RANKING · 2020 CENSUS · 500 SHOWN OF 2,998

Largest Welsh population, US counties · 2020

US counties ranked by the number of residents who are Welsh ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Maricopa County, Arizona leads at 25,098. 2,998 counties qualify in total. California carries 5 of the top 25 entries.

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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 POPULATIONVS 2010

USUnited States0.6% of US population331,449,2811,851,256–

01Maricopa County, AZAZ4,689,55825,098+0%

02Los Angeles County, CACA9,694,93424,149−15%

03King County, WAWA2,344,93919,949−4%

04Salt Lake County, UTUT1,220,91619,479−6%

05San Diego County, CACA3,282,24816,964−16%

06Franklin County, OHOH1,361,53616,135−13%

07Harris County, TXTX5,045,02614,164+10%

08Orange County, CACA3,149,50714,063−13%

09Utah County, UTUT759,85913,993+13%

10Allegheny County, PAPA1,225,03513,434−14%

11Cook County, ILIL5,194,62512,825−4%

12Luzerne County, PAPA332,12612,266−23%

13Clark County, NVNV2,407,22610,437+2%

14Tarrant County, TXTX2,248,4669,948+9%

15Lackawanna County, PAPA216,5029,879−27%

16Riverside County, CACA2,544,9169,281−7%

17Wake County, NCNC1,257,2358,518+19%

18Multnomah County, OROR795,3918,477−1%

19Sacramento County, CACA1,618,4608,342−11%

20Dallas County, TXTX2,661,3978,328−1%

21Chester County, PAPA557,1168,147−5%

22Fairfax County, VAVA1,167,8738,065−2%

23Cuyahoga County, OHOH1,232,9258,055−6%

24Montgomery County, PAPA877,6438,011−17%

25Pima County, AZAZ1,074,6857,994+3%

26Snohomish County, WAWA870,6567,890+5%

27Middlesex County, MAMA1,669,9797,529+14%

28Pierce County, WAWA946,2887,461−5%

29Travis County, TXTX1,389,6707,401+10%

30Oakland County, MIMI1,288,3377,139−20%

31Pinellas County, FLFL948,5637,039−8%

32Hillsborough County, FLFL1,574,1156,993−11%

33Hennepin County, MNMN1,284,7846,851−11%

34Summit County, OHOH538,3766,549−7%

35Contra Costa County, CACA1,170,0706,500−6%

36Davis County, UTUT381,2276,487−5%

37Bexar County, TXTX2,160,0886,444+5%

38Ada County, IDID546,1416,442+8%

39Bucks County, PAPA647,8286,191−27%

40Johnson County, KSKS636,9066,182−1%

41Santa Clara County, CACA1,914,3916,165−25%

42El Paso County, COCO757,0406,122−8%

43Jefferson County, COCO580,4516,046+8%

44Collin County, TXTX1,297,1795,907+22%

45San Bernardino County, CACA2,224,0915,893−28%

46Lancaster County, PAPA563,1595,882−2%

47Spokane County, WAWA558,3445,731+13%

48Denton County, TXTX1,069,3465,717+29%

49Mecklenburg County, NCNC1,233,3835,631−16%

50Stark County, OHOH373,7715,627−14%

51Alameda County, CACA1,636,6305,559−12%

52St. Louis County, MOMO990,9115,554−8%

53Fulton County, GAGA1,098,7915,495+42%

54Wayne County, MIMI1,769,0385,456−14%

55Philadelphia County, PAPA1,574,2815,373+24%

56Hamilton County, OHOH838,4185,359−10%

57Washington County, OROR611,7085,290−7%

58Delaware County, PAPA580,9375,275−16%

59Berks County, PAPA440,0725,267−13%

60Montgomery County, MDMD1,074,5825,240−13%

61Jackson County, MOMO732,9945,136−1%

62Baltimore County, MDMD847,6505,122−17%

63Jefferson County, KYKY795,2225,072+27%

64Duval County, FLFL1,062,9635,045+14%

65Oneida County, NYNY226,3925,018−31%

66Marion County, ININ992,1965,016−6%

67Mahoning County, OHOH224,7064,920−7%

68Brevard County, FLFL663,9824,838+23%

69Williamson County, TXTX752,8274,812+65%

70Lehigh County, PAPA384,3834,810−30%

71Anne Arundel County, MDMD603,3804,809−18%

72Northampton County, PAPA324,4114,808−20%

73Arapahoe County, COCO673,8204,799+4%

74New York County, NYNY1,664,8624,748−21%

75Orange County, FLFL1,528,0024,747−20%

76Clackamas County, OROR426,2804,561+1%

77Broward County, FLFL2,013,3174,486−8%

78Ventura County, CACA830,8514,431−13%

79York County, PAPA473,1974,407−15%

80Dane County, WIWI590,3754,385+1%

81Denver County, COCO740,6134,379−3%

82Weber County, UTUT278,1744,374+8%

83Palm Beach County, FLFL1,575,7264,358−24%

84Montgomery County, OHOH539,5984,347−9%

85Monroe County, NYNY750,5064,334−18%

86Greenville County, SCSC583,1254,330+74%

87Lane County, OROR381,5844,314−2%

88Clark County, WAWA532,1194,294−12%

89Tulsa County, OKOK698,7824,291+3%

90Cobb County, GAGA793,3454,221−4%

91Larimer County, COCO377,2924,189+28%

92Oklahoma County, OKOK822,1254,174+8%

93New Castle County, DEDE588,0264,118−28%

94Sarasota County, FLFL479,9584,097+19%

95Erie County, NYNY946,7414,047−22%

96Polk County, IAIA516,5464,019+4%

97Kings County, NYNY2,653,9633,991+53%

98Lee County, FLFL875,6073,981−16%

99Boulder County, COCO328,5603,950+21%

100Knox County, TNTN511,4533,880+3%

101Sedgwick County, KSKS538,4333,801+8%

102Sonoma County, CACA486,4443,753−12%

103Cumberland County, PAPA277,2703,751−11%

104Delaware County, OHOH242,0323,748−3%

105Burlington County, NJNJ481,4393,724+0%

106Volusia County, FLFL606,5733,695+20%

107Davidson County, TNTN745,9043,681−7%

108Pasco County, FLFL674,5163,675−9%

109Shelby County, TNTN910,2263,580+8%

110Bernalillo County, NMNM667,6013,580−19%

111Kern County, CACA927,0683,537+4%

112San Francisco County, CACA826,0793,526−7%

113Montgomery County, TXTX781,1943,526+44%

114Schuylkill County, PAPA145,0853,489−23%

115Macomb County, MIMI886,2213,474−6%

116Westmoreland County, PAPA349,3243,466−29%

117Fayette County, KYKY329,7513,454+47%

118Gwinnett County, GAGA1,018,0993,385−3%

119Jefferson County, ALAL665,7423,343+0%

120Onondaga County, NYNY466,5843,342−27%

121Polk County, FLFL874,7903,307+10%

122Kitsap County, WAWA283,3743,298+27%

123Placer County, CACA442,0813,297+22%

124Cumberland County, MEME317,2223,297+30%

125Cache County, UTUT145,0003,279+25%

126DuPage County, ILIL934,2983,261−26%

127Suffolk County, NYNY1,546,0903,178−15%

128Virginia Beach, VAVA453,7373,153−20%

129Pinal County, AZAZ539,3803,139+53%

130Washoe County, NVNV509,3863,130−10%

131Seminole County, FLFL491,8843,125−10%

132District of Columbia, DCDC693,6453,103+16%

133Greene County, MOMO309,2863,094+37%

134Manatee County, FLFL468,2003,094+3%

135Hamilton County, TNTN390,8333,068+31%

136Trumbull County, OHOH198,9723,066−40%

137Waukesha County, WIWI417,2103,065+11%

138Chesterfield County, VAVA397,1483,028+7%

139Douglas County, COCO399,3963,014−12%

140Loudoun County, VAVA449,7492,999+11%

141Weld County, COCO378,4262,955+64%

142Marion County, OROR355,7772,954+9%

143Licking County, OHOH185,5642,939−12%

144Douglas County, NENE606,4602,897−7%

145Camden County, NJNJ535,7992,873−4%

146Broome County, NYNY195,7362,849−36%

147Washington County, UTUT213,6702,799−11%

148San Mateo County, CACA743,5682,796−13%

149Washington County, PAPA210,8022,776+12%

150Williamson County, TNTN272,0612,759+39%

151Kootenai County, IDID191,8642,745+103%

152Prince William County, VAVA502,9662,743+7%

153Forsyth County, NCNC401,7182,702+9%

154Fairfield County, OHOH169,7522,699+9%

155Lorain County, OHOH323,2192,692−19%

156DeKalb County, GAGA774,3942,672−8%

157Worcester County, MAMA888,5022,666−14%

158Washtenaw County, MIMI370,2142,634−18%

159Guilford County, NCNC562,2342,595+7%

160Adams County, COCO554,6682,582+7%

161Milwaukee County, WIWI924,2162,565−17%

162Dauphin County, PAPA293,3512,557−38%

163Allen County, ININ402,3292,548+45%

164Fresno County, CACA1,035,4562,521−37%

165Kent County, MIMI675,2322,520−8%

166Santa Barbara County, CACA442,0652,512−27%

167Gloucester County, NJNJ312,6382,507−2%

168Essex County, MAMA826,6532,496−15%

169Rutherford County, TNTN386,3522,483+67%

170Charleston County, SCSC436,2002,467+14%

171Beaver County, PAPA166,0322,457+15%

172Frederick County, MDMD302,8832,442−2%

173Escambia County, FLFL333,8342,400+52%

174Madison County, ALAL433,5162,382+36%

175Butler County, OHOH400,1282,366−19%

176Yavapai County, AZAZ252,5522,364+9%

177Cleveland County, OKOK303,9732,360+16%

178San Luis Obispo County, CACA282,3672,345−14%

179Bonneville County, IDID135,7712,329+28%

180Benton County, WAWA221,7222,317−2%

181Stanislaus County, CACA557,7192,308−19%

182Thurston County, WAWA304,2612,307−23%

183Hillsborough County, NHNH433,4152,305+22%

184Hamilton County, ININ387,0362,301−16%

185Lake County, FLFL456,0682,300−7%

186Clay County, MOMO265,0322,290−4%

187Sussex County, DEDE277,1402,273−8%

188Lucas County, OHOH423,3472,262−3%

189Will County, ILIL712,2532,251−5%

190Portage County, OHOH163,4042,242−28%

191Ramsey County, MNMN541,6232,219−2%

192Harford County, MDMD266,4462,214−20%

193St. Charles County, MOMO426,4992,207−18%

194Anchorage, AKAK287,1552,203−10%

195Lake County, OHOH232,2172,199−17%

196Mercer County, PAPA107,8602,195+12%

197Ingham County, MIMI289,7092,186+11%

198Honolulu County, HIHI988,7032,183−25%

199Norfolk County, MAMA739,7492,156−14%

200Horry County, SCSC427,5512,145+10%

201Leon County, FLFL299,0482,136−20%

202Alachua County, FLFL290,0282,136+27%

203Bannock County, IDID91,5912,135+7%

204Henrico County, VAVA342,7752,128−10%

205Cherokee County, GAGA299,2732,128+7%

206Medina County, OHOH185,0252,124+9%

207Arlington County, VAVA243,9312,119+20%

208Lake County, ILIL719,3392,113−31%

209Rockingham County, NHNH324,0772,082+11%

210Buncombe County, NCNC277,4172,079−22%

211Howard County, MDMD339,1832,059−16%

212Ocean County, NJNJ673,7462,049−42%

213Clermont County, OHOH216,9772,042+40%

214Collier County, FLFL417,1312,039−8%

215Whatcom County, WAWA236,3922,034+11%

216Suffolk County, MAMA791,8912,029−6%

217Monmouth County, NJNJ651,0352,028−20%

218Deschutes County, OROR213,0722,017−3%

219Dakota County, MNMN457,7102,015−22%

220Monroe County, PAPA167,1792,002−16%

221St. Johns County, FLFL346,3282,000+48%

222Santa Cruz County, CACA258,8521,993−19%

223Lexington County, SCSC317,5881,989+55%

224San Joaquin County, CACA823,8151,981−13%

225El Dorado County, CACA192,3231,978+1%

226Erie County, PAPA265,8321,975−20%

227Nassau County, NYNY1,398,9391,961+12%

228Shelby County, ALAL238,5521,950+32%

229York County, SCSC306,8871,940+52%

230Boone County, MOMO191,7461,927+7%

231Jackson County, OROR221,7951,918−7%

232Okaloosa County, FLFL221,8101,914+21%

233Westchester County, NYNY1,015,7431,895−17%

234Lancaster County, NENE334,0491,882−12%

235Pulaski County, ARAR404,6111,878+10%

236Bell County, TXTX402,2481,877+65%

237Cambria County, PAPA128,9681,869−31%

238Butler County, PAPA200,1691,868−38%

239Warren County, OHOH257,1811,864+10%

240Johnston County, NCNC256,4481,841+155%

241Saratoga County, NYNY241,3431,831−6%

242Albany County, NYNY321,2251,813−21%

243Solano County, CACA455,3761,811−2%

244Rensselaer County, NYNY160,5101,804+31%

245Greene County, OHOH174,3221,802−9%

246Genesee County, MIMI401,0931,799−4%

247Osceola County, FLFL481,7181,797+50%

248Centre County, PAPA157,3931,796−19%

249St. Joseph County, ININ272,8611,794+30%

250Washington County, ARAR271,2131,782+73%

251Columbiana County, OHOH99,3771,780−10%

252Madison County, ILIL263,1101,776−6%

253Morris County, NJNJ524,2511,765−36%

254East Baton Rouge Parish, LALA456,1801,754+34%

255Franklin County, PAPA160,6521,742+32%

256Marin County, CACA253,6941,738−25%

257New Hanover County, NCNC245,9591,731+7%

258Fort Bend County, TXTX975,1911,728−7%

259Onslow County, NCNC217,1751,724+93%

260Plymouth County, MAMA546,8291,719−20%

261Mobile County, ALAL411,6581,718+19%

262Lubbock County, TXTX328,9061,713+21%

263Mohave County, AZAZ228,1021,710−5%

264Chesapeake, VAVA255,3321,705+14%

265Butte County, CACA209,2111,703−8%

266Baltimore, MDMD569,9971,700−14%

267Kane County, ILIL525,7571,694−36%

268Tooele County, UTUT87,4611,678+56%

269Mesa County, COCO162,8451,660+8%

270Madison County, NYNY67,1201,656+2%

271Chatham County, GAGA311,8551,651+19%

272Brazoria County, TXTX419,0801,630+32%

273Skagit County, WAWA132,9751,629+11%

274York County, MEME222,4341,612+8%

275Susquehanna County, PAPA38,2371,603−31%

276Kalamazoo County, MIMI263,7951,602−3%

277Forsyth County, GAGA282,8051,598+40%

278Lake County, ININ504,6121,592−16%

279Durham County, NCNC347,2401,590−8%

280Marion County, FLFL442,6601,585−36%

281Douglas County, OROR111,9511,564+21%

282Penobscot County, MEME157,9671,552+38%

283Niagara County, NYNY208,9121,547−13%

284Humboldt County, CACA131,6471,540+43%

285Orange County, NCNC152,4981,524+17%

286Coconino County, AZAZ144,3681,524+29%

287Lawrence County, PAPA83,9111,518−26%

288Bergen County, NJNJ977,0261,513−42%

289Middlesex County, NJNJ883,3351,506−15%

290Sumter County, FLFL157,7721,505+71%

291Paulding County, GAGA190,9961,503+182%

292Clay County, FLFL239,5931,501+17%

293El Paso County, TXTX877,8581,496+53%

294Chittenden County, VTVT169,1151,491−17%

295Galveston County, TXTX372,2071,480−11%

296Comal County, TXTX209,1661,477+103%

297Iron County, UTUT67,1411,476+21%

298Carroll County, MDMD176,6771,463−29%

299Tompkins County, NYNY104,0471,456+26%

300Tuscarawas County, OHOH92,3731,454+5%

301Canyon County, IDID275,1231,453−22%

302Mercer County, NJNJ399,2891,448−22%

303Merrimack County, NHNH158,0781,446+12%

304Linn County, IAIA232,0281,444−22%

305Alexandria, VAVA160,6621,438+2%

306St. Clair County, ILIL250,7081,435−4%

307Peoria County, ILIL178,5531,423+15%

308Brazos County, TXTX249,0881,421+60%

309Tulare County, CACA485,1461,420+18%

310Tippecanoe County, ININ190,4561,420+4%

311Wyoming County, PAPA25,7901,413−20%

312Livingston County, MIMI197,3151,399+15%

313Herkimer County, NYNY59,2191,395−31%

314Vanderburgh County, ININ181,9951,390+111%

315Sangamon County, ILIL194,1701,382−11%

316Stafford County, VAVA170,8031,381+21%

317Washington County, MNMN286,8951,378+24%

318Monterey County, CACA433,7291,376−35%

319Richland County, SCSC434,9561,375−14%

320Shawnee County, KSKS178,6071,373−16%

321Wood County, OHOH134,1761,370+2%

322Kanawha County, WVWV172,3811,367−17%

323St. Louis, MOMO278,1441,356+7%

324Berkeley County, WVWV139,5221,355+53%

325Cecil County, MDMD107,1311,353−18%

326Shasta County, CACA181,6481,352−21%

327Jasper County, MOMO127,4281,339+68%

328Hays County, TXTX304,3901,336+37%

329Columbia County, PAPA66,1931,333−29%

330Douglas County, KSKS120,9201,331+7%

331Monongalia County, WVWV107,9911,330−9%

332Hernando County, FLFL221,7011,325−5%

333Orleans Parish, LALA362,1541,324+79%

334Brunswick County, NCNC174,7021,321+26%

335Winnebago County, ILIL283,6741,321−5%

336Queens County, NYNY2,358,1821,315−21%

337McLennan County, TXTX272,0201,307+15%

338Jefferson County, MOMO233,1321,302+7%

339Santa Fe County, NMNM156,9071,302+10%

340Union County, NCNC267,6741,301+6%

341Allen County, OHOH100,8811,291−35%

342Beaufort County, SCSC204,4331,288−10%

343Jackson County, OHOH32,8171,287−12%

344Montgomery County, TNTN249,9351,275+28%

345Monroe County, ININ143,3451,274−0%

346Kenton County, KYKY175,7791,273+7%

347Sarpy County, NENE208,3031,269−11%

348Hawaii County, HIHI210,0431,265+58%

349Strafford County, NHNH135,0431,262+43%

350Box Elder County, UTUT65,3201,255+11%

351McHenry County, ILIL317,7511,249−16%

352Hampshire County, MAMA164,0651,248+20%

353Kent County, DEDE194,7861,247+1%

354Bay County, FLFL204,4791,245+28%

355Ottawa County, MIMI308,4591,242+6%

356Miami-Dade County, FLFL2,802,0291,232−31%

357St. Lucie County, FLFL402,4491,226−12%

358Smith County, TXTX252,5491,224+17%

359Natrona County, WYWY80,5261,224+34%

360Champaign County, ILIL209,9721,222+4%

361Columbia County, GAGA169,1891,221+71%

362Washington County, TNTN141,1991,221+89%

363Clark County, OHOH135,3401,220−14%

364Rutland County, VTVT59,6531,214−33%

365Johnson County, IAIA160,0441,208+15%

366Richmond, VAVA237,2571,198−14%

367Northumberland County, PAPA89,9201,197−31%

368Cabarrus County, NCNC249,7251,194+34%

369Barnstable County, MAMA233,5391,193−26%

370Oswego County, NYNY118,5691,193−3%

371Indiana County, PAPA82,8781,192−18%

372Linn County, OROR132,8431,191+7%

373Lycoming County, PAPA112,5871,190−27%

374Johnson County, ININ174,2621,181+39%

375Richland County, OHOH124,8931,179−11%

376Carbon County, PAPA65,8681,177−19%

377Cumberland County, NCNC338,4731,169−14%

378Gallatin County, MTMT128,7401,169−16%

379Boone County, KYKY145,3161,164+22%

380Yellowstone County, MTMT172,6921,157−23%

381Ulster County, NYNY183,3301,155+3%

382Somerset County, PAPA72,0041,154+0%

383Racine County, WIWI198,9191,152+35%

384Santa Rosa County, FLFL211,1151,151−8%

385Blair County, PAPA119,5411,142−24%

386Spartanburg County, SCSC380,8571,133+16%

387Charlotte County, FLFL217,2121,132−19%

388Iredell County, NCNC211,7981,132+16%

389Benton County, OROR97,7281,129+17%

390Providence County, RIRI678,1791,128−20%

391Saginaw County, MIMI187,6881,124+61%

392Prince George's County, MDMD970,3741,119−40%

393Atlantic County, NJNJ278,6571,114−34%

394Norfolk, VAVA231,0131,114−20%

395Henderson County, NCNC122,3751,113+5%

396Baldwin County, ALAL267,7611,108+25%

397Washington County, MDMD157,7311,107+11%

398Cochise County, AZAZ126,3321,107+2%

399Anderson County, TNTN82,0661,107+90%

400Benton County, ARAR332,5541,104−38%

401Vigo County, ININ106,5121,102+2%

402Bedford County, VAVA83,0591,099+154%

403Indian River County, FLFL172,7991,096−10%

404Allegany County, MDMD66,8481,095−26%

405Chemung County, NYNY80,4151,094−22%

406Washington County, NYNY59,3531,094−5%

407Dutchess County, NYNY300,7081,086−24%

408Miami County, OHOH112,6341,076−14%

409Lewis County, WAWA88,0621,068+22%

410Albemarle County, VAVA118,3561,066−19%

411Island County, WAWA85,6571,064−17%

412Essex County, NJNJ896,3791,064−23%

413Nueces County, TXTX352,9921,063+41%

414St. Tammany Parish, LALA279,1081,062−24%

415Ouachita Parish, LALA158,5421,060+227%

416Anoka County, MNMN381,6051,059−4%

417Bradford County, PAPA59,6001,058−32%

418Lebanon County, PAPA146,3801,058−1%

419Lewis and Clark County, MTMT75,3311,053+67%

420Tioga County, PAPA40,5021,044−1%

421Harrison County, MSMS217,1361,042+10%

422Twin Falls County, IDID97,5391,042+104%

423Berkeley County, SCSC274,6661,040−19%

424Spotsylvania County, VAVA155,3881,039+4%

425Schenectady County, NYNY162,5811,036+5%

426Moore County, NCNC110,6191,033+1%

427Hanover County, VAVA116,4231,031+7%

428Orange County, NYNY417,6691,030−34%

429Wayne County, PAPA51,7031,028−25%

430Bristol County, MAMA593,6401,015−25%

431Tioga County, NYNY47,4531,010−18%

432Chautauqua County, NYNY124,1261,004−3%

433Elkhart County, ININ208,774999−2%

434Geauga County, OHOH95,676999−15%

435Rock County, WIWI166,472995−5%

436Hendricks County, ININ193,510993+1%

437Cabell County, WVWV91,183991+17%

438Warren County, NJNJ112,953990−21%

439Cape May County, NJNJ93,390989−4%

440Newport News, VAVA183,230987−11%

441Wicomico County, MDMD106,899985+32%

442Missoula County, MTMT123,513984+12%

443Warren County, KYKY149,375984+42%

444Martin County, FLFL166,272978−12%

445Wayne County, OHOH116,758973−7%

446Berrien County, MIMI152,444972+10%

447Tazewell County, ILIL130,049965+74%

448St. Clair County, ALAL98,206962+277%

449Cowlitz County, WAWA114,885960−14%

450McLean County, ILIL171,419960−23%

451Clearfield County, PAPA78,100960−6%

452Porter County, ININ176,049952−28%

453Sebastian County, ARAR130,641952+66%

454Somerset County, NJNJ356,486952−41%

455Fairbanks North Star, AKAK93,972952+1%

456Highlands County, FLFL111,122949+32%

457Yakima County, WAWA259,185947+4%

458Clallam County, WAWA78,202945−14%

459Scioto County, OHOH71,365944−9%

460Pennington County, SDSD116,792936+59%

461Rock Island County, ILIL141,869931+47%

462Winnebago County, WIWI174,218928−34%

463Alamance County, NCNC186,177928+103%

464Aiken County, SCSC181,515928+3%

465Ontario County, NYNY113,130926−25%

466Ashtabula County, OHOH96,713926−16%

467Delaware County, ININ113,106924+24%

468Crawford County, PAPA81,792923−31%

469Saline County, KSKS53,377923+237%

470Macon County, ILIL99,300922+89%

471Sumner County, TNTN215,538919−3%

472Cascade County, MTMT85,029919+38%

473DeSoto County, MSMS197,918917+31%

474Rowan County, NCNC155,096911+102%

475Caddo Parish, LALA224,226906−15%

476Yolo County, CACA224,410900−36%

477Matanuska-Susitna, AKAK118,666894−8%

478Hampden County, MAMA464,338892−27%

479Pueblo County, COCO169,277892−14%

480Muskingum County, OHOH87,014889+1%

481Napa County, CACA132,949887−22%

482Yamhill County, OROR110,024887−26%

483Canadian County, OKOK187,189885+33%

484Anderson County, SCSC219,930885−1%

485Union County, NJNJ601,863881−27%

486Fayette County, PAPA123,021880−44%

487Chenango County, NYNY45,715878−13%

488Harrison County, WVWV64,221877+42%

489Cass County, MOMO115,859871+7%

490Clarke County, GAGA129,921870−14%

491Charles County, MDMD176,593870+10%

492Merced County, CACA297,260867+66%

493Frederick County, VAVA99,955861+24%

494Columbia County, OROR54,091860+172%

495Johnson County, TXTX218,048859+25%

496Guadalupe County, TXTX201,111857−0%

497Madison County, IDID55,172855−25%

498Clark County, ININ130,451855+95%

499Saline County, ARAR133,288848+60%

500Citrus County, FLFL171,666847−25%

SHOWING 1–500 OF 2,998

Download CSV (full list, 2,998 rows)

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

Frequently asked

Which county has the highest welsh population?

Maricopa County, Arizona ranks #1 with 25,098 (2020 Decennial Census).

What are the top 5 counties by welsh population?

Maricopa County, Arizona, Los Angeles County, California, King County, Washington, Salt Lake County, Utah, San Diego County, California.

How many counties are in this ranking?

2,998 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is welsh population measured?

Number of residents who are Welsh ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2020 Decennial Census.