RANKING · 2020 CENSUS · 500 SHOWN OF 3,101

Largest Scotch-Irish population, US counties · 2020

US counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Los Angeles County, California leads at 31,152. 3,101 counties qualify in total. Texas carries 6 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 States0.9% of US population331,449,2812,937,156–

01Los Angeles County, CACA9,694,93431,152−53%

02Maricopa County, AZAZ4,689,55829,783−48%

03Harris County, TXTX5,045,02628,542−40%

04Mecklenburg County, NCNC1,233,38324,952−29%

05King County, WAWA2,344,93923,836−44%

06San Diego County, CACA3,282,24820,681−55%

07Wake County, NCNC1,257,23520,238−29%

08Tarrant County, TXTX2,248,46619,432−43%

09Dallas County, TXTX2,661,39717,983−42%

10Allegheny County, PAPA1,225,03517,936−41%

11Knox County, TNTN511,45317,633−14%

12Orange County, CACA3,149,50716,666−55%

13Greenville County, SCSC583,12515,750−1%

14Cook County, ILIL5,194,62515,225−54%

15Travis County, TXTX1,389,67014,885−36%

16Riverside County, CACA2,544,91613,431−46%

17Fairfax County, VAVA1,167,87312,545−46%

18Bexar County, TXTX2,160,08812,375−41%

19Fulton County, GAGA1,098,79112,223−20%

20Middlesex County, MAMA1,669,97911,826−60%

21Denton County, TXTX1,069,34611,777−22%

22Franklin County, OHOH1,361,53611,588−43%

23York County, SCSC306,88711,566−10%

24Davidson County, TNTN745,90411,539−40%

25Pinellas County, FLFL948,56311,398−35%

26Shelby County, TNTN910,22610,928−44%

27Collin County, TXTX1,297,17910,906−28%

28Sacramento County, CACA1,618,46010,714−50%

29Clark County, NVNV2,407,22610,639−49%

30Pima County, AZAZ1,074,68510,504−41%

31Guilford County, NCNC562,23410,345−36%

32Duval County, FLFL1,062,96310,189−42%

33Snohomish County, WAWA870,65610,110−46%

34Jefferson County, ALAL665,7429,879−44%

35Oakland County, MIMI1,288,3379,784−55%

36Cobb County, GAGA793,3459,711−38%

37Hillsborough County, FLFL1,574,1159,668−50%

38Buncombe County, NCNC277,4179,559−36%

39Salt Lake County, UTUT1,220,9169,535−24%

40Multnomah County, OROR795,3919,416−47%

41Williamson County, TXTX752,8279,387−4%

42Wayne County, MIMI1,769,0389,191−59%

43San Bernardino County, CACA2,224,0919,042−55%

44Cuyahoga County, OHOH1,232,9258,750−42%

45El Paso County, COCO757,0408,309−43%

46Montgomery County, TXTX781,1948,209−20%

47St. Louis County, MOMO990,9118,105−48%

48Alameda County, CACA1,636,6307,999−52%

49Horry County, SCSC427,5517,991+3%

50Spartanburg County, SCSC380,8577,977−26%

51Palm Beach County, FLFL1,575,7267,973−46%

52Lexington County, SCSC317,5887,837−15%

53Gwinnett County, GAGA1,018,0997,811−46%

54Jefferson County, KYKY795,2227,782−44%

55Orange County, FLFL1,528,0027,712−48%

56Pierce County, WAWA946,2887,705−58%

57Richland County, SCSC434,9567,686−36%

58Contra Costa County, CACA1,170,0707,522−52%

59Johnson County, KSKS636,9067,482−44%

60Washington County, PAPA210,8027,459−34%

61Tulsa County, OKOK698,7827,381−37%

62Forsyth County, NCNC401,7187,373−34%

63Montgomery County, MDMD1,074,5827,369−44%

64Santa Clara County, CACA1,914,3917,308−55%

65DeKalb County, GAGA774,3947,242−39%

66Arapahoe County, COCO673,8207,138−31%

67Westmoreland County, PAPA349,3246,983−39%

68Brevard County, FLFL663,9826,947−41%

69Jackson County, MOMO732,9946,944−49%

70Spokane County, WAWA558,3446,923−43%

71Fayette County, KYKY329,7516,905−22%

72Marion County, ININ992,1966,895−44%

73Gaston County, NCNC246,5586,855−28%

74Jefferson County, COCO580,4516,787−49%

75Hennepin County, MNMN1,284,7846,775−49%

76Charleston County, SCSC436,2006,766−39%

77New York County, NYNY1,664,8626,758−49%

78Oklahoma County, OKOK822,1256,755−51%

79Lee County, FLFL875,6076,739−34%

80Denver County, COCO740,6136,721−35%

81Broward County, FLFL2,013,3176,639−50%

82Sullivan County, TNTN163,7596,323−15%

83Ventura County, CACA830,8516,303−48%

84Madison County, ALAL433,5166,281−33%

85Union County, NCNC267,6746,251−24%

86Montgomery County, PAPA877,6436,234−56%

87Rutherford County, TNTN386,3526,216−19%

88Clark County, WAWA532,1196,216−46%

89Hamilton County, TNTN390,8336,212−42%

90Washington County, OROR611,7086,193−50%

91New Hanover County, NCNC245,9596,114−38%

92Bucks County, PAPA647,8286,030−48%

93Anderson County, SCSC219,9305,987−23%

94Chester County, PAPA557,1165,903−53%

95Bernalillo County, NMNM667,6015,871−47%

96Anne Arundel County, MDMD603,3805,803−45%

97Williamson County, TNTN272,0615,765−35%

98Polk County, FLFL874,7905,735−52%

99Lancaster County, PAPA563,1595,705−43%

100Butler County, PAPA200,1695,700−34%

101Pulaski County, ARAR404,6115,642−34%

102Essex County, MAMA826,6535,626−61%

103Sonoma County, CACA486,4445,604−50%

104Hamilton County, OHOH838,4185,574−48%

105Cabarrus County, NCNC249,7255,546−30%

106Iredell County, NCNC211,7985,545−26%

107Macomb County, MIMI886,2215,520−56%

108Durham County, NCNC347,2405,481−29%

109Escambia County, FLFL333,8345,455−30%

110Chesterfield County, VAVA397,1485,424−40%

111York County, PAPA473,1975,416−39%

112Utah County, UTUT759,8595,338−26%

113Larimer County, COCO377,2925,296−32%

114Henrico County, VAVA342,7755,279−33%

115Lane County, OROR381,5845,185−43%

116Cumberland County, MEME317,2225,172−51%

117Randolph County, NCNC149,5164,989+24%

118Fresno County, CACA1,035,4564,944−46%

119Cumberland County, NCNC338,4734,920−50%

120Virginia Beach, VAVA453,7374,902−55%

121Blount County, TNTN143,8204,898−37%

122Henderson County, NCNC122,3754,886−23%

123Montgomery County, OHOH539,5984,883−45%

124Boulder County, COCO328,5604,874−37%

125Summit County, OHOH538,3764,869−52%

126Plymouth County, MAMA546,8294,857−68%

127Worcester County, MAMA888,5024,857−66%

128Baltimore County, MDMD847,6504,826−58%

129Kings County, NYNY2,653,9634,814−21%

130Pasco County, FLFL674,5164,786−46%

131Rowan County, NCNC155,0964,768−21%

132Orange County, NCNC152,4984,730−32%

133Sedgwick County, KSKS538,4334,663−52%

134Kern County, CACA927,0684,654−53%

135Fort Bend County, TXTX975,1914,643−18%

136Mobile County, ALAL411,6584,641−53%

137Greene County, MOMO309,2864,629−30%

138Alamance County, NCNC186,1774,619−28%

139DuPage County, ILIL934,2984,604−59%

140District of Columbia, DCDC693,6454,553−23%

141Cherokee County, GAGA299,2734,526−39%

142Volusia County, FLFL606,5734,523−53%

143Baldwin County, ALAL267,7614,518−22%

144Shelby County, ALAL238,5524,442−39%

145Polk County, IAIA516,5464,388−34%

146Delaware County, PAPA580,9374,370−56%

147Haywood County, NCNC63,3694,360−14%

148Sevier County, TNTN101,3424,350+4%

149Leon County, FLFL299,0484,283−42%

150Washoe County, NVNV509,3864,245−52%

151Johnston County, NCNC256,4484,245+2%

152Stark County, OHOH373,7714,228−46%

153Loudoun County, VAVA449,7494,214−35%

154Cleveland County, OKOK303,9734,211−18%

155Monroe County, NYNY750,5064,176−57%

156Sarasota County, FLFL479,9584,174−50%

157Norfolk County, MAMA739,7494,170−73%

158Yavapai County, AZAZ252,5524,149−23%

159Rockingham County, NHNH324,0774,067−48%

160Prince William County, VAVA502,9664,065−40%

161Ada County, IDID546,1414,063−51%

162Kitsap County, WAWA283,3744,057−49%

163Douglas County, NENE606,4604,027−52%

164Philadelphia County, PAPA1,574,2814,015−59%

165Placer County, CACA442,0813,959−41%

166Sumner County, TNTN215,5383,945−33%

167Kanawha County, WVWV172,3813,940−42%

168Douglas County, COCO399,3963,925−41%

169Manatee County, FLFL468,2003,921−32%

170Beaver County, PAPA166,0323,921−41%

171Suffolk County, NYNY1,546,0903,912−75%

172Clackamas County, OROR426,2803,891−62%

173Erie County, NYNY946,7413,842−63%

174Dane County, WIWI590,3753,838−35%

175Okaloosa County, FLFL221,8103,809−14%

176San Joaquin County, CACA823,8153,790−45%

177East Baton Rouge Parish, LALA456,1803,790−56%

178Cumberland County, PAPA277,2703,785−43%

179Brunswick County, NCNC174,7023,743−17%

180San Francisco County, CACA826,0793,678−57%

181Erie County, PAPA265,8323,675−47%

182Adams County, COCO554,6683,674−43%

183Harnett County, NCNC150,1373,639−25%

184Onslow County, NCNC217,1753,635−16%

185Seminole County, FLFL491,8843,623−57%

186Hillsborough County, NHNH433,4153,619−62%

187Kent County, MIMI675,2323,569−59%

188Rankin County, MSMS162,1813,562−35%

189Ramsey County, MNMN541,6233,562−34%

190Florence County, SCSC138,5043,538−39%

191Washington County, TNTN141,1993,529−25%

192Santa Barbara County, CACA442,0653,524−52%

193Anchorage, AKAK287,1553,519−48%

194St. Charles County, MOMO426,4993,514−49%

195Lake County, ILIL719,3393,514−56%

196Clay County, MOMO265,0323,480−31%

197Galveston County, TXTX372,2073,469−41%

198Catawba County, NCNC170,1723,448−31%

199Berkeley County, SCSC274,6663,448−21%

200Honolulu County, HIHI988,7033,445−48%

201Lee County, ALAL189,8813,388−21%

202Forsyth County, GAGA282,8053,376−14%

203Weld County, COCO378,4263,373−26%

204New Castle County, DEDE588,0263,348−64%

205San Mateo County, CACA743,5683,316−55%

206Thurston County, WAWA304,2613,288−49%

207Pickens County, SCSC139,1983,258−42%

208St. Johns County, FLFL346,3283,251−29%

209St. Tammany Parish, LALA279,1083,240−21%

210Benton County, ARAR332,5543,237−23%

211Lake County, FLFL456,0683,224−48%

212Brazoria County, TXTX419,0803,211−43%

213Will County, ILIL712,2533,205−59%

214Lubbock County, TXTX328,9063,169−48%

215Marion County, FLFL442,6603,153−50%

216Alachua County, FLFL290,0283,126−50%

217Westchester County, NYNY1,015,7433,113−54%

218Mercer County, PAPA107,8603,109−39%

219Richmond, VAVA237,2573,096−30%

220Moore County, NCNC110,6193,084−20%

221Pitt County, NCNC182,9363,072−28%

222Hamilton County, ININ387,0363,066−31%

223Augusta County, VAVA78,9403,064−13%

224Hall County, GAGA226,5683,062−5%

225Ocean County, NJNJ673,7463,032−59%

226Washington County, ARAR271,2133,030−34%

227Howard County, MDMD339,1833,010−28%

228Whatcom County, WAWA236,3923,004−47%

229Bell County, TXTX402,2483,002−48%

230Santa Cruz County, CACA258,8522,979−40%

231Marin County, CACA253,6942,971−48%

232Butler County, OHOH400,1282,948−49%

233Chatham County, GAGA311,8552,938−32%

234Jackson County, OROR221,7952,938−49%

235Marion County, OROR355,7772,935−53%

236Beaufort County, SCSC204,4332,933−28%

237Nassau County, NYNY1,398,9392,913−67%

238Franklin County, PAPA160,6522,910−31%

239Lawrence County, PAPA83,9112,908−45%

240Stanislaus County, CACA557,7192,875−58%

241Harrison County, MSMS217,1362,870−37%

242McLennan County, TXTX272,0202,863−41%

243Chesapeake, VAVA255,3322,855−42%

244Watauga County, NCNC54,7862,853−13%

245Brazos County, TXTX249,0882,848−45%

246Davidson County, NCNC180,1822,839−39%

247Wilson County, TNTN175,0332,773−19%

248Santa Rosa County, FLFL211,1152,771−47%

249El Dorado County, CACA192,3232,753−39%

250Burlington County, NJNJ481,4392,753−57%

251Hays County, TXTX304,3902,745−33%

252Stafford County, VAVA170,8032,708−1%

253Davis County, UTUT381,2272,701−31%

254Suffolk County, MAMA791,8912,701−63%

255Collier County, FLFL417,1312,699−56%

256Anderson County, TNTN82,0662,699−17%

257San Luis Obispo County, CACA282,3672,685−61%

258Dauphin County, PAPA293,3512,674−50%

259Tuscaloosa County, ALAL241,3682,673−40%

260Monmouth County, NJNJ651,0352,666−70%

261Kane County, ILIL525,7572,660−55%

262Lucas County, OHOH423,3472,659−39%

263Pinal County, AZAZ539,3802,659−54%

264Washtenaw County, MIMI370,2142,647−61%

265McHenry County, ILIL317,7512,641−35%

266Deschutes County, OROR213,0722,628−41%

267Delaware County, OHOH242,0322,623−25%

268Solano County, CACA455,3762,608−50%

269Ingham County, MIMI289,7092,605−45%

270Milwaukee County, WIWI924,2162,604−51%

271Lancaster County, SCSC114,2962,593−17%

272Genesee County, MIMI401,0932,586−62%

273Clay County, FLFL239,5932,539−47%

274Mesa County, COCO162,8452,526−29%

275Montgomery County, TNTN249,9352,506−27%

276Onondaga County, NYNY466,5842,494−67%

277Smith County, TXTX252,5492,491−42%

278Kalamazoo County, MIMI263,7952,491−41%

279Hinds County, MSMS211,8882,488−49%

280Columbia County, GAGA169,1892,485+5%

281Jackson County, NCNC45,0392,466−18%

282Aiken County, SCSC181,5152,462−32%

283Butte County, CACA209,2112,456−61%

284Rutherford County, NCNC65,7452,453−22%

285Barnstable County, MAMA233,5392,449−48%

286Frederick County, MDMD302,8832,444−56%

287Norfolk, VAVA231,0132,440−39%

288Roanoke County, VAVA97,1502,438−41%

289Arlington County, VAVA243,9312,433−54%

290Miami-Dade County, FLFL2,802,0292,429−60%

291Kootenai County, IDID191,8642,427−37%

292Bay County, FLFL204,4792,417−47%

293Comal County, TXTX209,1662,411−23%

294DeSoto County, MSMS197,9182,410−44%

295Boone County, MOMO191,7462,408−47%

296Forrest County, MSMS79,0342,407+21%

297Lancaster County, NENE334,0492,406−48%

298Clarke County, GAGA129,9212,402−23%

299Lorain County, OHOH323,2192,400−52%

300Caldwell County, NCNC81,1052,386−5%

301Madison County, ILIL263,1102,382−47%

302Spotsylvania County, VAVA155,3882,381−21%

303Morris County, NJNJ524,2512,377−60%

304Orleans Parish, LALA362,1542,354−11%

305Lake County, ININ504,6122,353−50%

306Dakota County, MNMN457,7102,352−47%

307Bradley County, TNTN115,4652,338−30%

308Camden County, NJNJ535,7992,336−61%

309Jefferson County, TXTX254,3212,329−40%

310Douglas County, OROR111,9512,328−27%

311Clermont County, OHOH216,9772,312−25%

312Hanover County, VAVA116,4232,305−39%

313Berks County, PAPA440,0722,286−49%

314Benton County, WAWA221,7222,268−26%

315Mohave County, AZAZ228,1022,264−48%

316Lamar County, MSMS67,4032,232+36%

317Caddo Parish, LALA224,2262,212−56%

318Centre County, PAPA157,3932,211−29%

319Chatham County, NCNC85,1112,206−23%

320Fairfield County, OHOH169,7522,204−13%

321Cleveland County, NCNC103,3252,203−34%

322Humboldt County, CACA131,6472,202−41%

323Greene County, OHOH174,3222,191−33%

324Canadian County, OKOK187,1892,187+11%

325Lincoln County, NCNC98,6542,184−23%

326Dorchester County, SCSC178,3972,181−31%

327Carteret County, NCNC70,4692,169−19%

328Burke County, NCNC88,6552,166−42%

329Queens County, NYNY2,358,1822,163−53%

330Guadalupe County, TXTX201,1112,153−20%

331Allen County, ININ402,3292,144−50%

332Bergen County, NJNJ977,0262,143−70%

333York County, MEME222,4342,128−69%

334Coweta County, GAGA160,2402,127−19%

335St. Lucie County, FLFL402,4492,123−42%

336Providence County, RIRI678,1792,119−67%

337Weber County, UTUT278,1742,115−32%

338Sussex County, DEDE277,1402,109−31%

339Morgan County, ALAL126,4832,102−34%

340Licking County, OHOH185,5642,092−36%

341Lake County, OHOH232,2172,089−58%

342Sumter County, FLFL157,7722,074+11%

343Nueces County, TXTX352,9922,066−57%

344Sangamon County, ILIL194,1702,059−50%

345Charlotte County, FLFL217,2122,058−36%

346Baltimore, MDMD569,9972,057−50%

347Oconee County, SCSC83,7752,052−29%

348Warren County, KYKY149,3752,052−31%

349Muscogee County, GAGA202,1712,047−37%

350Montgomery County, ALAL225,8912,046−51%

351Warren County, OHOH257,1812,045−39%

352Bristol County, MAMA593,6402,042−72%

353Jackson County, MSMS147,6662,041−42%

354Montgomery County, VAVA98,4342,015−41%

355Greenwood County, SCSC70,3792,015−29%

356Sarpy County, NENE208,3032,012−13%

357Madison County, TNTN100,7902,009−31%

358Calcasieu Parish, LALA208,4662,005−34%

359Randall County, TXTX152,3511,987−29%

360Albemarle County, VAVA118,3561,985−50%

361Madison County, MSMS116,2981,983−18%

362Missoula County, MTMT123,5131,979−38%

363Penobscot County, MEME157,9671,975−72%

364Wilkes County, NCNC66,2331,973−11%

365Parker County, TXTX184,7671,960−45%

366Yolo County, CACA224,4101,958−52%

367Merrimack County, NHNH158,0781,955−55%

368Henry County, GAGA264,9221,955−46%

369Indian River County, FLFL172,7991,953−45%

370Darlington County, SCSC62,8881,952+9%

371Jefferson Parish, LALA431,3981,941−48%

372St. Louis, MOMO278,1441,935−36%

373Jefferson County, TNTN60,0241,935+3%

374Maury County, TNTN118,1311,934−2%

375St. Joseph County, ININ272,8611,923−52%

376Waukesha County, WIWI417,2101,919−47%

377Stanly County, NCNC68,8301,918+14%

378Alexandria, VAVA160,6621,917−47%

379Taylor County, TXTX150,0771,916−44%

380Macon County, NCNC39,2321,911−12%

381Pender County, NCNC72,1111,911−26%

382Berkeley County, WVWV139,5221,911−23%

383Columbiana County, OHOH99,3771,906−47%

384Tulare County, CACA485,1461,904−33%

385Mahoning County, OHOH224,7061,903−49%

386Hampden County, MAMA464,3381,901−68%

387Roanoke, VAVA99,1111,897−52%

388Fayette County, PAPA123,0211,890−30%

389Lee County, MSMS83,7311,887−14%

390Monongalia County, WVWV107,9911,884−46%

391Monterey County, CACA433,7291,881−69%

392Wood County, WVWV82,3851,877−11%

393Santa Fe County, NMNM156,9071,876−37%

394McDowell County, NCNC45,1981,871−28%

395Madison County, KYKY101,6961,868−33%

396Grayson County, TXTX153,6131,867−31%

397Monroe County, ININ143,3451,855−51%

398Skagit County, WAWA132,9751,845−29%

399Yakima County, WAWA259,1851,827−43%

400Cabell County, WVWV91,1831,816−43%

401Laurens County, SCSC71,8481,816−26%

402Kenton County, KYKY175,7791,814−49%

403Calhoun County, ALAL115,8341,809−25%

404Champaign County, ILIL209,9721,806−38%

405Linn County, IAIA232,0281,806−48%

406Harford County, MDMD266,4461,806−64%

407Gloucester County, NJNJ312,6381,796−60%

408Carroll County, MDMD176,6771,794−41%

409Ottawa County, MIMI308,4591,778−41%

410Indiana County, PAPA82,8781,776−52%

411Armstrong County, PAPA63,6981,769−29%

412Linn County, OROR132,8431,765−43%

413Strafford County, NHNH135,0431,749−43%

414Citrus County, FLFL171,6661,747−47%

415Kennebec County, MEME129,0671,746−63%

416Gallatin County, MTMT128,7401,737−12%

417Benton County, OROR97,7281,733−16%

418Walton County, FLFL93,2881,726−10%

419Androscoggin County, MEME116,4871,717−47%

420Yellowstone County, MTMT172,6921,709−44%

421Northampton County, PAPA324,4111,705−50%

422Boone County, KYKY145,3161,703−19%

423Matanuska-Susitna, AKAK118,6661,699−34%

424Jefferson County, MOMO233,1321,694−50%

425Clark County, OHOH135,3401,691−40%

426Tangipahoa Parish, LALA141,3461,690+23%

427Saratoga County, NYNY241,3431,690−54%

428Prince George's County, MDMD970,3741,678−64%

429Jasper County, MOMO127,4281,672−37%

430Shasta County, CACA181,6481,672−63%

431Surry County, NCNC72,2871,656−19%

432Winnebago County, ILIL283,6741,652−48%

433Roane County, TNTN57,3951,642−27%

434Rockingham County, VAVA89,3161,642+23%

435Wayne County, NCNC122,2781,636−42%

436Fairbanks North Star, AKAK93,9721,632−36%

437Trumbull County, OHOH198,9721,632−55%

438Canyon County, IDID275,1231,624−46%

439Chittenden County, VTVT169,1151,616−56%

440Carter County, TNTN57,3611,616−38%

441Victoria County, TXTX92,6561,611+8%

442Medina County, OHOH185,0251,611−46%

443Newport News, VAVA183,2301,607−48%

444Blair County, PAPA119,5411,602−50%

445Middlesex County, NJNJ883,3351,601−67%

446Ellis County, TXTX240,8671,601−48%

447Vanderburgh County, ININ181,9951,590−42%

448El Paso County, TXTX877,8581,587−57%

449St. Clair County, ILIL250,7081,586−48%

450Bedford County, VAVA83,0591,583−30%

451Albany County, NYNY321,2251,583−62%

452Crawford County, PAPA81,7921,582−52%

453Kershaw County, SCSC73,1661,570−7%

454Anoka County, MNMN381,6051,565−46%

455Lee County, NCNC70,2581,563−26%

456Midland County, TXTX187,8551,560−40%

457Putnam County, TNTN86,6121,558−18%

458Scott County, KYKY62,2621,557+48%

459Washington County, UTUT213,6701,556−26%

460Rockingham County, NCNC94,1951,555−26%

461Pueblo County, COCO169,2771,553−36%

462Lauderdale County, ALAL97,1351,543−43%

463Washington County, VAVA53,8981,540−43%

464Portage County, OHOH163,4041,539−54%

465Porter County, ININ176,0491,531−45%

466Martin County, FLFL166,2721,529−55%

467Avery County, NCNC18,1101,523−1%

468Osceola County, FLFL481,7181,516−34%

469Davie County, NCNC45,8551,515−4%

470Cass County, MOMO115,8591,512−37%

471Orange County, NYNY417,6691,512−65%

472Livingston County, MIMI197,3151,508−63%

473Peoria County, ILIL178,5531,504−48%

474Hamblen County, TNTN68,8431,496−31%

475Paulding County, GAGA190,9961,490−42%

476Richmond County, NCNC42,0411,481−11%

477St. Clair County, MIMI160,4861,477−59%

478Ouachita Parish, LALA158,5421,472−56%

479Hawaii County, HIHI210,0431,472−46%

480Hardin County, TXTX58,7231,472+1%

481Hardin County, KYKY113,4821,470−7%

482Gregg County, TXTX126,0951,468−33%

483Hawkins County, TNTN59,5591,468−22%

484Floyd County, GAGA101,3781,465−37%

485Bartow County, GAGA120,8001,462−26%

486Shawnee County, KSKS178,6071,458−66%

487Johnson County, ININ174,2621,457−40%

488Flathead County, MTMT115,4291,457−44%

489Washington County, MNMN286,8951,453−43%

490Bibb County, GAGA157,5561,453−38%

491Elmore County, ALAL91,5771,446−50%

492Lehigh County, PAPA384,3831,438−59%

493Limestone County, ALAL122,9281,437+7%

494Lewis and Clark County, MTMT75,3311,434−27%

495Atlantic County, NJNJ278,6571,433−48%

496Kaufman County, TXTX209,2351,431−37%

497Saline County, ARAR133,2881,430−44%

498Nevada County, CACA101,9111,425−59%

499Sumter County, SCSC105,0671,420−37%

500Cambria County, PAPA128,9681,416−44%

SHOWING 1–500 OF 3,101

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Download CSV (full list, 3,101 rows)

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

Frequently asked

Which county has the highest scotch-irish population?

Los Angeles County, California ranks #1 with 31,152 (2020 Decennial Census).

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

Los Angeles County, California, Maricopa County, Arizona, Harris County, Texas, Mecklenburg County, North Carolina, King County, Washington.

How many counties are in this ranking?

3,101 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is scotch-irish population measured?

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