RANKING · 2024 ACS · 500 SHOWN OF 3,090

Largest Scotch-Irish population, US counties

US counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Maricopa County, Arizona leads at 26,736. 3,090 counties qualify in total. Texas carries 7 of the top 25 entries.

Scotch-Irish Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH POPULATIONVS 2010

USUnited States0.8% of US population334,922,4992,522,548–

01Maricopa County, AZAZ4,689,55826,736−53%

02Los Angeles County, CACA9,694,93426,263−60%

03Harris County, TXTX5,045,02624,032−50%

04King County, WAWA2,344,93920,537−52%

05San Diego County, CACA3,282,24818,987−59%

06Wake County, NCNC1,257,23518,490−36%

07Mecklenburg County, NCNC1,233,38318,181−49%

08Allegheny County, PAPA1,225,03516,679−45%

09Dallas County, TXTX2,661,39716,387−47%

10Tarrant County, TXTX2,248,46615,878−54%

11Orange County, CACA3,149,50715,259−59%

12Knox County, TNTN511,45313,770−32%

13Cook County, ILIL5,194,62513,501−59%

14Travis County, TXTX1,389,67013,405−42%

15Greenville County, SCSC583,12512,637−20%

16Bexar County, TXTX2,160,08812,575−40%

17Davidson County, TNTN745,90411,165−42%

18Franklin County, OHOH1,361,53610,982−46%

19Collin County, TXTX1,297,17910,621−30%

20Denton County, TXTX1,069,34610,523−31%

21Middlesex County, MAMA1,669,97910,375−65%

22Sacramento County, CACA1,618,46010,142−53%

23Fulton County, GAGA1,098,7919,903−35%

24Fairfax County, VAVA1,167,8739,734−58%

25Pima County, AZAZ1,074,6859,449−47%

26Riverside County, CACA2,544,9169,434−62%

27Pinellas County, FLFL948,5639,264−47%

28Salt Lake County, UTUT1,220,9168,860−29%

29Wayne County, MIMI1,769,0388,849−61%

30Oakland County, MIMI1,288,3378,812−59%

31Williamson County, TXTX752,8278,752−10%

32York County, SCSC306,8878,637−33%

33Duval County, FLFL1,062,9638,348−53%

34Guilford County, NCNC562,2348,344−48%

35Multnomah County, OROR795,3918,325−53%

36Clark County, NVNV2,407,2268,305−60%

37Cobb County, GAGA793,3458,182−48%

38Pierce County, WAWA946,2888,159−56%

39Hillsborough County, FLFL1,574,1158,135−58%

40Jefferson County, ALAL665,7427,978−55%

41El Paso County, COCO757,0407,953−45%

42Snohomish County, WAWA870,6567,829−58%

43Oklahoma County, OKOK822,1257,811−43%

44Shelby County, TNTN910,2267,284−63%

45Montgomery County, TXTX781,1947,279−29%

46Jefferson County, KYKY795,2227,270−47%

47Buncombe County, NCNC277,4177,250−52%

48Contra Costa County, CACA1,170,0707,177−55%

49San Bernardino County, CACA2,224,0917,161−64%

50Cuyahoga County, OHOH1,232,9256,955−54%

51Alameda County, CACA1,636,6306,931−59%

52Lexington County, SCSC317,5886,795−26%

53Jefferson County, COCO580,4516,788−49%

54Brevard County, FLFL663,9826,761−43%

55Spartanburg County, SCSC380,8576,581−39%

56Montgomery County, MDMD1,074,5826,581−50%

57Hennepin County, MNMN1,284,7846,580−50%

58Tulsa County, OKOK698,7826,576−44%

59Orange County, FLFL1,528,0026,480−56%

60Gwinnett County, GAGA1,018,0996,471−55%

61DeKalb County, GAGA774,3946,335−46%

62Richland County, SCSC434,9566,227−48%

63Johnson County, KSKS636,9066,171−54%

64Arapahoe County, COCO673,8206,147−41%

65Jackson County, MOMO732,9946,107−55%

66Lee County, FLFL875,6076,075−41%

67Hamilton County, TNTN390,8336,074−43%

68St. Louis County, MOMO990,9116,062−61%

69Marion County, ININ992,1966,035−51%

70Montgomery County, PAPA877,6436,013−57%

71Forsyth County, NCNC401,7185,978−46%

72Charleston County, SCSC436,2005,954−47%

73Utah County, UTUT759,8595,755−21%

74Bernalillo County, NMNM667,6015,703−49%

75Rutherford County, TNTN386,3525,681−26%

76Fayette County, KYKY329,7515,670−36%

77Chester County, PAPA557,1165,661−55%

78Palm Beach County, FLFL1,575,7265,660−62%

79Santa Clara County, CACA1,914,3915,615−66%

80Spokane County, WAWA558,3445,579−54%

81Madison County, ALAL433,5165,573−40%

82Williamson County, TNTN272,0615,528−38%

83New York County, NYNY1,664,8625,482−58%

84Kings County, NYNY2,653,9635,442−11%

85Clark County, WAWA532,1195,437−53%

86Gaston County, NCNC246,5585,395−44%

87Denver County, COCO740,6135,390−48%

88Hamilton County, OHOH838,4185,357−50%

89Broward County, FLFL2,013,3175,305−60%

90Sonoma County, CACA486,4445,283−52%

91Washington County, OROR611,7085,278−57%

92Bucks County, PAPA647,8285,174−56%

93Washington County, PAPA210,8025,163−54%

94Lane County, OROR381,5845,091−44%

95Iredell County, NCNC211,7984,993−34%

96Sedgwick County, KSKS538,4334,970−49%

97Pasco County, FLFL674,5164,963−44%

98Macomb County, MIMI886,2214,923−61%

99Anderson County, SCSC219,9304,916−37%

100York County, PAPA473,1974,861−45%

101Anne Arundel County, MDMD603,3804,853−54%

102Cumberland County, MEME317,2224,839−54%

103Westmoreland County, PAPA349,3244,789−58%

104Larimer County, COCO377,2924,781−38%

105Sullivan County, TNTN163,7594,702−37%

106Butler County, PAPA200,1694,670−46%

107Ventura County, CACA830,8514,664−61%

108Cleveland County, OKOK303,9734,650−10%

109DuPage County, ILIL934,2984,537−60%

110Volusia County, FLFL606,5734,527−53%

111Lancaster County, PAPA563,1594,524−54%

112Polk County, FLFL874,7904,516−62%

113Virginia Beach, VAVA453,7374,514−58%

114Chesterfield County, VAVA397,1484,511−50%

115Henrico County, VAVA342,7754,509−43%

116Ada County, IDID546,1414,507−45%

117Baldwin County, ALAL267,7614,450−23%

118New Hanover County, NCNC245,9594,420−55%

119Union County, NCNC267,6744,401−47%

120Greene County, MOMO309,2864,357−35%

121Montgomery County, OHOH539,5984,279−52%

122Plymouth County, MAMA546,8294,275−72%

123Essex County, MAMA826,6534,253−71%

124Randolph County, NCNC149,5164,222+5%

125Philadelphia County, PAPA1,574,2814,219−57%

126Clackamas County, OROR426,2804,200−59%

127Summit County, OHOH538,3764,186−59%

128Fresno County, CACA1,035,4564,171−54%

129Yavapai County, AZAZ252,5524,140−23%

130Mobile County, ALAL411,6584,120−59%

131Horry County, SCSC427,5514,114−47%

132Escambia County, FLFL333,8344,035−48%

133Shelby County, ALAL238,5524,000−45%

134Worcester County, MAMA888,5023,993−72%

135Alamance County, NCNC186,1773,972−38%

136Pulaski County, ARAR404,6113,907−55%

137Sarasota County, FLFL479,9583,902−53%

138Norfolk County, MAMA739,7493,882−75%

139Polk County, IAIA516,5463,882−42%

140San Francisco County, CACA826,0793,866−54%

141Thurston County, WAWA304,2613,862−41%

142Cherokee County, GAGA299,2733,817−49%

143Cumberland County, NCNC338,4733,815−61%

144Orange County, NCNC152,4983,786−46%

145District of Columbia, DCDC693,6453,785−36%

146Baltimore County, MDMD847,6503,780−67%

147Kitsap County, WAWA283,3743,771−53%

148Johnston County, NCNC256,4483,767−9%

149Hillsborough County, NHNH433,4153,762−60%

150San Joaquin County, CACA823,8153,761−45%

151Loudoun County, VAVA449,7493,758−42%

152Durham County, NCNC347,2403,745−51%

153Rockingham County, NHNH324,0773,733−52%

154Erie County, NYNY946,7413,703−64%

155Sumner County, TNTN215,5383,665−38%

156Clay County, MOMO265,0323,658−28%

157Placer County, CACA442,0813,647−46%

158Cabarrus County, NCNC249,7253,644−54%

159Seminole County, FLFL491,8843,636−57%

160Capitol Planning Region, CTCT994,1153,625–

161Blount County, TNTN143,8203,619−53%

162Boulder County, COCO328,5603,610−54%

163Rowan County, NCNC155,0963,574−41%

164Washoe County, NVNV509,3863,572−60%

165Brunswick County, NCNC174,7023,568−21%

166Henderson County, NCNC122,3753,564−44%

167Suffolk County, NYNY1,546,0903,561−78%

168Kern County, CACA927,0683,535−64%

169Leon County, FLFL299,0483,526−52%

170Douglas County, COCO399,3963,489−47%

171Haywood County, NCNC63,3693,488−32%

172Kanawha County, WVWV172,3813,459−49%

173Kent County, MIMI675,2323,455−61%

174Aiken County, SCSC181,5153,376−7%

175Monroe County, NYNY750,5063,323−66%

176Delaware County, PAPA580,9373,306−67%

177Douglas County, NENE606,4603,303−61%

178Hamilton County, ININ387,0363,296−26%

179Washington County, TNTN141,1993,288−30%

180Stark County, OHOH373,7713,273−58%

181Jackson County, OROR221,7953,251−43%

182Lake County, FLFL456,0683,248−47%

183York County, MEME222,4343,163−54%

184Honolulu County, HIHI988,7033,162−53%

185Ramsey County, MNMN541,6233,138−42%

186Pinal County, AZAZ539,3803,069−47%

187Marion County, OROR355,7773,055−51%

188Chatham County, GAGA311,8553,043−30%

189Fort Bend County, TXTX975,1913,034−46%

190Alachua County, FLFL290,0283,012−52%

191Cumberland County, PAPA277,2702,980−55%

192St. Charles County, MOMO426,4992,973−57%

193Western Connecticut Planning Region, CTCT640,4822,970–

194Westchester County, NYNY1,015,7432,958−56%

195Berkeley County, SCSC274,6662,945−32%

196Washtenaw County, MIMI370,2142,917−57%

197Suffolk County, MAMA791,8912,907−60%

198Beaver County, PAPA166,0322,894−57%

199Hays County, TXTX304,3902,893−29%

200Richmond, VAVA237,2572,889−34%

201Okaloosa County, FLFL221,8102,886−35%

202Santa Barbara County, CACA442,0652,878−60%

203Prince William County, VAVA502,9662,865−58%

204Frederick County, MDMD302,8832,862−49%

205Anchorage, AKAK287,1552,859−57%

206Adams County, COCO554,6682,853−56%

207Dane County, WIWI590,3752,837−52%

208Catawba County, NCNC170,1722,820−43%

209Galveston County, TXTX372,2072,818−52%

210Ocean County, NJNJ673,7462,812−62%

211East Baton Rouge Parish, LALA456,1802,806−67%

212Moore County, NCNC110,6192,806−27%

213Bradley County, TNTN115,4652,790−16%

214Sevier County, TNTN101,3422,775−34%

215Lubbock County, TXTX328,9062,772−55%

216Pickens County, SCSC139,1982,745−51%

217Weld County, COCO378,4262,742−39%

218Chesapeake, VAVA255,3322,735−44%

219Forsyth County, GAGA282,8052,719−31%

220Yolo County, CACA224,4102,708−34%

221Pitt County, NCNC182,9362,706−36%

222Warren County, OHOH257,1812,690−20%

223Lake County, ILIL719,3392,681−66%

224Burlington County, NJNJ481,4392,680−58%

225Manatee County, FLFL468,2002,676−54%

226New Castle County, DEDE588,0262,671−71%

227San Mateo County, CACA743,5682,661−64%

228Morris County, NJNJ524,2512,646−55%

229McLennan County, TXTX272,0202,639−46%

230Marin County, CACA253,6942,628−54%

231Clay County, FLFL239,5932,622−45%

232Davis County, UTUT381,2272,621−33%

233San Luis Obispo County, CACA282,3672,618−62%

234Butler County, OHOH400,1282,606−55%

235Benton County, ARAR332,5542,603−38%

236Santa Cruz County, CACA258,8522,594−48%

237Bell County, TXTX402,2482,581−55%

238Solano County, CACA455,3762,580−51%

239Genesee County, MIMI401,0932,578−62%

240Douglas County, OROR111,9512,573−20%

241Davidson County, NCNC180,1822,572−45%

242Onslow County, NCNC217,1752,561−41%

243Washington County, ARAR271,2132,557−44%

244Milwaukee County, WIWI924,2162,548−52%

245Tuscaloosa County, ALAL241,3682,543−43%

246Whatcom County, WAWA236,3922,531−55%

247Kane County, ILIL525,7572,525−57%

248Rankin County, MSMS162,1812,503−55%

249Wilson County, TNTN175,0332,483−27%

250Will County, ILIL712,2532,480−68%

251Erie County, PAPA265,8322,473−64%

252Brazoria County, TXTX419,0802,467−56%

253Howard County, MDMD339,1832,467−41%

254Deschutes County, OROR213,0722,455−45%

255Comal County, TXTX209,1662,446−22%

256Penobscot County, MEME157,9672,443−65%

257Marion County, FLFL442,6602,423−62%

258Dorchester County, SCSC178,3972,420−23%

259Beaufort County, SCSC204,4332,416−40%

260Franklin County, PAPA160,6522,412−43%

261St. Johns County, FLFL346,3282,397−48%

262Madison County, ILIL263,1102,389−47%

263Bay County, FLFL204,4792,387−48%

264Onondaga County, NYNY466,5842,383−69%

265Clermont County, OHOH216,9772,377−23%

266Lee County, ALAL189,8812,362−45%

267Santa Rosa County, FLFL211,1152,355−55%

268Delaware County, OHOH242,0322,349−33%

269Lawrence County, PAPA83,9112,341−55%

270Allen County, ININ402,3292,331−45%

271Parker County, TXTX184,7672,330−35%

272Collier County, FLFL417,1312,330−62%

273Hanover County, VAVA116,4232,313−38%

274Mesa County, COCO162,8452,299−35%

275Arlington County, VAVA243,9312,294−57%

276DeSoto County, MSMS197,9182,279−47%

277St. Tammany Parish, LALA279,1082,265−45%

278Dauphin County, PAPA293,3512,265−58%

279Kootenai County, IDID191,8642,265−41%

280Camden County, NJNJ535,7992,261−62%

281Monmouth County, NJNJ651,0352,260−74%

282Jefferson County, MOMO233,1322,247−33%

283Greene County, OHOH174,3222,239−32%

284Albemarle County, VAVA118,3562,237−44%

285Montgomery County, TNTN249,9352,210−36%

286Smith County, TXTX252,5492,209−49%

287Stanislaus County, CACA557,7192,207−67%

288Stafford County, VAVA170,8032,205−20%

289Lucas County, OHOH423,3472,204−50%

290Hall County, GAGA226,5682,184−32%

291Watauga County, NCNC54,7862,183−33%

292Brazos County, TXTX249,0882,158−58%

293Mohave County, AZAZ228,1022,138−51%

294Lorain County, OHOH323,2192,137−57%

295Orleans Parish, LALA362,1542,128−20%

296Dakota County, MNMN457,7102,116−52%

297Anderson County, TNTN82,0662,116−35%

298Berkeley County, WVWV139,5222,105−16%

299Benton County, WAWA221,7222,095−32%

300Berks County, PAPA440,0722,060−54%

301Harrison County, MSMS217,1362,053−55%

302Harnett County, NCNC150,1372,051−58%

303Rutherford County, NCNC65,7452,049−34%

304Lancaster County, SCSC114,2962,044−34%

305Jackson County, NCNC45,0392,039−32%

306Humboldt County, CACA131,6472,033−46%

307Madison County, MSMS116,2982,024−17%

308Queens County, NYNY2,358,1822,018−56%

309Bristol County, MAMA593,6401,989−73%

310Ellis County, TXTX240,8671,983−36%

311Mercer County, PAPA107,8601,979−61%

312Roanoke County, VAVA97,1501,973−52%

313Missoula County, MTMT123,5131,972−38%

314Nassau County, NYNY1,398,9391,965−78%

315McHenry County, ILIL317,7511,950−52%

316Charlotte County, FLFL217,2121,947−40%

317Butte County, CACA209,2111,943−69%

318Linn County, IAIA232,0281,931−44%

319Baltimore, MDMD569,9971,911−53%

320Licking County, OHOH185,5641,908−42%

321Bergen County, NJNJ977,0261,906−73%

322Strafford County, NHNH135,0431,898−38%

323Sarpy County, NENE208,3031,893−18%

324Calcasieu Parish, LALA208,4661,892−38%

325Alexandria, VAVA160,6621,889−48%

326Norfolk, VAVA231,0131,887−53%

327Boone County, KYKY145,3161,884−10%

328Lake County, OHOH232,2171,882−62%

329Nueces County, TXTX352,9921,879−61%

330Guadalupe County, TXTX201,1111,878−30%

331Columbia County, GAGA169,1891,868−21%

332Southeastern Connecticut Planning Region, CTCT284,0151,867–

333St. Louis, MOMO278,1441,865−38%

334Boone County, MOMO191,7461,859−59%

335Clarke County, GAGA129,9211,852−41%

336Santa Fe County, NMNM156,9071,851−37%

337Rockingham County, VAVA89,3161,848+39%

338Lauderdale County, ALAL97,1351,844−31%

339Rockingham County, NCNC94,1951,841−12%

340Monterey County, CACA433,7291,822−70%

341Trumbull County, OHOH198,9721,820−50%

342Sangamon County, ILIL194,1701,819−56%

343Coweta County, GAGA160,2401,813−31%

344St. Clair County, ILIL250,7081,804−41%

345Kennebec County, MEME129,0671,793−62%

346Caddo Parish, LALA224,2261,792−64%

347Madison County, TNTN100,7901,791−38%

348El Dorado County, CACA192,3231,787−60%

349Gloucester County, NJNJ312,6381,787−60%

350Lancaster County, NENE334,0491,784−61%

351Paulding County, GAGA190,9961,777−31%

352Jackson County, MSMS147,6661,772−50%

353Hampden County, MAMA464,3381,760−71%

354Albany County, NYNY321,2251,755−57%

355Montgomery County, ALAL225,8911,753−58%

356Gallatin County, MTMT128,7401,751−12%

357Sussex County, DEDE277,1401,751−43%

358Florence County, SCSC138,5041,747−70%

359Citrus County, FLFL171,6661,747−47%

360Miami-Dade County, FLFL2,802,0291,738−71%

361Harford County, MDMD266,4461,731−66%

362Augusta County, VAVA78,9401,729−51%

363Skagit County, WAWA132,9751,724−34%

364Muscogee County, GAGA202,1711,719−47%

365Monongalia County, WVWV107,9911,711−51%

366Canyon County, IDID275,1231,702−43%

367Providence County, RIRI678,1791,700−74%

368Kalamazoo County, MIMI263,7951,697−60%

369Shasta County, CACA181,6481,693−62%

370Boyd County, KYKY47,7511,681+43%

371Centre County, PAPA157,3931,677−46%

372El Paso County, TXTX877,8581,674−55%

373Stanly County, NCNC68,8301,670−1%

374Prince George's County, MDMD970,3741,667−64%

375Carteret County, NCNC70,4691,666−37%

376South Central Connecticut Planning Region, CTCT578,7411,664–

377Hinds County, MSMS211,8881,638−66%

378Lamar County, MSMS67,4031,634−1%

379Putnam County, TNTN86,6121,633−14%

380Taylor County, TXTX150,0771,633−52%

381Dutchess County, NYNY300,7081,632−61%

382Oconee County, SCSC83,7751,629−43%

383Burke County, NCNC88,6551,628−56%

384Floyd County, GAGA101,3781,627−30%

385Grayson County, TXTX153,6131,621−40%

386Roane County, TNTN57,3951,619−28%

387Indiana County, PAPA82,8781,607−56%

388Weber County, UTUT278,1741,607−49%

389Merrimack County, NHNH158,0781,605−63%

390Macon County, NCNC39,2321,588−27%

391Union County, GAGA27,8591,588+92%

392Tuolumne County, CACA53,1601,587+3%

393Cabell County, WVWV91,1831,582−50%

394Bibb County, GAGA157,5561,582−33%

395Kenton County, KYKY175,7791,581−56%

396Maury County, TNTN118,1311,575−20%

397Jefferson County, TXTX254,3211,575−60%

398Canadian County, OKOK187,1891,568−20%

399Northampton County, PAPA324,4111,567−54%

400St. Joseph County, ININ272,8611,564−61%

401Hernando County, FLFL221,7011,562−52%

402Wilkes County, NCNC66,2331,561−30%

403Sumter County, FLFL157,7721,559−17%

404Ingham County, MIMI289,7091,555−67%

405Yellowstone County, MTMT172,6921,554−49%

406Lake County, ININ504,6121,551−67%

407Limestone County, ALAL122,9281,545+15%

408Barnstable County, MAMA233,5391,543−67%

409Vanderburgh County, ININ181,9951,536−44%

410Fairfield County, OHOH169,7521,535−40%

411Mahoning County, OHOH224,7061,530−59%

412Tulare County, CACA485,1461,530−46%

413Cowlitz County, WAWA114,8851,530−49%

414Linn County, OROR132,8431,523−51%

415Caldwell County, NCNC81,1051,520−39%

416Wood County, WVWV82,3851,517−28%

417Livingston County, MIMI197,3151,517−63%

418Indian River County, FLFL172,7991,515−57%

419St. Lucie County, FLFL402,4491,513−59%

420Naugatuck Valley Planning Region, CTCT463,3491,510–

421Lincoln County, NCNC98,6541,508−47%

422Jefferson Parish, LALA431,3981,500−60%

423Middlesex County, NJNJ883,3351,500−69%

424Atlantic County, NJNJ278,6571,498−46%

425Sebastian County, ARAR130,6411,493−42%

426Winnebago County, ILIL283,6741,491−53%

427Medina County, OHOH185,0251,489−50%

428Chittenden County, VTVT169,1151,485−60%

429Pueblo County, COCO169,2771,483−39%

430McDowell County, NCNC45,1981,479−43%

431Saratoga County, NYNY241,3431,472−60%

432Washington County, UTUT213,6701,469−30%

433Ouachita Parish, LALA158,5421,465−56%

434Carter County, TNTN57,3611,459−44%

435Houston County, GAGA178,2141,451−47%

436Johnson County, TXTX218,0481,448−54%

437Waukesha County, WIWI417,2101,443−60%

438Kent County, DEDE194,7861,435−53%

439Ottawa County, MIMI308,4591,433−52%

440Champaign County, ILIL209,9721,429−51%

441Warren County, KYKY149,3751,422−52%

442Jefferson County, TNTN60,0241,415−25%

443Shawnee County, KSKS178,6071,414−67%

444Washington County, VTVT59,6521,410−22%

445Laurens County, SCSC71,8481,407−43%

446Lee County, NCNC70,2581,406−34%

447Loudon County, TNTN63,7641,405−37%

448Midland County, TXTX187,8551,405−46%

449Randall County, TXTX152,3511,405−50%

450Montgomery County, VAVA98,4341,403−59%

451Cass County, MOMO115,8591,402−42%

452Fayette County, GAGA125,1561,399−58%

453Greenwood County, SCSC70,3791,398−51%

454Gregg County, TXTX126,0951,394−36%

455Johnson County, ININ174,2621,393−43%

456Morgan County, ALAL126,4831,392−56%

457Clark County, OHOH135,3401,390−51%

458Rockwall County, TXTX140,7381,390−18%

459Matanuska-Susitna, AKAK118,6661,388−46%

460Crawford County, PAPA81,7921,385−58%

461Kershaw County, SCSC73,1661,385−18%

462Scott County, IAIA175,2591,383−41%

463Floyd County, ININ82,1531,373+3%

464Porter County, ININ176,0491,373−51%

465Greene County, TNTN73,8311,368−37%

466Douglas County, KSKS120,9201,362−49%

467Carroll County, MDMD176,6771,358−56%

468Elmore County, ALAL91,5771,343−53%

469Peoria County, ILIL178,5531,343−54%

470Hawkins County, TNTN59,5591,342−28%

471Pender County, NCNC72,1111,340−48%

472Sumter County, SCSC105,0671,333−41%

473Frederick County, VAVA99,9551,332−25%

474York County, VAVA71,3741,325−37%

475Martin County, FLFL166,2721,324−61%

476Clark County, ININ130,4511,316−21%

477Sandoval County, NMNM159,5651,316−48%

478Jasper County, MOMO127,4281,315−51%

479Anoka County, MNMN381,6051,312−55%

480Madison County, KYKY101,6961,309−53%

481Transylvania County, NCNC34,2111,307−52%

482Faulkner County, ARAR133,9791,301−50%

483Tuscarawas County, OHOH92,3731,301−30%

484Washington County, VAVA53,8981,295−52%

485St. Clair County, MIMI160,4861,292−64%

486Niagara County, NYNY208,9121,292−54%

487Mitchell County, NCNC15,0621,290−6%

488Chatham County, NCNC85,1111,278−55%

489Ohio County, WVWV40,4961,275−16%

490Hardin County, TXTX58,7231,270−13%

491Lehigh County, PAPA384,3831,267−64%

492Garland County, ARAR99,6951,266−56%

493Yamhill County, OROR110,0241,265−49%

494Calhoun County, ALAL115,8341,261−48%

495Richland County, OHOH124,8931,260−52%

496Victoria County, TXTX92,6561,257−16%

497Lee County, MSMS83,7311,256−43%

498Lower Connecticut River Valley Planning Region, CTCT177,3111,255–

499Bastrop County, TXTX118,9081,252−12%

500Platte County, MOMO114,4001,251−46%

SHOWING 1–500 OF 3,090

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Download CSV (full list, 3,090 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES

Frequently asked

Which county has the highest scotch-irish population?

Maricopa County, Arizona ranks #1 with 26,736 (2024 American Community Survey).

What are the top 5 counties by scotch-irish population?

Maricopa County, Arizona, Los Angeles County, California, Harris County, Texas, King County, Washington, San Diego County, California.

How many counties are in this ranking?

3,090 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 ACS 5-year data.

How is scotch-irish population measured?

Number of residents who are Scotch-Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2024).