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. The median across all 3,090 is 228. Biggest climber in the top 100 since 2020: Kings County, NY, up 45 places to #84.

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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–

01▲1Maricopa County, AZAZ4,689,55826,736−53%

02▼1Los Angeles County, CACA9,694,93426,263−60%

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

04▲1King County, WAWA2,344,93920,537−52%

05▲1San Diego County, CACA3,282,24818,987−59%

06▲1Wake County, NCNC1,257,23518,490−36%

07▼3Mecklenburg County, NCNC1,233,38318,181−49%

08▲2Allegheny County, PAPA1,225,03516,679−45%

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

10▼2Tarrant County, TXTX2,248,46615,878−54%

11▲1Orange County, CACA3,149,50715,259−59%

12▼1Knox County, TNTN511,45313,770−32%

13▲1Cook County, ILIL5,194,62513,501−59%

14▲1Travis County, TXTX1,389,67013,405−42%

15▼2Greenville County, SCSC583,12512,637−20%

16▲2Bexar County, TXTX2,160,08812,575−40%

17▲7Davidson County, TNTN745,90411,165−42%

18▲4Franklin County, OHOH1,361,53610,982−46%

19▲8Collin County, TXTX1,297,17910,621−30%

20▲1Denton County, TXTX1,069,34610,523−31%

21▼1Middlesex County, MAMA1,669,97910,375−65%

22▲6Sacramento County, CACA1,618,46010,142−53%

23▼4Fulton County, GAGA1,098,7919,903−35%

24▼7Fairfax County, VAVA1,167,8739,734−58%

25▲5Pima County, AZAZ1,074,6859,449−47%

26▼10Riverside County, CACA2,544,9169,434−62%

27▼2Pinellas County, FLFL948,5639,264−47%

28▲11Salt Lake County, UTUT1,220,9168,860−29%

29▲13Wayne County, MIMI1,769,0388,849−61%

30▲5Oakland County, MIMI1,288,3378,812−59%

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

32▼9York County, SCSC306,8878,637−33%

33▼1Duval County, FLFL1,062,9638,348−53%

34▼3Guilford County, NCNC562,2348,344−48%

35▲5Multnomah County, OROR795,3918,325−53%

36▼7Clark County, NVNV2,407,2268,305−60%

37▼1Cobb County, GAGA793,3458,182−48%

38▲18Pierce County, WAWA946,2888,159−56%

39▼2Hillsborough County, FLFL1,574,1158,135−58%

40▼6Jefferson County, ALAL665,7427,978−55%

41▲4El Paso County, COCO757,0407,953−45%

42▼9Snohomish County, WAWA870,6567,829−58%

43▲35Oklahoma County, OKOK822,1257,811−43%

44▼18Shelby County, TNTN910,2267,284−63%

45▲1Montgomery County, TXTX781,1947,279−29%

46▲8Jefferson County, KYKY795,2227,270−47%

47▼9Buncombe County, NCNC277,4177,250−52%

48▲10Contra Costa County, CACA1,170,0707,177−55%

49▼6San Bernardino County, CACA2,224,0917,161−64%

50▼6Cuyahoga County, OHOH1,232,9256,955−54%

51▼3Alameda County, CACA1,636,6306,931−59%

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

53▲21Jefferson County, COCO580,4516,788−49%

54▲14Brevard County, FLFL663,9826,761−43%

55▼5Spartanburg County, SCSC380,8576,581−39%

56▲7Montgomery County, MDMD1,074,5826,581−50%

57▲18Hennepin County, MNMN1,284,7846,580−50%

58▲3Tulsa County, OKOK698,7826,576−44%

59▼4Orange County, FLFL1,528,0026,480−56%

60▼7Gwinnett County, GAGA1,018,0996,471−55%

61▲4DeKalb County, GAGA774,3946,335−46%

62▼5Richland County, SCSC434,9566,227−48%

63▼4Johnson County, KSKS636,9066,171−54%

64▲2Arapahoe County, COCO673,8206,147−41%

65▲4Jackson County, MOMO732,9946,107−55%

66▲13Lee County, FLFL875,6076,075−41%

67▲22Hamilton County, TNTN390,8336,074−43%

68▼21St. Louis County, MOMO990,9116,062−61%

69▲3Marion County, ININ992,1966,035−51%

70▲16Montgomery County, PAPA877,6436,013−57%

71▼9Forsyth County, NCNC401,7185,978−46%

72▲4Charleston County, SCSC436,2005,954−47%

73▲39Utah County, UTUT759,8595,755−21%

74▲21Bernalillo County, NMNM667,6015,703−49%

75▲12Rutherford County, TNTN386,3525,681−26%

76▼5Fayette County, KYKY329,7515,670−36%

77▲17Chester County, PAPA557,1165,661−55%

78▼27Palm Beach County, FLFL1,575,7265,660−62%

79▼15Santa Clara County, CACA1,914,3915,615−66%

80▼10Spokane County, WAWA558,3445,579−54%

81▲3Madison County, ALAL433,5165,573−40%

82▲15Williamson County, TNTN272,0615,528−38%

83▼6New York County, NYNY1,664,8625,482−58%

84▲45Kings County, NYNY2,653,9635,442−11%

85▲3Clark County, WAWA532,1195,437−53%

86▼13Gaston County, NCNC246,5585,395−44%

87▼7Denver County, COCO740,6135,390−48%

88▲16Hamilton County, OHOH838,4185,357−50%

89▼8Broward County, FLFL2,013,3175,305−60%

90▲13Sonoma County, CACA486,4445,283−52%

91▼1Washington County, OROR611,7085,278−57%

92Bucks County, PAPA647,8285,174−56%

93▼33Washington County, PAPA210,8025,163−54%

94▲21Lane County, OROR381,5845,091−44%

95▲11Iredell County, NCNC211,7984,993−34%

96▲37Sedgwick County, KSKS538,4334,970−49%

97▲33Pasco County, FLFL674,5164,963−44%

98▲9Macomb County, MIMI886,2214,923−61%

99▼6Anderson County, SCSC219,9304,916−37%

100▲11York County, PAPA473,1974,861−45%

101▼5Anne Arundel County, MDMD603,3804,853−54%

102▲14Cumberland County, MEME317,2224,839−54%

103▼36Westmoreland County, PAPA349,3244,789−58%

104▲9Larimer County, COCO377,2924,781−38%

105▼23Sullivan County, TNTN163,7594,702−37%

106▼6Butler County, PAPA200,1694,670−46%

107▼24Ventura County, CACA830,8514,664−61%

108▲46Cleveland County, OKOK303,9734,650−10%

109▲30DuPage County, ILIL934,2984,537−60%

110▲32Volusia County, FLFL606,5734,527−53%

111▼12Lancaster County, PAPA563,1594,524−54%

112▼14Polk County, FLFL874,7904,516−62%

113▲7Virginia Beach, VAVA453,7374,514−58%

114▼4Chesterfield County, VAVA397,1484,511−50%

115▼1Henrico County, VAVA342,7754,509−43%

116▲45Ada County, IDID546,1414,507−45%

117▲26Baldwin County, ALAL267,7614,450−23%

118▼27New Hanover County, NCNC245,9594,420−55%

119▼34Union County, NCNC267,6744,401−47%

120▲17Greene County, MOMO309,2864,357−35%

121▲2Montgomery County, OHOH539,5984,279−52%

122▲4Plymouth County, MAMA546,8294,275−72%

123▼21Essex County, MAMA826,6534,253−71%

124▼7Randolph County, NCNC149,5164,222+5%

125▲39Philadelphia County, PAPA1,574,2814,219−57%

126▲46Clackamas County, OROR426,2804,200−59%

127▼2Summit County, OHOH538,3764,186−59%

128▼10Fresno County, CACA1,035,4564,171−54%

129▲29Yavapai County, AZAZ252,5524,140−23%

130▲6Mobile County, ALAL411,6584,120−59%

131▼82Horry County, SCSC427,5514,114−47%

132▼23Escambia County, FLFL333,8344,035−48%

133▲11Shelby County, ALAL238,5524,000−45%

134▼7Worcester County, MAMA888,5023,993−72%

135▲3Alamance County, NCNC186,1773,972−38%

136▼35Pulaski County, ARAR404,6113,907−55%

137▲19Sarasota County, FLFL479,9583,902−53%

138▲19Norfolk County, MAMA739,7493,882−75%

139▲6Polk County, IAIA516,5463,882−42%

140▲40San Francisco County, CACA826,0793,866−54%

141▲65Thurston County, WAWA304,2613,862−41%

142▼1Cherokee County, GAGA299,2733,817−49%

143▼24Cumberland County, NCNC338,4733,815−61%

144▼12Orange County, NCNC152,4983,786−46%

145▼5District of Columbia, DCDC693,6453,785−36%

146▼18Baltimore County, MDMD847,6503,780−67%

147▲15Kitsap County, WAWA283,3743,771−53%

148▲2Johnston County, NCNC256,4483,767−9%

149▲37Hillsborough County, NHNH433,4153,762−60%

150▲26San Joaquin County, CACA823,8153,761−45%

151▲2Loudoun County, VAVA449,7493,758−42%

152▼44Durham County, NCNC347,2403,745−51%

153▲6Rockingham County, NHNH324,0773,733−52%

154▲19Erie County, NYNY946,7413,703−64%

155▲11Sumner County, TNTN215,5383,665−38%

156▲40Clay County, MOMO265,0323,658−28%

157▲8Placer County, CACA442,0813,647−46%

158▼53Cabarrus County, NCNC249,7253,644−54%

159▲26Seminole County, FLFL491,8843,636−57%

160Capitol Planning Region, CTCT994,1153,625–

161▼40Blount County, TNTN143,8203,619−53%

162▼38Boulder County, COCO328,5603,610−54%

163▼32Rowan County, NCNC155,0963,574−41%

164▼13Washoe County, NVNV509,3863,572−60%

165▲14Brunswick County, NCNC174,7023,568−21%

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

167▲4Suffolk County, NYNY1,546,0903,561−78%

168▼34Kern County, CACA927,0683,535−64%

169▼20Leon County, FLFL299,0483,526−52%

170▼2Douglas County, COCO399,3963,489−47%

171▼24Haywood County, NCNC63,3693,488−32%

172▼5Kanawha County, WVWV172,3813,459−49%

173▲14Kent County, MIMI675,2323,455−61%

174▲108Aiken County, SCSC181,5153,376−7%

175▼20Monroe County, NYNY750,5063,323−66%

176▼30Delaware County, PAPA580,9373,306−67%

177▼14Douglas County, NENE606,4603,303−61%

178▲44Hamilton County, ININ387,0363,296−26%

179▲12Washington County, TNTN141,1993,288−30%

180▼28Stark County, OHOH373,7713,273−58%

181▲52Jackson County, OROR221,7953,251−43%

182▲29Lake County, FLFL456,0683,248−47%

183▲150York County, MEME222,4343,163−54%

184▲16Honolulu County, HIHI988,7033,162−53%

185▲3Ramsey County, MNMN541,6233,138−42%

186▲76Pinal County, AZAZ539,3803,069−47%

187▲48Marion County, OROR355,7773,055−51%

188▲46Chatham County, GAGA311,8553,043−30%

189▼54Fort Bend County, TXTX975,1913,034−46%

190▲26Alachua County, FLFL290,0283,012−52%

191▼13Cumberland County, PAPA277,2702,980−55%

192▲2St. Charles County, MOMO426,4992,973−57%

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

194▲23Westchester County, NYNY1,015,7432,958−56%

195▲3Berkeley County, SCSC274,6662,945−32%

196▲68Washtenaw County, MIMI370,2142,917−57%

197▲56Suffolk County, MAMA791,8912,907−60%

198▼29Beaver County, PAPA166,0322,894−57%

199▲52Hays County, TXTX304,3902,893−29%

200▲19Richmond, VAVA237,2572,889−34%

201▼26Okaloosa County, FLFL221,8102,886−35%

202▼10Santa Barbara County, CACA442,0652,878−60%

203▼43Prince William County, VAVA502,9662,865−58%

204▲82Frederick County, MDMD302,8832,862−49%

205▼12Anchorage, AKAK287,1552,859−57%

206▼24Adams County, COCO554,6682,853−56%

207▼33Dane County, WIWI590,3752,837−52%

208▼9Catawba County, NCNC170,1722,820−43%

209▼12Galveston County, TXTX372,2072,818−52%

210▲15Ocean County, NJNJ673,7462,812−62%

211▼34East Baton Rouge Parish, LALA456,1802,806−67%

212▲8Moore County, NCNC110,6192,806−27%

213▲94Bradley County, TNTN115,4652,790−16%

214▼66Sevier County, TNTN101,3422,775−34%

215▼1Lubbock County, TXTX328,9062,772−55%

216▼9Pickens County, SCSC139,1982,745−51%

217▼14Weld County, COCO378,4262,742−39%

218▲25Chesapeake, VAVA255,3322,735−44%

219▼17Forsyth County, GAGA282,8052,719−31%

220▲146Yolo County, CACA224,4102,708−34%

221Pitt County, NCNC182,9362,706−36%

222▲129Warren County, OHOH257,1812,690−20%

223▼28Lake County, ILIL719,3392,681−66%

224▲26Burlington County, NJNJ481,4392,680−58%

225▼55Manatee County, FLFL468,2002,676−54%

226▼22New Castle County, DEDE588,0262,671−71%

227▼22San Mateo County, CACA743,5682,661−64%

228▲75Morris County, NJNJ524,2512,646−55%

229▲13McLennan County, TXTX272,0202,639−46%

230▲1Marin County, CACA253,6942,628−54%

231▲42Clay County, FLFL239,5932,622−45%

232▲22Davis County, UTUT381,2272,621−33%

233▲24San Luis Obispo County, CACA282,3672,618−62%

234▼2Butler County, OHOH400,1282,606−55%

235▼25Benton County, ARAR332,5542,603−38%

236▼6Santa Cruz County, CACA258,8522,594−48%

237▼8Bell County, TXTX402,2482,581−55%

238▲30Solano County, CACA455,3762,580−51%

239▲33Genesee County, MIMI401,0932,578−62%

240▲70Douglas County, OROR111,9512,573−20%

241▲5Davidson County, NCNC180,1822,572−45%

242▼58Onslow County, NCNC217,1752,561−41%

243▼17Washington County, ARAR271,2132,557−44%

244▲26Milwaukee County, WIWI924,2162,548−52%

245▲14Tuscaloosa County, ALAL241,3682,543−43%

246▼18Whatcom County, WAWA236,3922,531−55%

247▲14Kane County, ILIL525,7572,525−57%

248▼59Rankin County, MSMS162,1812,503−55%

249▼2Wilson County, TNTN175,0332,483−27%

250▼37Will County, ILIL712,2532,480−68%

251▼70Erie County, PAPA265,8322,473−64%

252▼40Brazoria County, TXTX419,0802,467−56%

253▼26Howard County, MDMD339,1832,467−41%

254▲12Deschutes County, OROR213,0722,455−45%

255▲38Comal County, TXTX209,1662,446−22%

256▲107Penobscot County, MEME157,9672,443−65%

257▼42Marion County, FLFL442,6602,423−62%

258▲68Dorchester County, SCSC178,3972,420−23%

259▼23Beaufort County, SCSC204,4332,416−40%

260▼22Franklin County, PAPA160,6522,412−43%

261▼53St. Johns County, FLFL346,3282,397−48%

262▲39Madison County, ILIL263,1102,389−47%

263▲29Bay County, FLFL204,4792,387−48%

264▲12Onondaga County, NYNY466,5842,383−69%

265▲46Clermont County, OHOH216,9772,377−23%

266▼65Lee County, ALAL189,8812,362−45%

267▼19Santa Rosa County, FLFL211,1152,355−55%

268▼1Delaware County, OHOH242,0322,349−33%

269▼30Lawrence County, PAPA83,9112,341−55%

270▲61Allen County, ININ402,3292,331−45%

271▲94Parker County, TXTX184,7672,330−35%

272▼16Collier County, FLFL417,1312,330−62%

273▲39Hanover County, VAVA116,4232,313−38%

274Mesa County, COCO162,8452,299−35%

275▲14Arlington County, VAVA243,9312,294−57%

276▲18DeSoto County, MSMS197,9182,279−47%

277▼68St. Tammany Parish, LALA279,1082,265−45%

278▼20Dauphin County, PAPA293,3512,265−58%

279▲12Kootenai County, IDID191,8642,265−41%

280▲28Camden County, NJNJ535,7992,261−62%

281▼21Monmouth County, NJNJ651,0352,260−74%

282▲142Jefferson County, MOMO233,1322,247−33%

283▲40Greene County, OHOH174,3222,239−32%

284▲76Albemarle County, VAVA118,3562,237−44%

285▼10Montgomery County, TNTN249,9352,210−36%

286▼8Smith County, TXTX252,5492,209−49%

287▼47Stanislaus County, CACA557,7192,207−67%

288▼36Stafford County, VAVA170,8032,205−20%

289▼26Lucas County, OHOH423,3472,204−50%

290▼66Hall County, GAGA226,5682,184−32%

291▼47Watauga County, NCNC54,7862,183−33%

292▼47Brazos County, TXTX249,0882,158−58%

293▲22Mohave County, AZAZ228,1022,138−51%

294▲5Lorain County, OHOH323,2192,137−57%

295▲9Orleans Parish, LALA362,1542,128−20%

296▲10Dakota County, MNMN457,7102,116−52%

297▼42Anderson County, TNTN82,0662,116−35%

298▲84Berkeley County, WVWV139,5222,105−16%

299▲15Benton County, WAWA221,7222,095−32%

300▲13Berks County, PAPA440,0722,060−54%

301▼60Harrison County, MSMS217,1362,053−55%

302▼119Harnett County, NCNC150,1372,051−58%

303▼19Rutherford County, NCNC65,7452,049−34%

304▼33Lancaster County, SCSC114,2962,044−34%

305▼24Jackson County, NCNC45,0392,039−32%

306▲16Humboldt County, CACA131,6472,033−46%

307▲54Madison County, MSMS116,2982,024−17%

308▲21Queens County, NYNY2,358,1822,018−56%

309▲43Bristol County, MAMA593,6401,989−73%

310▲135Ellis County, TXTX240,8671,983−36%

311▼93Mercer County, PAPA107,8601,979−61%

312▼24Roanoke County, VAVA97,1501,973−52%

313▲49Missoula County, MTMT123,5131,972−38%

314▼77Nassau County, NYNY1,398,9391,965−78%

315▼50McHenry County, ILIL317,7511,950−52%

316▲29Charlotte County, FLFL217,2121,947−40%

317▼34Butte County, CACA209,2111,943−69%

318▲87Linn County, IAIA232,0281,931−44%

319▲27Baltimore, MDMD569,9971,911−53%

320▲20Licking County, OHOH185,5641,908−42%

321▲11Bergen County, NJNJ977,0261,906−73%

322▲91Strafford County, NHNH135,0431,898−38%

323▲33Sarpy County, NENE208,3031,893−18%

324▲34Calcasieu Parish, LALA208,4661,892−38%

325▲53Alexandria, VAVA160,6621,889−48%

326▼39Norfolk, VAVA231,0131,887−53%

327▲95Boone County, KYKY145,3161,884−10%

328▲13Lake County, OHOH232,2171,882−62%

329▲14Nueces County, TXTX352,9921,879−61%

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

331▼51Columbia County, GAGA169,1891,868−21%

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

333▲39St. Louis, MOMO278,1441,865−38%

334▼39Boone County, MOMO191,7461,859−59%

335▼37Clarke County, GAGA129,9211,852−41%

336▲57Santa Fe County, NMNM156,9071,851−37%

337▲96Rockingham County, VAVA89,3161,848+39%

338▲124Lauderdale County, ALAL97,1351,844−31%

339▲121Rockingham County, NCNC94,1951,841−12%

340▲51Monterey County, CACA433,7291,822−70%

341▲96Trumbull County, OHOH198,9721,820−50%

342▲2Sangamon County, ILIL194,1701,819−56%

343▼9Coweta County, GAGA160,2401,813−31%

344▲105St. Clair County, ILIL250,7081,804−41%

345▲70Kennebec County, MEME129,0671,793−62%

346▼29Caddo Parish, LALA224,2261,792−64%

347▲10Madison County, TNTN100,7901,791−38%

348▼99El Dorado County, CACA192,3231,787−60%

349▲58Gloucester County, NJNJ312,6381,787−60%

350▼53Lancaster County, NENE334,0491,784−61%

351▲124Paulding County, GAGA190,9961,777−31%

352▲1Jackson County, MSMS147,6661,772−50%

353▲33Hampden County, MAMA464,3381,760−71%

354▲96Albany County, NYNY321,2251,755−57%

355▼5Montgomery County, ALAL225,8911,753−58%

356▲60Gallatin County, MTMT128,7401,751−12%

357▼19Sussex County, DEDE277,1401,751−43%

358▼168Florence County, SCSC138,5041,747−70%

359▲55Citrus County, FLFL171,6661,747−47%

360▼70Miami-Dade County, FLFL2,802,0291,738−71%

361▲45Harford County, MDMD266,4461,731−66%

362▼139Augusta County, VAVA78,9401,729−51%

363▲35Skagit County, WAWA132,9751,724−34%

364▼15Muscogee County, GAGA202,1711,719−47%

365▲25Monongalia County, WVWV107,9911,711−51%

366▲72Canyon County, IDID275,1231,702−43%

367▼31Providence County, RIRI678,1791,700−74%

368▼91Kalamazoo County, MIMI263,7951,697−60%

369▲60Shasta County, CACA181,6481,693−62%

370▲371Boyd County, KYKY47,7511,681+43%

371▼53Centre County, PAPA157,3931,677−46%

372▲76El Paso County, TXTX877,8581,674−55%

373▲4Stanly County, NCNC68,8301,670−1%

374▲54Prince George's County, MDMD970,3741,667−64%

375▼48Carteret County, NCNC70,4691,666−37%

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

377▼98Hinds County, MSMS211,8881,638−66%

378▼62Lamar County, MSMS67,4031,634−1%

379▲78Putnam County, TNTN86,6121,633−14%

380▼1Taylor County, TXTX150,0771,633−52%

381▲123Dutchess County, NYNY300,7081,632−61%

382▼34Oconee County, SCSC83,7751,629−43%

383▼55Burke County, NCNC88,6551,628−56%

384▲100Floyd County, GAGA101,3781,627−30%

385▲11Grayson County, TXTX153,6131,621−40%

386▲48Roane County, TNTN57,3951,619−28%

387▲23Indiana County, PAPA82,8781,607−56%

388▼51Weber County, UTUT278,1741,607−49%

389▼22Merrimack County, NHNH158,0781,605−63%

390▼10Macon County, NCNC39,2321,588−27%

391▲532Union County, GAGA27,8591,588+92%

392▲255Tuolumne County, CACA53,1601,587+3%

393▲8Cabell County, WVWV91,1831,582−50%

394▲96Bibb County, GAGA157,5561,582−33%

395▲7Kenton County, KYKY175,7791,581−56%

396▼22Maury County, TNTN118,1311,575−20%

397▼88Jefferson County, TXTX254,3211,575−60%

398▼74Canadian County, OKOK187,1891,568−20%

399▲22Northampton County, PAPA324,4111,567−54%

400▼25St. Joseph County, ININ272,8611,564−61%

401▲177Hernando County, FLFL221,7011,562−52%

402▼38Wilkes County, NCNC66,2331,561−30%

403▼61Sumter County, FLFL157,7721,559−17%

404▼135Ingham County, MIMI289,7091,555−67%

405▲15Yellowstone County, MTMT172,6921,554−49%

406▼101Lake County, ININ504,6121,551−67%

407▲86Limestone County, ALAL122,9281,545+15%

408▼123Barnstable County, MAMA233,5391,543−67%

409▲38Vanderburgh County, ININ181,9951,536−44%

410▼90Fairfield County, OHOH169,7521,535−40%

411▼26Mahoning County, OHOH224,7061,530−59%

412▼28Tulare County, CACA485,1461,530−46%

413▲172Cowlitz County, WAWA114,8851,530−49%

414▼2Linn County, OROR132,8431,523−51%

415▼115Caldwell County, NCNC81,1051,520−39%

416▼24Wood County, WVWV82,3851,517−28%

417▲55Livingston County, MIMI197,3151,517−63%

418▼49Indian River County, FLFL172,7991,515−57%

419▼84St. Lucie County, FLFL402,4491,513−59%

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

421▼96Lincoln County, NCNC98,6541,508−47%

422▼51Jefferson Parish, LALA431,3981,500−60%

423▲23Middlesex County, NJNJ883,3351,500−69%

424▲71Atlantic County, NJNJ278,6571,498−46%

425▲290Sebastian County, ARAR130,6411,493−42%

426▲6Winnebago County, ILIL283,6741,491−53%

427▲14Medina County, OHOH185,0251,489−50%

428▲12Chittenden County, VTVT169,1151,485−60%

429▲32Pueblo County, COCO169,2771,483−39%

430▼36McDowell County, NCNC45,1981,479−43%

431▼4Saratoga County, NYNY241,3431,472−60%

432▲27Washington County, UTUT213,6701,469−30%

433▲45Ouachita Parish, LALA158,5421,465−56%

434▲5Carter County, TNTN57,3611,459−44%

435▲205Houston County, GAGA178,2141,451−47%

436▲103Johnson County, TXTX218,0481,448−54%

437▼61Waukesha County, WIWI417,2101,443−60%

438▲262Kent County, DEDE194,7861,435−53%

439▼30Ottawa County, MIMI308,4591,433−52%

440▼36Champaign County, ILIL209,9721,429−51%

441▼94Warren County, KYKY149,3751,422−52%

442▼69Jefferson County, TNTN60,0241,415−25%

443▲43Shawnee County, KSKS178,6071,414−67%

444▲186Washington County, VTVT59,6521,410−22%

445▼45Laurens County, SCSC71,8481,407−43%

446▲9Lee County, NCNC70,2581,406−34%

447▲104Loudon County, TNTN63,7641,405−37%

448▲8Midland County, TXTX187,8551,405−46%

449▼90Randall County, TXTX152,3511,405−50%

450▼95Montgomery County, VAVA98,4341,403−59%

451▲19Cass County, MOMO115,8591,402−42%

452▲60Fayette County, GAGA125,1561,399−58%

453▼99Greenwood County, SCSC70,3791,398−51%

454▲28Gregg County, TXTX126,0951,394−36%

455▲33Johnson County, ININ174,2621,393−43%

456▼117Morgan County, ALAL126,4831,392−56%

457▼32Clark County, OHOH135,3401,390−51%

458▲85Rockwall County, TXTX140,7381,390−18%

459▼36Matanuska-Susitna, AKAK118,6661,388−46%

460▼8Crawford County, PAPA81,7921,385−58%

461▼8Kershaw County, SCSC73,1661,385−18%

462▲195Scott County, IAIA175,2591,383−41%

463▲265Floyd County, ININ82,1531,373+3%

464▲1Porter County, ININ176,0491,373−51%

465▲41Greene County, TNTN73,8311,368−37%

466▲74Douglas County, KSKS120,9201,362−49%

467▼59Carroll County, MDMD176,6771,358−56%

468▲23Elmore County, ALAL91,5771,343−53%

469▲4Peoria County, ILIL178,5531,343−54%

470▲13Hawkins County, TNTN59,5591,342−28%

471▼90Pender County, NCNC72,1111,340−48%

472▲27Sumter County, SCSC105,0671,333−41%

473▲43Frederick County, VAVA99,9551,332−25%

474▲194York County, VAVA71,3741,325−37%

475▼9Martin County, FLFL166,2721,324−61%

476▲41Clark County, ININ130,4511,316−21%

477▲25Sandoval County, NMNM159,5651,316−48%

478▼48Jasper County, MOMO127,4281,315−51%

479▼25Anoka County, MNMN381,6051,312−55%

480▼85Madison County, KYKY101,6961,309−53%

481▲133Transylvania County, NCNC34,2111,307−52%

482▲53Faulkner County, ARAR133,9791,301−50%

483▲40Tuscarawas County, OHOH92,3731,301−30%

484▼21Washington County, VAVA53,8981,295−52%

485▼8St. Clair County, MIMI160,4861,292−64%

486▲51Niagara County, NYNY208,9121,292−54%

487▲60Mitchell County, NCNC15,0621,290−6%

488▼169Chatham County, NCNC85,1111,278−55%

489▲72Ohio County, WVWV40,4961,275−16%

490▼11Hardin County, TXTX58,7231,270−13%

491▲1Lehigh County, PAPA384,3831,267−64%

492▲118Garland County, ARAR99,6951,266−56%

493▲43Yamhill County, OROR110,0241,265−49%

494▼91Calhoun County, ALAL115,8341,261−48%

495▲99Richland County, OHOH124,8931,260−52%

496▼54Victoria County, TXTX92,6561,257−16%

497▼108Lee County, MSMS83,7311,256−43%

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

499▲30Bastrop County, TXTX118,9081,252−12%

500▲62Platte County, MOMO114,4001,251−46%

SHOWING 1–500 OF 3,090

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Download CSV (full list, 3,090 rows)

UPDATED 2026-09-11 · 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).