RANKING · 2010 CENSUS · 500 SHOWN OF 2,972

Highest Welsh population share, US counties · 2010

US counties ranked by the share of all residents who are Welsh ancestry (2010 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. Oneida County, Idaho leads at 15.1%. 2,972 counties qualify in total. Pennsylvania carries 6 of the top 25 entries.

Welsh Americans: full group profile →

All statesAll rankings

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

RANKPLACESTATEPOPWELSH SHAREVS –

USUnited States308,745,5380.6%–

01Oneida County, IDID5,08515.1%–

02Lackawanna County, PAPA216,5026.3%–

03Wyoming County, PAPA25,7906.2%–

04Mineral County, COCO9105.4%–

05Susquehanna County, PAPA38,2375.4%–

06Luzerne County, PAPA332,1265.0%–

07San Juan County, COCO8134.7%–

08Butte County, IDID2,7834.4%–

09Jackson County, OHOH32,8174.4%–

10Logan County, KSKS2,6614.1%–

11Garfield County, UTUT5,2563.9%–

12Valley County, IDID12,8313.5%–

13Skagway, AKAK1,1043.3%–

14Elliott County, KYKY7,2653.3%–

15Herkimer County, NYNY59,2193.2%–

16Madison County, IDID55,1723.1%–

17Oneida County, NYNY226,3923.1%–

18Grant County, OROR7,0753.1%–

19Uinta County, WYWY20,7283.1%–

20Schuylkill County, PAPA145,0853.1%–

21Beaver County, UTUT7,3013.0%–

22Scotland County, MOMO4,7962.9%–

23Craig County, VAVA4,8002.9%–

24Rutland County, VTVT59,6532.9%–

25Montour County, PAPA17,8682.9%–

26Wheatland County, MTMT2,1002.9%–

27Grant County, NENE5612.9%–

28Clay County, KSKS7,9902.9%–

29Columbia County, PAPA66,1932.8%–

30Denali, AKAK1,6162.8%–

31Morrow County, OHOH36,3052.8%–

32Trinity County, CACA15,7202.8%–

33Wheeler County, OROR1,4722.8%–

34Iron County, UTUT67,1412.8%–

35Adams County, IDID5,0132.6%–

36Gallia County, OHOH29,0722.6%–

37Wayne County, PAPA51,7032.6%–

38Franklin County, IDID15,8892.6%–

39Klickitat County, WAWA24,3312.6%–

40Utah County, UTUT759,8592.6%–

41Custer County, IDID4,6362.5%–

42Tioga County, PAPA40,5022.5%–

43Beaverhead County, MTMT10,0432.5%–

44Lake County, COCO7,5522.5%–

45Pitkin County, COCO16,6252.5%–

46Bradford County, PAPA59,6002.5%–

47Bannock County, IDID91,5912.5%–

48Sublette County, WYWY8,9292.5%–

49Cache County, UTUT145,0002.5%–

50Eureka County, NVNV1,8672.4%–

51Hoonah-Angoon Census Area, AKAK2,2712.4%–

52Wasatch County, UTUT38,5142.4%–

53Tioga County, NYNY47,4532.4%–

54Trumbull County, OHOH198,9722.4%–

55Washington County, UTUT213,6702.4%–

56Sitka, AKAK8,3192.3%–

57Box Elder County, UTUT65,3202.3%–

58Davis County, UTUT381,2272.3%–

59Decatur County, IAIA7,6552.3%–

60Delaware County, OHOH242,0322.3%–

61Power County, IDID8,2462.3%–

62Clatsop County, OROR40,9262.3%–

63Carbon County, UTUT20,6802.3%–

64Coffey County, KSKS8,4672.3%–

65Summit County, UTUT43,1412.2%–

66Montgomery County, IAIA10,0022.2%–

67Lyon County, KSKS32,2662.2%–

68Powell County, MTMT7,1572.2%–

69Lawrence County, PAPA83,9112.2%–

70Carbon County, PAPA65,8682.2%–

71Emery County, UTUT10,1772.2%–

72Madison County, NYNY67,1202.2%–

73Broome County, NYNY195,7362.2%–

74San Juan County, UTUT14,5422.2%–

75Piute County, UTUT1,5092.2%–

76Churchill County, NVNV25,8512.2%–

77Union County, OHOH73,4462.2%–

78Lemhi County, IDID8,4742.2%–

79Mahoning County, OHOH224,7062.2%–

80Latah County, IDID41,8422.2%–

81Lincoln County, WAWA11,9822.2%–

82Custer County, NENE10,5002.1%–

83San Juan County, WAWA18,5772.1%–

84Clark County, IDID7832.1%–

85Hardin County, OHOH30,0722.1%–

86Salt Lake County, UTUT1,220,9162.1%–

87Lincoln County, NVNV4,3202.1%–

88Juab County, UTUT13,5672.1%–

89Lexington, VAVA7,7692.1%–

90Petersburg, AKAK3,3942.1%–

91Northampton County, PAPA324,4112.0%–

92Licking County, OHOH185,5642.0%–

93Covington County, MSMS17,8982.0%–

94Edmunds County, SDSD4,0222.0%–

95Caribou County, IDID7,2522.0%–

96Lehigh County, PAPA384,3832.0%–

97Polk County, TNTN18,5922.0%–

98Wayne County, UTUT2,5872.0%–

99Allegany County, MDMD66,8482.0%–

100Chenango County, NYNY45,7152.0%–

101Portage County, OHOH163,4041.9%–

102Tooele County, UTUT87,4611.9%–

103Chase County, KSKS2,5721.9%–

104Lake County, OROR8,1871.9%–

105Buena Vista, VAVA6,6721.9%–

106Boone County, IAIA26,7991.9%–

107Franklin County, TXTX10,9941.9%–

108Falls Church, VAVA15,1591.9%–

109Meigs County, OHOH21,5871.9%–

110Keya Paha County, NENE7921.9%–

111Big Horn County, WYWY12,0241.9%–

112Louisa County, IAIA10,4161.9%–

113Rich County, UTUT2,6871.9%–

114Cambria County, PAPA128,9681.9%–

115Cotton County, OKOK5,4321.9%–

116Ravalli County, MTMT48,5821.9%–

117Allen County, OHOH100,8811.9%–

118Shoshone County, IDID14,1301.9%–

119Brooke County, WVWV21,1421.9%–

120Rio Blanco County, COCO6,6831.8%–

121Northumberland County, PAPA89,9201.8%–

122Hinsdale County, COCO7531.8%–

123Washington County, NYNY59,3531.8%–

124Washington County, ILIL13,5641.8%–

125Columbiana County, OHOH99,3771.8%–

126Weber County, UTUT278,1741.8%–

127Bonneville County, IDID135,7711.8%–

128Rappahannock County, VAVA7,4391.8%–

129Cumberland County, PAPA277,2701.8%–

130Wayne County, IAIA6,7381.8%–

131Clinton County, KYKY9,1391.8%–

132Carter County, MTMT1,3831.8%–

133Otsego County, NYNY60,5891.8%–

134Catron County, NMNM3,8271.8%–

135Waynesboro, VAVA23,9511.8%–

136Park County, COCO18,3141.8%–

137Converse County, WYWY13,8241.8%–

138La Paz County, AZAZ16,7111.8%–

139Lawrence County, SDSD29,4591.8%–

140Stark County, OHOH373,7711.7%–

141Chester County, PAPA557,1161.7%–

142Marshall County, WVWV29,1591.7%–

143Duchesne County, UTUT20,8561.7%–

144Athens County, OHOH63,1971.7%–

145Williamsburg, VAVA15,8611.7%–

146Fairfield County, OHOH169,7521.7%–

147Mineral County, MTMT5,1851.7%–

148Boyd County, NENE1,6741.7%–

149Coal County, OKOK5,4361.7%–

150Guernsey County, OHOH38,3791.7%–

151Asotin County, WAWA22,5451.7%–

152Tyler County, WVWV7,8811.7%–

153Hamilton County, TXTX8,6801.7%–

154Clay County, IAIA16,2021.7%–

155Pleasants County, WVWV7,3381.7%–

156Broomfield County, COCO79,1741.7%–

157Blaine County, NENE4581.7%–

158Mercer County, PAPA107,8601.7%–

159Butler County, PAPA200,1691.7%–

160Morris County, TXTX12,1331.7%–

161Carson City, NVNV58,5711.7%–

162Albany County, WYWY38,5581.6%–

163Cecil County, MDMD107,1311.6%–

164Indiana County, PAPA82,8781.6%–

165Fairfax, VAVA26,7721.6%–

166Island County, WAWA85,6571.6%–

167Jefferson County, OHOH63,5971.6%–

168Madison County, IAIA17,2701.6%–

169Jefferson County, IDID35,2971.6%–

170Pershing County, NVNV6,4211.6%–

171Hocking County, OHOH27,5121.6%–

172St. Clair County, MOMO9,9761.6%–

173Franklin County, OHOH1,361,5361.6%–

174Rabun County, GAGA17,7641.6%–

175Chemung County, NYNY80,4151.6%–

176Stanley County, SDSD3,0181.6%–

177Routt County, COCO25,3291.6%–

178Addison County, VTVT38,0481.6%–

179Union County, PAPA42,3131.6%–

180Monongalia County, WVWV107,9911.6%–

181Moore County, TNTN6,9201.6%–

182Gallatin County, MTMT128,7401.6%–

183Avery County, NCNC18,1101.6%–

184Bear Lake County, IDID6,7271.6%–

185Sanpete County, UTUT31,4531.6%–

186San Miguel County, COCO7,7531.6%–

187Hot Springs County, WYWY4,6001.6%–

188Elbert County, COCO30,5341.6%–

189Pondera County, MTMT6,0721.6%–

190Dauphin County, PAPA293,3511.6%–

191Ada County, IDID546,1411.6%–

192Young County, TXTX18,1541.6%–

193Gem County, IDID21,7731.5%–

194Summit County, COCO31,5171.5%–

195Clallam County, WAWA78,2021.5%–

196Stone County, MOMO32,5031.5%–

197Osage County, KSKS15,6931.5%–

198Alpine County, CACA1,0431.5%–

199Belmont County, OHOH64,4341.5%–

200Marion County, OHOH65,1151.5%–

201Wapello County, IAIA35,2101.5%–

202Fremont County, IDID14,2081.5%–

203Monroe County, IAIA7,4061.5%–

204Hardeman County, TXTX3,2921.5%–

205Piscataquis County, MEME17,4091.5%–

206Buffalo County, SDSD1,8021.5%–

207Warren County, NYNY65,0201.5%–

208Tuscarawas County, OHOH92,3731.5%–

209Morgan County, UTUT13,3831.5%–

210Crawford County, PAPA81,7921.5%–

211Nez Perce County, IDID42,9051.5%–

212Jefferson County, WAWA33,9701.5%–

213Berks County, PAPA440,0721.5%–

214Nevada County, CACA101,9111.5%–

215Harney County, OROR7,3801.5%–

216Somerset County, PAPA72,0041.5%–

217Bingham County, IDID51,1531.5%–

218Skamania County, WAWA12,6691.5%–

219Ferry County, WAWA7,5171.5%–

220Centre County, PAPA157,3931.5%–

221Currituck County, NCNC33,1581.5%–

222Esmeralda County, NVNV7291.5%–

223Wabaunsee County, KSKS7,0181.5%–

224Macon County, MOMO15,1901.5%–

225Van Wert County, OHOH29,0131.5%–

226Granite County, MTMT3,6581.4%–

227Sevier County, UTUT22,8271.4%–

228Iowa County, IAIA16,5041.4%–

229Union County, IAIA11,8291.4%–

230Orange County, VTVT30,0021.4%–

231Kane County, UTUT8,5971.4%–

232Jackson County, COCO1,2111.4%–

233Huntingdon County, PAPA43,0011.4%–

234Kittitas County, WAWA48,8031.4%–

235Venango County, PAPA49,3461.4%–

236Lincoln County, MTMT22,3281.4%–

237Sherman County, OROR2,0511.4%–

238Gooding County, IDID16,4461.4%–

239Rawlins County, KSKS2,4311.4%–

240Blue Earth County, MNMN70,6341.4%–

241Los Alamos County, NMNM19,4071.4%–

242Lancaster County, VAVA10,9951.4%–

243Sweetwater County, WYWY41,2671.4%–

244Monroe County, PAPA167,1791.4%–

245Jefferson County, MTMT13,3291.4%–

246Benton County, WAWA221,7221.4%–

247Chariton County, MOMO7,3771.4%–

248Rowan County, KYKY24,4761.4%–

249Arthur County, NENE3961.4%–

250Chouteau County, MTMT5,8651.4%–

251Cameron County, PAPA4,2111.4%–

252Hancock County, OHOH75,0341.4%–

253Lyon County, NVNV65,0881.4%–

254Lycoming County, PAPA112,5871.4%–

255Lewis County, NYNY26,4791.4%–

256Guthrie County, IAIA10,7821.4%–

257Sullivan County, PAPA5,8561.4%–

258Modoc County, CACA8,4261.4%–

259Huerfano County, COCO7,0111.4%–

260Brown County, KSKS9,1041.4%–

261Linn County, MOMO11,8151.4%–

262Bedford County, PAPA47,4801.4%–

263Oglethorpe County, GAGA16,4151.4%–

264Jay County, ININ20,1181.4%–

265Silver Bow County, MTMT36,1181.4%–

266Carbon County, WYWY14,0131.4%–

267Jasper County, IAIA38,1531.4%–

268Albemarle County, VAVA118,3561.4%–

269Bucks County, PAPA647,8281.4%–

270Steuben County, NYNY91,8551.3%–

271Perkins County, NENE2,8491.3%–

272Deschutes County, OROR213,0721.3%–

273Linn County, KSKS9,9501.3%–

274Kenai Peninsula, AKAK61,9511.3%–

275Hitchcock County, NENE2,4671.3%–

276Douglas County, NVNV50,1111.3%–

277Garrett County, MDMD28,3701.3%–

278Wallowa County, OROR7,5951.3%–

279Westmoreland County, PAPA349,3241.3%–

280Perry County, PAPA46,8061.3%–

281Knox County, OHOH64,0021.3%–

282Waldo County, MEME40,6931.3%–

283Pickaway County, OHOH62,9781.3%–

284Scioto County, OHOH71,3651.3%–

285Logan County, NENE6691.3%–

286Coshocton County, OHOH37,1881.3%–

287Lincoln County, COCO5,6451.3%–

288Jefferson County, PAPA43,2551.3%–

289Dickens County, TXTX1,6921.3%–

290Carbon County, MTMT11,4661.3%–

291Nye County, NVNV57,3361.3%–

292Boundary County, IDID13,9971.3%–

293Delaware County, NYNY44,3051.3%–

294Goshen County, WYWY12,6401.3%–

295Jasper County, GAGA17,6321.3%–

296Pawnee County, OKOK16,0291.3%–

297Clay County, ININ26,4101.3%–

298Cheyenne County, KSKS2,6041.3%–

299Summit County, OHOH538,3761.3%–

300Greenwood County, KSKS5,8261.3%–

301Snyder County, PAPA39,6551.3%–

302Sussex County, DEDE277,1401.3%–

303Miner County, SDSD2,2811.3%–

304Allegheny County, PAPA1,225,0351.3%–

305Millard County, UTUT14,0571.3%–

306Houston County, TNTN8,4791.3%–

307Skagit County, WAWA132,9751.3%–

308Custer County, SDSD9,4311.3%–

309Bennington County, VTVT36,6301.3%–

310Lane County, OROR381,5841.3%–

311Vermillion County, ININ15,4881.3%–

312Bledsoe County, TNTN15,9201.3%–

313Douglas County, COCO399,3961.3%–

314Geauga County, OHOH95,6761.3%–

315Blackford County, ININ11,7301.3%–

316Calaveras County, CACA46,6051.2%–

317Parke County, ININ16,6421.2%–

318Pike County, PAPA62,8081.2%–

319Saline County, ILIL22,7721.2%–

320Beaver County, PAPA166,0321.2%–

321Salem, VAVA25,8161.2%–

322Yancey County, NCNC19,0841.2%–

323Clearfield County, PAPA78,1001.2%–

324Adair County, MOMO25,6841.2%–

325Clear Creek County, COCO8,9941.2%–

326Natrona County, WYWY80,5261.2%–

327Elko County, NVNV54,8151.2%–

328Deer Lodge County, MTMT9,7091.2%–

329Schuyler County, MOMO4,1401.2%–

330Champaign County, OHOH38,8201.2%–

331Kearny County, KSKS3,8881.2%–

332Greene County, OHOH174,3221.2%–

333Lincoln County, NMNM19,8441.2%–

334Yamhill County, OROR110,0241.2%–

335Carroll County, MDMD176,6771.2%–

336Thurston County, WAWA304,2611.2%–

337Montgomery County, PAPA877,6431.2%–

338Ouray County, COCO5,2651.2%–

339Oxford County, MEME60,3461.2%–

340Miami County, OHOH112,6341.2%–

341Clackamas County, OROR426,2801.2%–

342Curry County, OROR22,6211.2%–

343Washington County, OHOH58,3891.2%–

344Keokuk County, IAIA9,7971.2%–

345Mendocino County, CACA88,1221.2%–

346Chaffee County, COCO20,8311.2%–

347Radford, VAVA17,2431.2%–

348Boone County, NENE5,3551.2%–

349Howard County, MOMO10,1801.2%–

350Douglas County, OROR111,9511.2%–

351York County, PAPA473,1971.2%–

352Polk County, OROR90,0371.2%–

353Sedgwick County, COCO2,2471.2%–

354Nicollet County, MNMN34,2731.2%–

355Jackson County, TXTX15,3931.2%–

356Washington County, PAPA210,8021.2%–

357Meigs County, TNTN14,1861.2%–

358Multnomah County, OROR795,3911.2%–

359Musselshell County, MTMT5,5821.2%–

360Alamosa County, COCO16,6881.2%–

361Potter County, PAPA15,8971.2%–

362Morris County, KSKS5,3481.2%–

363Pacific County, WAWA24,3571.2%–

364Adams County, OHOH27,8651.2%–

365Iowa County, WIWI23,9511.2%–

366Moore County, NCNC110,6191.2%–

367Appanoose County, IAIA12,0771.2%–

368New Kent County, VAVA28,0221.2%–

369Blair County, PAPA119,5411.2%–

370Lafayette County, MOMO33,5311.2%–

371Hardy County, WVWV14,3371.2%–

372Lincoln County, OROR50,6361.2%–

373Fayette County, WVWV38,1651.2%–

374Allegany County, NYNY46,8001.2%–

375Blaine County, IDID25,5171.2%–

376Logan County, COCO20,6541.2%–

377White Pine County, NVNV8,6611.2%–

378Johnson County, KSKS636,9061.2%–

379La Plata County, COCO56,8981.2%–

380Terrell County, TXTX7021.2%–

381Queen Anne's County, MDMD54,4481.2%–

382Greene County, ININ31,1651.2%–

383Wasco County, OROR26,3101.2%–

384Clark County, WAWA532,1191.2%–

385Faulk County, SDSD2,1781.2%–

386Washakie County, WYWY7,5971.2%–

387Cheboygan County, MIMI25,7931.2%–

388Deuel County, NENE1,8621.2%–

389Schoharie County, NYNY30,1761.2%–

390Lewis County, WAWA88,0621.2%–

391Hayes County, NENE8211.2%–

392Whitman County, WAWA48,5121.2%–

393Grand County, COCO16,4961.2%–

394Lancaster County, PAPA563,1591.2%–

395Montezuma County, COCO26,6781.2%–

396Tillamook County, OROR27,3841.2%–

397Kent County, TXTX6741.2%–

398Windham County, VTVT45,2041.2%–

399Payette County, IDID27,8241.2%–

400Calvert County, MDMD94,4841.2%–

401Hamilton County, NYNY5,0061.2%–

402Lake County, OHOH232,2171.2%–

403Dare County, NCNC38,2451.2%–

404Ontario County, NYNY113,1301.2%–

405Matanuska-Susitna, AKAK118,6661.2%–

406Chittenden County, VTVT169,1151.2%–

407Johnson County, WYWY8,9081.2%–

408Preston County, WVWV34,0041.2%–

409Nelson County, VAVA14,9201.2%–

410Tompkins County, NYNY104,0471.2%–

411Putnam County, MOMO4,5461.2%–

412Warren County, NJNJ112,9531.1%–

413Knox County, MEME41,1171.1%–

414Lyon County, KYKY9,1231.1%–

415Wyoming County, NYNY39,7411.1%–

416Benton County, OROR97,7281.1%–

417Mills County, TXTX4,5801.1%–

418Boone County, MOMO191,7461.1%–

419Custer County, MTMT12,0341.1%–

420Buncombe County, NCNC277,4171.1%–

421Medina County, OHOH185,0251.1%–

422Carroll County, OHOH26,4751.1%–

423Henry County, IAIA19,3491.1%–

424Pottawattamie County, IAIA92,9961.1%–

425Williamson County, TNTN272,0611.1%–

426Meagher County, MTMT2,1371.1%–

427Livingston County, MOMO14,7081.1%–

428Douglas County, KSKS120,9201.1%–

429Delaware County, PAPA580,9371.1%–

430Harford County, MDMD266,4461.1%–

431Furnas County, NENE4,5241.1%–

432Owyhee County, IDID12,6611.1%–

433Montgomery County, VAVA98,4341.1%–

434Lamar County, GAGA20,9411.1%–

435Barry County, MOMO36,2001.1%–

436Laramie County, WYWY102,9381.1%–

437Fayette County, PAPA123,0211.1%–

438Hancock County, WVWV27,7291.1%–

439Erie County, OHOH73,2961.1%–

440Windsor County, VTVT57,3121.1%–

441Oldham County, KYKY70,9861.1%–

442Wibaux County, MTMT8851.1%–

443Talbot County, MDMD38,2381.1%–

444Boulder County, COCO328,5601.1%–

445Mason County, WAWA71,1651.1%–

446Clay County, NCNC12,2391.1%–

447Kosciusko County, ININ80,8921.1%–

448Larimer County, COCO377,2921.1%–

449Ross County, OHOH76,4291.1%–

450Conejos County, COCO7,5291.1%–

451Washington County, IAIA22,6671.1%–

452Lincoln County, KSKS2,8611.1%–

453Juneau, AKAK31,6091.1%–

454Garden County, NENE1,8041.1%–

455Kit Carson County, COCO7,0691.1%–

456Jones County, SDSD9131.1%–

457Lorain County, OHOH323,2191.1%–

458Camden County, MOMO44,0471.1%–

459Charlottesville, VAVA44,3881.1%–

460El Paso County, COCO757,0401.1%–

461Perry County, OHOH35,9181.1%–

462Griggs County, NDND2,2391.1%–

463Anne Arundel County, MDMD603,3801.1%–

464Clay County, MOMO265,0321.1%–

465Swisher County, TXTX6,7031.1%–

466James City County, VAVA83,3261.1%–

467Lake County, MNMN10,7461.1%–

468King County, WAWA2,344,9391.1%–

469Watauga County, NCNC54,7861.1%–

470Warren County, PAPA37,0381.1%–

471Inyo County, CACA18,1581.1%–

472Cowlitz County, WAWA114,8851.1%–

473Washington County, OROR611,7081.1%–

474Schuyler County, NYNY16,9241.1%–

475Kent County, MDMD19,5651.1%–

476Platte County, MOMO114,4001.1%–

477Spokane County, WAWA558,3441.1%–

478Flathead County, MTMT115,4291.1%–

479Gage County, NENE21,7111.1%–

480Spencer County, KYKY20,9981.1%–

481Umatilla County, OROR81,1191.1%–

482Doddridge County, WVWV7,6341.1%–

483McIntosh County, OKOK19,7581.1%–

484Madison County, OHOH46,9851.1%–

485Prince Edward County, VAVA22,3911.1%–

486Hardin County, ILIL3,5881.1%–

487Gunnison County, COCO17,4391.1%–

488El Dorado County, CACA192,3231.1%–

489Mathews County, VAVA8,5291.1%–

490Franklin County, KSKS26,2991.1%–

491Edwards County, TXTX1,3701.1%–

492Frederick County, MDMD302,8831.1%–

493Mesa County, COCO162,8451.1%–

494Ashtabula County, OHOH96,7131.1%–

495Colonial Heights, VAVA18,7381.1%–

496Snohomish County, WAWA870,6561.1%–

497Dillingham Census Area, AKAK4,4831.1%–

498Sweet Grass County, MTMT3,7621.1%–

499Navajo County, AZAZ109,9461.1%–

500Wood County, OHOH134,1761.1%–

SHOWING 1–500 OF 2,972

Download CSV (full list, 2,972 rows)

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

Frequently asked

Which county has the highest welsh share?

Oneida County, Idaho ranks #1 with 15.1% (2010 Decennial Census).

What are the top 5 counties by welsh share?

Oneida County, Idaho, Lackawanna County, Pennsylvania, Wyoming County, Pennsylvania, Mineral County, Colorado, Susquehanna County, Pennsylvania.

How many counties are in this ranking?

2,972 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 Decennial Census data.

How is welsh share measured?

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