,11624.3%–

30Wayne County, PAPA51,70324.3%–

31Saratoga County, NYNY241,34324.0%–

32Albany County, NYNY321,22524.0%–

33Dutchess County, NYNY300,70823.9%–

34Grant County, NENE56123.8%–

35Warren County, NYNY65,02023.6%–

36Middlesex County, MAMA1,669,97923.5%–

37Hunterdon County, NJNJ131,78123.5%–

38Berkshire County, MAMA128,22423.5%–

39Ocean County, NJNJ673,74623.5%–

40Ouray County, COCO5,26523.4%–

41Monmouth County, NJNJ651,03523.4%–

42Essex County, MAMA826,65323.3%–

43Dubuque County, IAIA99,38123.3%–

44Onondaga County, NYNY466,58423.3%–

45Sabine County, TXTX10,01223.3%–

46Suffolk County, NYNY1,546,09023.0%–

47Livingston County, NYNY61,43823.0%–

48Grundy County, ILIL54,05223.0%–

49Trinity County, CACA15,72022.9%–

50Gallatin County, ILIL4,61622.9%–

51Taylor County, WVWV16,28722.9%–

52Oswego County, NYNY118,56922.9%–

53Hillsborough County, NHNH433,41522.8%–

54Stone County, ARAR12,70322.8%–

55Hamilton County, NYNY5,00622.8%–

56Montgomery County, PAPA877,64322.6%–

57Rutland County, VTVT59,65322.6%–

58San Augustine County, TXTX7,72222.4%–

59Schoharie County, NYNY30,17622.4%–

60Pike County, PAPA62,80822.4%–

61Johnson County, WYWY8,90822.4%–

62Queen Anne's County, MDMD54,44822.4%–

63Essex County, NYNY36,43822.2%–

64Loup County, NENE57022.2%–

65Worcester County, MAMA888,50222.2%–

66Bristol County, RIRI50,00122.2%–

67Hampshire County, MAMA164,06522.2%–

68Holt County, NENE10,06722.1%–

69Burlington County, NJNJ481,43922.0%–

70Izard County, ARAR14,40522.0%–

71Washington County, NYNY59,35322.0%–

72Sioux County, NENE1,18821.9%–

73Mariposa County, CACA16,91821.9%–

74Herkimer County, NYNY59,21921.8%–

75Broome County, NYNY195,73621.8%–

76Roger Mills County, OKOK3,25921.8%–

77Windham County, VTVT45,20421.8%–

78Nicholas County, WVWV23,84821.7%–

79Butler County, PAPA200,16921.7%–

80Mayes County, OKOK40,41621.6%–

81Cecil County, MDMD107,13121.4%–

82Susquehanna County, PAPA38,23721.4%–

83Calhoun County, WVWV5,97821.3%–

84Comanche County, KSKS1,67321.3%–

85Lafayette County, WIWI17,47821.2%–

86Cumberland County, MEME317,22221.1%–

87Delaware County, NYNY44,30521.1%–

88Dent County, MOMO14,58421.1%–

89Warren County, NJNJ112,95321.1%–

90Ulster County, NYNY183,33021.1%–

91Marion County, ARAR17,59321.1%–

92Clark County, KSKS1,90021.0%–

93Yates County, NYNY24,54721.0%–

94Armstrong County, TXTX1,84320.9%–

95St. Clair County, MOMO9,97620.9%–

96Ontario County, NYNY113,13020.9%–

97Polk County, TNTN18,59220.8%–

98Owen County, ININ21,88620.7%–

99Choctaw County, MSMS8,04820.7%–

100Belknap County, NHNH65,14720.7%–

101Camden County, NJNJ535,79920.7%–

102Monroe County, IAIA7,40620.7%–

103Hamilton County, ILIL7,85920.7%–

104Gallatin County, KYKY8,84020.6%–

105Sullivan County, PAPA5,85620.6%–

106Salem County, NJNJ66,28020.5%–

107Breckinridge County, KYKY21,50320.5%–

108Van Buren County, ARAR16,23820.5%–

109Morris County, NJNJ524,25120.4%–

110Merrimack County, NHNH158,07820.4%–

111Bracken County, KYKY8,51120.4%–

112Allegheny County, PAPA1,225,03520.3%–

113Orange County, NYNY417,66920.3%–

114Granite County, MTMT3,65820.2%–

115Indiana County, PAPA82,87820.2%–

116Owen County, KYKY11,60120.2%–

117Haines, AKAK2,06820.2%–

118Chemung County, NYNY80,41520.2%–

119Summers County, WVWV11,53220.2%–

120Jefferson County, NYNY111,54020.1%–

121Pocahontas County, WVWV7,60220.1%–

122Steuben County, NYNY91,85520.1%–

123Blair County, PAPA119,54120.1%–

124Stewart County, TNTN14,43920.1%–

125Storey County, NVNV4,26020.1%–

126Meigs County, TNTN14,18620.1%–

127Dolores County, COCO2,46620.0%–

128Luzerne County, PAPA332,12620.0%–

129Cattaraugus County, NYNY75,39020.0%–

130Wheeler County, OROR1,47220.0%–

131Little River County, ARAR11,76319.9%–

132Garfield County, WAWA2,41619.9%–

133Franklin County, MAMA70,69819.8%–

134Wyoming County, PAPA25,79019.8%–

135Madison County, IAIA17,27019.8%–

136Kenton County, KYKY175,77919.8%–

137Beckham County, OKOK22,15919.8%–

138Converse County, WYWY13,82419.8%–

139Grand County, COCO16,49619.8%–

140Harford County, MDMD266,44619.8%–

141Pushmataha County, OKOK10,80719.7%–

142Strafford County, NHNH135,04319.7%–

143Jo Daviess County, ILIL21,59419.7%–

144Cass County, NENE27,65719.7%–

145Alcorn County, MSMS34,56919.6%–

146Denali, AKAK1,61619.6%–

147Sullivan County, NYNY80,58619.6%–

148Schuylkill County, PAPA145,08519.6%–

149Oneida County, NYNY226,39219.5%–

150Stone County, MOMO32,50319.5%–

151McCurtain County, OKOK30,74419.5%–

152Columbia County, NYNY60,16819.5%–

153Custer County, IDID4,63619.5%–

154Monroe County, WVWV12,49119.5%–

155Dickson County, TNTN58,66219.4%–

156Atchison County, KSKS16,17219.4%–

157Buchanan County, IAIA20,88319.4%–

158Haakon County, SDSD1,80219.4%–

159Armstrong County, PAPA63,69819.4%–

160San Jacinto County, TXTX29,48819.4%–

161Borden County, TXTX56719.3%–

162Lake County, OROR8,18719.3%–

163York County, MEME222,43419.3%–

164Harrison County, IAIA14,62319.3%–

165Weston County, WYWY6,84019.3%–

166Pendleton County, KYKY14,80019.3%–

167Lewis and Clark County, MTMT75,33119.3%–

168Searcy County, ARAR7,84819.2%–

169Bristol County, MAMA593,64019.2%–

170Martin County, ININ9,85619.2%–

171Woodson County, KSKS3,11819.2%–

172Dearborn County, ININ51,60919.2%–

173Rains County, TXTX13,54219.2%–

174New Castle County, DEDE588,02619.2%–

175St. Charles County, MOMO426,49919.1%–

176Pope County, ILIL3,67219.1%–

177Cheshire County, NHNH78,26919.1%–

178Chittenden County, VTVT169,11519.1%–

179Powell County, MTMT7,15719.1%–

180Ohio County, WVWV40,49619.1%–

181Jefferson County, MTMT13,32919.1%–

182Prentiss County, MSMS25,28419.1%–

183Garland County, ARAR99,69519.1%–

184Bollinger County, MOMO10,64619.1%–

185Meade County, KYKY30,69919.1%–

186Greene County, PAPA33,88519.1%–

187Taney County, MOMO57,00119.1%–

188Carroll County, MDMD176,67719.1%–

189Beaver County, PAPA166,03219.1%–

190Genesee County, NYNY58,41619.0%–

191Allegany County, NYNY46,80019.0%–

192Fleming County, KYKY15,78719.0%–

193Boyd County, KYKY47,75119.0%–

194LaSalle County, ILIL107,77319.0%–

195Washington County, PAPA210,80219.0%–

196Knox County, MEME41,11719.0%–

197Madison County, NYNY67,12018.9%–

198Oldham County, TXTX1,78318.9%–

199Madison County, MTMT10,02618.9%–

200Lake County, OHOH232,21718.9%–

201Otsego County, NYNY60,58918.8%–

202Cullman County, ALAL94,00918.8%–

203Dawson County, GAGA35,36518.8%–

204Iowa County, WIWI23,95118.8%–

205Nantucket County, MAMA14,75818.8%–

206Nowata County, OKOK9,52218.8%–

207Bennington County, VTVT36,63018.8%–

208Franklin County, FLFL13,02918.8%–

209Lee County, ILIL32,91418.8%–

210McHenry County, ILIL317,75118.7%–

211Gilmer County, GAGA33,89418.7%–

212Sequatchie County, TNTN17,86118.7%–

213Jefferson County, MOMO233,13218.7%–

214Allamakee County, IAIA14,23818.7%–

215Franklin County, ILIL36,91618.7%–

216Decatur County, KSKS2,71618.7%–

217Baxter County, ARAR42,98218.7%–

218Chase County, NENE3,71818.7%–

219Grafton County, NHNH93,22518.7%–

220Hancock County, WVWV27,72918.7%–

221Calhoun County, FLFL13,28918.6%–

222Boone County, KYKY145,31618.6%–

223Jefferson County, KSKS18,29618.6%–

224Fannin County, GAGA26,11118.6%–

225Anne Arundel County, MDMD603,38018.6%–

226Webster County, GAGA2,36918.6%–

227Pontotoc County, OKOK38,52818.6%–

228Will County, ILIL712,25318.6%–

229Amador County, CACA41,87618.6%–

230Dukes County, MAMA21,21918.5%–

231Garden County, NENE1,80418.5%–

232Porter County, ININ176,04918.5%–

233Greenup County, KYKY35,21318.5%–

234Webster County, MSMS10,16718.5%–

235Cambria County, PAPA128,96818.5%–

236Greene County, NYNY47,23818.4%–

237Seneca County, NYNY32,88318.4%–

238Lewis County, TNTN13,48718.4%–

239Harding County, SDSD1,33118.4%–

240Miami County, KSKS36,24018.4%–

241Golden Valley County, MTMT84418.4%–

242Clinton County, MOMO21,66118.4%–

243Campbell County, KYKY95,44118.4%–

244Greer County, OKOK5,37318.4%–

245Reynolds County, MOMO5,99218.3%–

246Grant County, OKOK4,06718.3%–

247Medina County, OHOH185,02518.3%–

248Jones County, IAIA21,25318.3%–

249Warren County, MOMO39,01618.3%–

250Delta County, TXTX5,54918.3%–

251Harrison County, WVWV64,22118.3%–

252Morgan County, KYKY14,41518.3%–

253Custer County, MTMT12,03418.3%–

254Niagara County, NYNY208,91218.3%–

255Fulton County, NYNY52,21618.3%–

256Linn County, IAIA232,02818.2%–

257Nevada County, CACA101,91118.2%–

258Talbot County, MDMD38,23818.2%–

259Mercer County, ILIL15,22918.2%–

260Pottawattamie County, IAIA92,99618.2%–

261Hernando County, FLFL221,70118.2%–

262Lincoln County, MOMO66,67618.2%–

263Crawford County, MIMI13,72218.2%–

264Worcester County, MDMD54,45918.2%–

265Franklin County, NYNY46,50018.2%–

266Dade County, GAGA16,15418.1%–

267Wayne County, WVWV37,30918.1%–

268Logan County, ARAR21,63318.1%–

269Hickman County, TNTN26,21918.1%–

270Scott County, ARAR9,96518.1%–

271Clermont County, OHOH216,97718.1%–

272Adair County, MOMO25,68418.1%–

273Gallatin County, MTMT128,74018.1%–

274Arthur County, NENE39618.1%–

275Lake County, CACA67,77218.1%–

276Pottawatomie County, KSKS27,18618.1%–

277Palo Alto County, IAIA8,89918.1%–

278Westmoreland County, PAPA349,32418.0%–

279Clinton County, IAIA46,00218.0%–

280Grant County, KYKY26,18118.0%–

281Erie County, PAPA265,83218.0%–

282Atlantic County, NJNJ278,65718.0%–

283Crawford County, PAPA81,79218.0%–

284Schuyler County, NYNY16,92418.0%–

285Wilson County, KSKS8,29918.0%–

286Modoc County, CACA8,42618.0%–

287Teller County, COCO24,75618.0%–

288Iowa County, IAIA16,50417.9%–

289Camden County, MOMO44,04717.9%–

290Roane County, WVWV13,31717.9%–

291Belmont County, OHOH64,43417.9%–

292Venango County, PAPA49,34617.9%–

293Tishomingo County, MSMS18,63917.9%–

294Sussex County, DEDE277,14017.9%–

295Ripley County, MOMO10,71717.9%–

296Indian River County, FLFL172,79917.8%–

297Greenbrier County, WVWV31,57817.8%–

298Clay County, MOMO265,03217.8%–

299Hooker County, NENE68617.8%–

300Marion County, WVWV55,58417.8%–

301Union County, OROR25,90017.8%–

302Erie County, NYNY946,74117.8%–

303Saline County, ILIL22,77217.8%–

304Missoula County, MTMT123,51317.8%–

305Southeast Fairbanks Census Area, AKAK7,27017.8%–

306Cortland County, NYNY45,85017.8%–

307Tioga County, NYNY47,45317.8%–

308Tyler County, TXTX20,44317.8%–

309Clearwater County, IDID9,11817.8%–

310Columbiana County, OHOH99,37717.7%–

311Union County, SDSD17,40217.7%–

312Grady County, OKOK59,12817.7%–

313Boone County, ARAR38,62817.7%–

314Linn County, MOMO11,81517.7%–

315Niobrara County, WYWY2,34117.7%–

316Lincoln County, MEME36,59517.7%–

317St. Lawrence County, NYNY105,48817.7%–

318Toole County, MTMT5,21117.7%–

319Marshall County, WVWV29,15917.6%–

320Johnson County, IAIA160,04417.6%–

321Hitchcock County, NENE2,46717.6%–

322Mathews County, VAVA8,52917.6%–

323Catoosa County, GAGA69,62817.6%–

324Livingston County, MIMI197,31517.6%–

325Clay County, WVWV7,53817.6%–

326Shoshone County, IDID14,13017.6%–

327Wrangell, AKAK2,00717.6%–

328Ellis County, OKOK3,61317.6%–

329Custer County, COCO5,59017.6%–

330Labette County, KSKS19,68517.6%–

331Menifee County, KYKY6,43017.6%–

332Henry County, MOMO22,67117.6%–

333Knox County, MOMO3,72817.6%–

334Calvert County, MDMD94,48417.6%–

335Orleans County, NYNY39,82517.5%–

336Benewah County, IDID10,50817.5%–

337Throckmorton County, TXTX1,55417.5%–

338Lumpkin County, GAGA36,17817.5%–

339Brooke County, WVWV21,14217.5%–

340DeKalb County, ILIL101,83517.5%–

341Wapello County, IAIA35,21017.5%–

342Dixie County, FLFL18,03817.5%–

343Sarpy County, NENE208,30317.5%–

344Schenectady County, NYNY162,58117.5%–

345Sharp County, ARAR18,12217.4%–

346Boone County, NENE5,35517.4%–

347Frederick County, MDMD302,88317.4%–

348Hamilton County, TXTX8,68017.4%–

349Nodaway County, MOMO20,17417.4%–

350St. Mary's County, MDMD116,69217.4%–

351Mercer County, MOMO3,40417.4%–

352Lawrence County, KYKY15,76517.4%–

353Buchanan County, MOMO83,54017.4%–

354Crawford County, ININ10,50917.4%–

355Hampden County, MAMA464,33817.4%–

356Delaware County, IAIA17,67417.4%–

357Lawrence County, ARAR16,27317.4%–

358Aroostook County, MEME66,60917.4%–

359Lawrence County, PAPA83,91117.3%–

360Richland County, WIWI17,03617.3%–

361Platte County, WYWY8,63417.3%–

362Grundy County, TNTN14,11617.3%–

363Ringgold County, IAIA4,64217.3%–

364Monona County, IAIA8,53917.3%–

365Emmet County, MIMI33,77517.3%–

366Transylvania County, NCNC34,21117.3%–

367Williamson County, ILIL67,22517.3%–

368Windsor County, VTVT57,31217.3%–

369New Madrid County, MOMO15,08617.3%–

370McKean County, PAPA38,98417.3%–

371Webster County, IAIA36,83817.2%–

372Cabell County, WVWV91,18317.2%–

373Real County, TXTX2,74517.2%–

374Livingston County, ILIL35,05717.2%–

375Keokuk County, IAIA9,79717.2%–

376Penobscot County, MEME157,96717.2%–

377Catahoula Parish, LALA8,22317.2%–

378Rappahannock County, VAVA7,43917.2%–

379Lane County, KSKS1,50817.2%–

380Fayette County, PAPA123,02117.2%–

381Addison County, VTVT38,04817.2%–

382Polk County, ARAR19,48617.1%–

383Pike County, GAGA20,93217.1%–

384Upshur County, TXTX44,41017.1%–

385Waldo County, MEME40,69317.1%–

386Leavenworth County, KSKS84,59017.1%–

387St. Francois County, MOMO67,80917.1%–

388Jefferson County, OHOH63,59717.1%–

389Geauga County, OHOH95,67617.1%–

390Portage County, OHOH163,40417.1%–

391DeKalb County, MOMO9,79517.1%–

392Boyd County, NENE1,67417.1%–

393Red Willow County, NENE10,30717.1%–

394Hunt County, TXTX123,33617.1%–

395Monongalia County, WVWV107,99117.1%–

396Cascade County, MTMT85,02917.1%–

397Calaveras County, CACA46,60517.1%–

398Monroe County, PAPA167,17917.0%–

399Effingham County, GAGA74,39717.0%–

400Lincoln County, NMNM19,84417.0%–

401Burnet County, TXTX57,01517.0%–

402Kennebec County, MEME129,06717.0%–

403Coffey County, KSKS8,46717.0%–

404Washington County, MEME31,33417.0%–

405McClain County, OKOK49,64717.0%–

406Benton County, ININ8,88317.0%–

407Mineral County, MTMT5,18516.9%–

408Nassau County, NYNY1,398,93916.9%–

409Douglas County, NENE606,46016.9%–

410Morgan County, TNTN22,16016.9%–

411Garfield County, MTMT1,14816.9%–

412Newton County, ININ14,18816.9%–

413Bates County, MOMO16,51216.9%–

414Perry County, ARAR10,30916.9%–

415Box Butte County, NENE10,49416.9%–

416Andrew County, MOMO18,24116.9%–

417Craig County, OKOK14,51816.9%–

418Cimarron County, OKOK2,05916.9%–

419Coos County, NHNH31,34316.9%–

420Mercer County, PAPA107,86016.8%–

421Harrison County, MOMO8,28116.8%–

422Pershing County, NVNV6,42116.8%–

423Morrill County, NENE4,40416.8%–

424Ballard County, KYKY7,59416.8%–

425Doddridge County, WVWV7,63416.8%–

426Linn County, KSKS9,95016.8%–

427Bath County, KYKY13,17616.8%–

428Lewis County, NYNY26,47916.8%–

429Hutchinson County, TXTX19,63316.8%–

430Anderson County, KYKY25,22516.8%–

431Sagadahoc County, MEME37,97916.8%–

432Johnson County, KSKS636,90616.8%–

433Cleburne County, ALAL15,97016.8%–

434Huntingdon County, PAPA43,00116.8%–

435Greene County, ININ31,16516.8%–

436Blackford County, ININ11,73016.7%–

437Lorain County, OHOH323,21916.7%–

438Chaffee County, COCO20,83116.7%–

439Page County, IAIA14,85616.7%–

440Benton County, IAIA26,00416.7%–

441Des Moines County, IAIA38,07716.7%–

442Isabella County, MIMI64,69116.7%–

443Washington County, OHOH58,38916.7%–

444Putnam County, ILIL5,61916.7%–

445Montgomery County, ARAR8,57916.7%–

446Charlevoix County, MIMI26,03616.7%–

447Vernon County, MOMO19,94616.7%–

448Lafayette County, MOMO33,53116.7%–

449Marshall County, ILIL11,47316.7%–

450Greenwood County, KSKS5,82616.7%–

451Cleburne County, ARAR25,67216.7%–

452Douglas County, COCO399,39616.7%–

453Douglas County, OROR111,95116.7%–

454Park County, COCO18,31416.7%–

455Chenango County, NYNY45,71516.7%–

456Neosho County, KSKS15,63716.7%–

457Creek County, OKOK74,96716.7%–

458Caledonia County, VTVT30,41416.6%–

459Benton County, TNTN16,18316.6%–

460Washington County, OKOK54,03716.6%–

461Idaho County, IDID17,87416.6%–

462Monroe County, NYNY750,50616.6%–

463Perkins County, NENE2,84916.6%–

464Grant County, ARAR18,75616.6%–

465Logan County, WVWV30,37516.6%–

466Butte County, SDSD10,85616.6%–

467Mahoning County, OHOH224,70616.6%–

468Butler County, MOMO41,90416.6%–

469Lucas County, IAIA8,84716.6%–

470Union County, IAIA11,82916.5%–

471Piscataquis County, MEME17,40916.5%–

472DuPage County, ILIL934,29816.5%–

473Lewis County, IDID3,70416.5%–

474Orange County, VTVT30,00216.5%–

475Custer County, NENE10,50016.5%–

476Jasper County, ININ33,89416.5%–

477Madison County, OHOH46,98516.5%–

478Crawford County, WIWI15,91016.5%–

479Callahan County, TXTX14,49116.5%–

480Cleveland County, ARAR7,22416.5%–

481Bradford County, PAPA59,60016.5%–

482Grant County, WIWI52,44616.5%–

483Pasco County, FLFL674,51616.5%–

484Lamoille County, VTVT26,29416.5%–

485Greene County, IAIA8,65816.5%–

486Leon County, TXTX16,89416.5%–

487Monroe County, ILIL34,84016.5%–

488Burt County, NENE6,67816.4%–

489Dixon County, NENE5,60216.4%–

490Spencer County, ININ20,06116.4%–

491Santa Rosa County, FLFL211,11516.4%–

492San Saba County, TXTX5,78716.4%–

493Carbon County, PAPA65,86816.4%–

494Robertson County, KYKY2,32516.4%–

495Suffolk County, MAMA791,89116.4%–

496Wright County, IAIA12,80116.4%–

497Rio Blanco County, COCO6,68316.4%–

498Madison County, VAVA14,23716.4%–

499Onslow County, NCNC217,17516.4%–

500Humphreys County, TNTN19,64616.4%–

SHOWING 1–500 OF 3,130

Download CSV (full list, 3,130 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which county has the highest irish share?

McPherson County, Nebraska ranks #1 with 35.6% (2010 Decennial Census).

What are the top 5 counties by irish share?

McPherson County, Nebraska, Plymouth County, Massachusetts, Silver Bow County, Montana, Norfolk County, Massachusetts, Loving County, Texas.

How many counties are in this ranking?

3,130 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 Decennial Census data.

How is irish share measured?

Share of all residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2010 Decennial Census.