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RANKING · 2020 CENSUS · 500 SHOWN OF 3,134

Largest Irish population, US counties · 2020

US counties ranked by the number of residents who are Irish ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV.

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RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
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RANKPLACESTATEPOPIRISH POPULATIONVS 2000
1001Delaware County, OKOK41,9105,002
1002Boyd County, KYKY47,7514,993
1003Gibson County, TNTN51,7794,993
1004Greenbrier County, WVWV31,5784,991
1005Clatsop County, OROR40,9264,990
1006Shenandoah County, VAVA45,8394,982
1007Waupaca County, WIWI51,4614,982
1008Bedford County, PAPA47,4804,977
1009Auglaize County, OHOH45,9094,967
1010Franklin County, NCNC82,0374,962
1011Bowie County, TXTX92,6964,961
1012Coos County, NHNH31,3434,960
1013Des Moines County, IAIA38,0774,959
1014Gilmer County, GAGA33,8944,951
1015McDowell County, NCNC45,1984,946
1016Stevens County, WAWA49,6684,943
1017Grady County, OKOK59,1284,932
1018Cheatham County, TNTN42,7784,931
1019Perry County, PAPA46,8064,929
1020Anderson County, TXTX59,8054,929
1021Kay County, OKOK43,4904,928
1022Otero County, NMNM70,3684,927
1023Newaygo County, MIMI51,6224,925
1024Lawrence County, MOMO39,4014,922
1025Dyer County, TNTN36,3204,917
1026Ottawa County, OHOH39,4814,910
1027Stephens County, OKOK44,3104,904
1028Garvin County, OKOK26,3774,901
1029Pontotoc County, OKOK38,5284,899
1030Franklin County, VAVA55,5264,898
1031Fremont County, COCO50,0394,891
1032Branch County, MIMI45,9934,878
1033Shelby County, OHOH48,0654,878
1034Lee County, IAIA32,3064,867
1035Laclede County, MOMO36,9434,864
1036Latah County, IDID41,8424,847
1037Dunn County, WIWI46,2234,846
1038Kittitas County, WAWA48,8034,830
1039Lincoln Parish, LALA48,3604,813
1040Wilkes County, NCNC66,2334,813
1041Surry County, NCNC72,2874,804
1042Lafayette County, MSMS59,5974,801
1043Lawrence County, TNTN46,9144,793
1044Franklin County, ILIL36,9164,791
1045Burnet County, TXTX57,0154,784
1046Alcorn County, MSMS34,5694,780
1047Portsmouth, VAVA96,7774,759
1048Campbell County, WYWY48,1454,740
1049Green County, WIWI37,2274,736
1050Lee County, NCNC70,2584,733
1051Sanilac County, MIMI40,0834,722
1052Clinton County, PAPA37,8704,702
1053Bryan County, GAGA52,0624,698
1054Albany County, WYWY38,5584,690
1055Levy County, FLFL48,5204,687
1056Lincoln County, NENE33,3034,681
1057Upshur County, TXTX44,4104,681
1058Washington County, MEME31,3344,654
1059Okanogan County, WAWA45,2304,642
1060Pittsylvania County, VAVA59,4904,636
1061Hamblen County, TNTN68,8434,631
1062Stephenson County, ILIL43,2204,616
1063Polk County, WIWI45,8034,611
1064Pike County, KYKY54,7214,611
1065Meade County, KYKY30,6994,593
1066Bedford County, TNTN55,2734,576
1067Marion County, ILIL36,3824,576
1068Darke County, OHOH51,5204,565
1069Jasper County, ININ33,8944,560
1070Douglas County, WIWI43,9904,555
1071Webster County, MOMO43,0544,554
1072Wyoming County, PAPA25,7904,547
1073Noble County, ININ47,9374,539
1074Louisa County, VAVA42,9244,532
1075Clark County, KYKY37,8884,531
1076Randolph County, WVWV26,8824,519
1077Dare County, NCNC38,2454,514
1078Pettis County, MOMO44,2544,511
1079Mower County, MNMN40,9714,502
1080Cameron County, TXTX433,9464,491
1081Marshall County, WVWV29,1594,484
1082Itasca County, MNMN45,4044,482
1083Kendall County, TXTX53,2894,480
1084Montgomery County, KSKS30,1774,460
1085Culpeper County, VAVA57,6664,454
1086White County, GAGA29,8024,446
1087Preble County, OHOH40,6644,440
1088Lamoille County, VTVT26,2944,410
1089Garrett County, MDMD28,3704,408
1090Woodford County, ILIL38,1114,406
1091Franklin County, MEME30,8244,405
1092Webster County, IAIA36,8384,385
1093Kauai County, HIHI73,4004,378
1094Marion County, IAIA34,1924,376
1095Jefferson County, WAWA33,9704,373
1096Miller County, ARAR42,3574,371
1097Orange County, VTVT30,0024,369
1098Whitman County, WAWA48,5124,362
1099Upshur County, WVWV23,7584,362
1100Terrebonne Parish, LALA104,1634,356
1101Oconee County, GAGA44,8934,348
1102Polk County, MOMO33,6044,338
1103Jefferson County, ILIL36,1474,332
1104Calumet County, WIWI53,9824,329
1105Wilson County, TXTX56,1394,324
1106Brown County, TXTX38,7114,321
1107Douglas County, WAWA46,4734,318
1108Huntington County, ININ37,2244,316
1109Jones County, MSMS66,4964,310
1110Darlington County, SCSC62,8884,304
1111Gordon County, GAGA61,7014,304
1112Elko County, NVNV54,8154,302
1113San Benito County, CACA70,0824,291
1114Otter Tail County, MNMN61,0414,283
1115Oneida County, WIWI38,1314,278
1116Lauderdale County, MSMS70,3174,262
1117Clay County, MNMN67,7344,259
1118Independence County, ARAR38,7854,255
1119Logan County, ILIL27,1824,248
1120Fremont County, WYWY39,4644,233
1121Granville County, NCNC61,4214,231
1122Greenwood County, SCSC70,3794,220
1123Rockdale County, GAGA98,4164,207
1124Harrison County, ININ40,4374,199
1125Williams County, OHOH36,5494,197
1126Bureau County, ILIL32,5104,195
1127Gloucester County, VAVA40,0974,193
1128Caledonia County, VTVT30,4144,165
1129Fannin County, GAGA26,1114,156
1130Barron County, WIWI46,4844,154
1131Coffee County, ALAL56,9534,132
1132Montrose County, COCO44,5914,102
1133Iowa County, WIWI23,9514,100
1134Campbell County, VAVA55,6294,099
1135Dunklin County, MOMO26,8554,097
1136Beltrami County, MNMN47,0554,083
1137Iroquois County, ILIL26,1504,078
1138Hopkins County, KYKY45,1274,077
1139Caroline County, MDMD34,1164,074
1140Claiborne County, TNTN33,2294,068
1141Charlottesville, VAVA44,3884,066
1142DeKalb County, ININ44,5354,060
1143Henderson County, KYKY44,2554,059
1144Stone County, MOMO32,5034,055
1145Warren County, TNTN43,7174,053
1146Oktibbeha County, MSMS51,8964,052
1147Habersham County, GAGA50,4164,049
1148Cherokee County, OKOK49,1964,038
1149Stokes County, NCNC46,1264,036
1150McClain County, OKOK49,6474,036
1151Defiance County, OHOH38,2924,021
1152Cherokee County, TXTX53,3374,020
1153Monroe County, ILIL34,8404,012
1154Dodge County, NENE38,0574,008
1155Clare County, MIMI31,5433,996
1156Cowley County, KSKS34,3823,992
1157Muscatine County, IAIA41,8533,991
1158Preston County, WVWV34,0043,990
1159Jackson County, ININ47,3703,985
1160McIntosh County, OKOK19,7583,975
1161Wapello County, IAIA35,2103,959
1162Washington County, MOMO23,8103,947
1163Washington Parish, LALA44,9373,943
1164Howell County, MOMO40,7983,938
1165Marshall County, KYKY31,6593,923
1166Boyle County, KYKY31,6323,921
1167Charlevoix County, MIMI26,0363,910
1168Iron County, UTUT67,1413,901
1169Lewis County, NYNY26,4793,895
1170Elk County, PAPA29,9263,893
1171Union County, PAPA42,3133,883
1172Morgan County, ILIL32,5153,874
1173Lamar County, TXTX51,5033,872
1174Franklin County, KSKS26,2993,861
1175Okeechobee County, FLFL42,6083,847
1176Shelby County, ININ45,8823,845
1177Grant County, KYKY26,1813,843
1178Davie County, NCNC45,8553,842
1179Hocking County, OHOH27,5123,839
1180Murray County, GAGA41,6073,838
1181Fulton County, ILIL32,9013,829
1182Polk County, GAGA45,5143,828
1183Le Sueur County, MNMN29,4533,827
1184Emmet County, MIMI33,7753,823
1185Sweetwater County, WYWY41,2673,821
1186Wexford County, MIMI34,4453,809
1187Summit County, UTUT43,1413,806
1188Mississippi County, ARAR37,8283,795
1189Wakulla County, FLFL38,0893,794
1190Logan County, WVWV30,3753,790
1191Isanti County, MNMN44,3863,784
1192Steuben County, ININ34,7993,778
1193St. Charles Parish, LALA50,5863,776
1194Nicholas County, WVWV23,8483,773
1195Wabash County, ININ30,7133,771
1196Van Zandt County, TXTX66,1303,768
1197Liberty County, GAGA70,3133,767
1198Stoddard County, MOMO28,2843,766
1199Rhea County, TNTN34,8443,759
1200Tillamook County, OROR27,3843,756
1201Fannin County, TXTX39,2653,748
1202Knox County, ININ35,6523,742
1203Mineral County, WVWV26,7923,737
1204Juneau County, WIWI26,6493,730
1205Scotts Bluff County, NENE35,5863,726
1206Beauregard Parish, LALA36,6733,726
1207Dukes County, MAMA21,2193,716
1208Obion County, TNTN30,0673,708
1209Okmulgee County, OKOK37,2413,705
1210Cherokee County, SCSC58,2753,701
1211Macon County, NCNC39,2323,699
1212Hill County, TXTX39,5033,699
1213Jo Daviess County, ILIL21,5943,689
1214Morrow County, OHOH36,3053,674
1215Whitley County, KYKY37,2973,673
1216Navarro County, TXTX57,1813,673
1217Stanly County, NCNC68,8303,673
1218Powhatan County, VAVA32,5913,666
1219Delta County, COCO32,1783,664
1220Erath County, TXTX43,9113,663
1221Gratiot County, MIMI41,1903,658
1222Scott County, MOMO37,9753,652
1223King George County, VAVA29,6463,638
1224Breckinridge County, KYKY21,5033,634
1225Franklin County, TNTN45,5793,633
1226Carroll County, OHOH26,4753,631
1227Spalding County, GAGA70,7753,627
1228Cheboygan County, MIMI25,7933,619
1229Gallia County, OHOH29,0723,613
1230Teller County, COCO24,7563,613
1231Lumpkin County, GAGA36,1783,610
1232Calloway County, KYKY39,4213,609
1233Benton County, IAIA26,0043,609
1234Colbert County, ALAL59,4743,589
1235Cleburne County, ARAR25,6723,584
1236Campbell County, TNTN40,2903,583
1237Jefferson County, ININ33,2793,583
1238Marinette County, WIWI42,5743,583
1239Marion County, MOMO28,5253,579
1240Baker County, FLFL29,7373,576
1241Haralson County, GAGA33,0663,576
1242Crittenden County, ARAR46,2103,573
1243Otsego County, MIMI26,0803,573
1244Giles County, TNTN31,4333,573
1245Snyder County, PAPA39,6553,571
1246San Patricio County, TXTX72,0533,571
1247Boone County, IAIA26,7993,570
1248Juneau, AKAK31,6093,568
1249Delta County, MIMI36,5823,564
1250Chambers County, TXTX57,5943,563
1251Mercer County, OHOH42,7373,562
1252Curry County, NMNM46,6553,542
1253Lyon County, KSKS32,2663,538
1254Cooke County, TXTX44,4613,536
1255Hardin County, OHOH30,0723,535
1256Greene County, ININ31,1653,531
1257Saline County, ILIL22,7723,528
1258Tooele County, UTUT87,4613,526
1259McDonough County, ILIL25,9163,520
1260Jones County, IAIA21,2533,520
1261Pottawatomie County, KSKS27,1863,515
1262Medina County, TXTX56,8813,514
1263Chippewa County, MIMI36,0813,512
1264Botetourt County, VAVA34,1443,511
1265Crawford County, MOMO22,9293,510
1266Marshall County, ININ46,5993,499
1267Beaufort County, NCNC44,6703,486
1268Miami County, ININ34,4873,470
1269Manassas, VAVA44,3323,465
1270Madison County, GAGA32,9193,464
1271Vernon County, WIWI31,4433,462
1272Benton County, MNMN41,7443,456
1273Teton County, WYWY23,3333,455
1274Gibson County, ININ33,0913,455
1275Summit County, COCO31,5173,454
1276Union County, GAGA27,8593,440
1277Fayette County, TNTN45,0713,437
1278Nash County, NCNC99,3653,435
1279Suwannee County, FLFL48,1493,430
1280Marshall County, TNTN38,0713,426
1281Cass County, NENE27,6573,416
1282Valencia County, NMNM82,0133,411
1283Effingham County, ILIL34,5193,411
1284Brooke County, WVWV21,1423,410
1285Randolph County, MOMO24,5133,406
1286Lawrence County, SDSD29,4593,400
1287Wayne County, WVWV37,3093,397
1288Dale County, ALAL49,9123,393
1289Meade County, SDSD30,7113,390
1290Lincoln County, OKOK35,2783,377
1291Jackson County, NCNC45,0393,374
1292Henry County, TNTN32,8963,369
1293Oconto County, WIWI40,1953,368
1294Jackson County, OHOH32,8173,364
1295Hopkins County, TXTX39,0633,364
1296Nez Perce County, IDID42,9053,347
1297Woodford County, KYKY27,8833,346
1298Greenup County, KYKY35,2133,333
1299St. Bernard Parish, LALA45,6423,310
1300Steele County, MNMN37,4643,307
1301Marion County, TNTN29,8043,307
1302Meigs County, OHOH21,5873,295
1303Antrim County, MIMI24,6983,294
1304Yates County, NYNY24,5473,292
1305Prentiss County, MSMS25,2843,289
1306Dubois County, ININ44,0163,289
1307Transylvania County, NCNC34,2113,282
1308Ottawa County, OKOK30,4383,272
1309Adams County, NENE31,0713,269
1310Curry County, OROR22,6213,262
1311Tallapoosa County, ALAL40,9533,250
1312Putnam County, ININ37,8763,244
1313Barry County, MOMO36,2003,241
1314Pontotoc County, MSMS32,0963,235
1315Cherokee County, NCNC30,8303,232
1316Alexander County, NCNC36,9583,216
1317Dawson County, GAGA35,3653,207
1318Christian County, ILIL33,4433,201
1319Rowan County, KYKY24,4763,199
1320Daviess County, ININ34,2093,198
1321Lowndes County, MSMS57,3463,194
1322Llano County, TXTX23,3533,194
1323Imperial County, CACA181,4113,189
1324Buchanan County, IAIA20,8833,181
1325Yadkin County, NCNC38,3253,179
1326Winston County, ALAL23,8293,164
1327Sequoyah County, OKOK40,8423,163
1328Lenoir County, NCNC55,8373,157
1329Wilson County, NCNC81,1503,155
1330Marshall County, IAIA39,8903,153
1331Bradford County, FLFL28,3073,147
1332Churchill County, NVNV25,8513,142
1333Hampshire County, WVWV24,1053,134
1334Cocke County, TNTN37,8893,120
1335Randolph County, ARAR18,8763,102
1336Crawford County, WIWI15,9103,093
1337Whitley County, ININ35,0463,092
1338Vernon Parish, LALA45,0913,089
1339Coffee County, GAGA44,4073,085
1340Winchester, VAVA28,2723,085
1341Floyd County, KYKY34,4013,078
1342Poweshiek County, IAIA18,3683,077
1343Henry County, VAVA49,2423,073
1344Park County, WYWY31,1713,053
1345Madison County, NENE36,1063,047
1346Lafourche Parish, LALA95,5053,045
1347Wabasha County, MNMN21,5373,045
1348Hardin County, TNTN27,9833,044
1349Washington County, NENE21,3023,043
1350Washington County, IAIA22,6673,037
1351Brookings County, SDSD37,6353,033
1352Ray County, MOMO23,3983,028
1353Brown County, SDSD37,5613,026
1354Fayette County, OHOH28,5523,025
1355Isle of Wight County, VAVA41,3213,019
1356Palo Pinto County, TXTX30,7913,017
1357Grimes County, TXTX34,2523,012
1358Schuyler County, NYNY16,9243,009
1359Caldwell County, TXTX55,1503,006
1360Chaves County, NMNM63,3643,004
1361Henry County, MOMO22,6712,998
1362Ellis County, KSKS29,0752,996
1363Caroline County, VAVA34,4132,992
1364Waller County, TXTX69,8582,992
1365Miller County, MOMO25,8172,985
1366Gilchrist County, FLFL20,4882,985
1367Huron County, MIMI30,5302,984
1368Cass County, ININ37,8362,982
1369McLeod County, MNMN36,6312,979
1370Custer County, OKOK28,1752,979
1371Nicollet County, MNMN34,2732,978
1372Panola County, TXTX23,0182,977
1373Lafayette County, MOMO33,5312,975
1374Pike County, OHOH27,0612,970
1375Monroe County, MSMS33,3182,969
1376Geneva County, ALAL27,5542,968
1377Elbert County, COCO30,5342,965
1378Ripley County, ININ29,4342,964
1379Union County, MSMS28,4592,962
1380Baldwin County, GAGA44,0292,956
1381Barren County, KYKY45,6412,953
1382Hot Spring County, ARAR33,4512,948
1383Jackson County, IAIA19,2882,946
1384Anderson County, KYKY25,2252,945
1385Kent County, MDMD19,5652,944
1386Carlton County, MNMN36,7112,939
1387Montgomery County, ILIL28,0762,939
1388Mariposa County, CACA16,9182,938
1389Iosco County, MIMI25,2662,934
1390Morton County, NDND34,6012,933
1391Pulaski County, VAVA33,5862,930
1392Mason County, MIMI29,0402,925
1393Lee County, VAVA21,6422,925
1394Dorchester County, MDMD33,6282,920
1395Houston County, TXTX22,3162,919
1396Douglas County, MNMN40,1202,917
1397Klickitat County, WAWA24,3312,916
1398Platte County, NENE35,6492,912
1399Leelanau County, MIMI22,9822,889
1400Thomas County, GAGA46,3682,888
1401Clinton County, MOMO21,6612,885
1402Park County, MTMT18,2142,884
1403Caddo County, OKOK26,1302,884
1404Decatur County, ININ26,5762,878
1405Clinton County, ILIL37,1282,876
1406Routt County, COCO25,3292,875
1407Union County, OROR25,9002,872
1408Orleans County, VTVT27,6002,860
1409Mingo County, WVWV21,4552,858
1410Randolph County, ILIL29,9212,855
1411Russell County, ALAL58,8982,852
1412Covington County, ALAL37,9472,835
1413Roscommon County, MIMI23,9142,835
1414Graves County, KYKY37,0502,834
1415Mahaska County, IAIA21,8802,833
1416Henry County, OHOH27,5982,831
1417Morgan County, TNTN22,1602,825
1418Lake County, MTMT33,3922,823
1419Jackson County, WVWV27,4502,822
1420Fayette County, IAIA19,0472,811
1421Kandiyohi County, MNMN44,7202,809
1422Barbour County, WVWV15,4142,809
1423Bremer County, IAIA25,2962,806
1424Matagorda County, TXTX36,4632,803
1425Jersey County, ILIL21,1602,795
1426Dougherty County, GAGA82,6162,793
1427Currituck County, NCNC33,1582,790
1428Geary County, KSKS36,3382,782
1429Piscataquis County, MEME17,4092,780
1430Owen County, ININ21,8862,779
1431White County, ININ25,1642,776
1432Pine County, MNMN30,4722,772
1433Aransas County, TXTX26,1462,772
1434Osceola County, MIMI23,5162,771
1435Jennings County, ININ27,6222,768
1436Fluvanna County, VAVA28,9752,761
1437Atascosa County, TXTX53,5902,755
1438San Jacinto County, TXTX29,4882,752
1439Lassen County, CACA28,1172,751
1440Starke County, ININ23,4252,748
1441Gillespie County, TXTX28,5272,747
1442Saunders County, NENE23,7022,738
1443Houghton County, MIMI37,8422,731
1444Sumner County, KSKS22,3122,727
1445Shawano County, WIWI41,5602,725
1446Bosque County, TXTX18,9182,702
1447Plymouth County, IAIA25,6972,702
1448Delaware County, IAIA17,6742,701
1449Posey County, ININ24,9882,699
1450Lincoln County, TNTN36,8532,698
1451Fredericksburg, VAVA30,3932,696
1452Dade County, GAGA16,1542,696
1453McNairy County, TNTN26,2362,686
1454Gladwin County, MIMI26,0772,684
1455Jackson County, FLFL49,6292,674
1456Person County, NCNC40,6362,668
1457Pasquotank County, NCNC42,2012,666
1458Morgan County, COCO30,3062,658
1459Eddy County, NMNM62,5092,656
1460Jefferson County, KSKS18,2962,652
1461Leon County, TXTX16,8942,645
1462Elmore County, IDID29,4652,645
1463Door County, WIWI30,6162,643
1464Lincoln County, MTMT22,3282,642
1465Tift County, GAGA42,2542,637
1466Richland County, WIWI17,0362,632
1467Chesterfield County, SCSC44,7402,628
1468Madison County, NCNC22,5532,627
1469Polk County, NCNC20,5332,627
1470Alpena County, MIMI28,8532,621
1471Van Buren County, ARAR16,2382,618
1472Iberia Parish, LALA66,8462,618
1473Prince George County, VAVA43,9362,613
1474Stone County, ARAR12,7032,610
1475DeSoto County, FLFL37,0782,606
1476Cedar County, IAIA18,3592,598
1477Vernon County, MOMO19,9462,596
1478Mason County, WVWV24,7072,595
1479Polk County, ARAR19,4862,594
1480Mille Lacs County, MNMN27,7532,593
1481Vilas County, WIWI23,7612,592
1482Hoke County, NCNC56,9392,586
1483Bandera County, TXTX22,8762,586
1484Lafayette County, WIWI17,4782,582
1485Trinity County, TXTX14,3842,581
1486Taylor County, KYKY26,7632,581
1487Poinsett County, ARAR22,4832,574
1488Codington County, SDSD29,5622,572
1489Carroll County, TNTN29,2002,566
1490Chilton County, ALAL47,7082,565
1491Freeborn County, MNMN30,4402,564
1492Newton County, ININ14,1882,562
1493Williams County, NDND41,7672,561
1494Del Norte County, CACA26,4102,560
1495Smyth County, VAVA28,8822,557
1496Tate County, MSMS28,7252,556
1497Gunnison County, COCO17,4392,556
1498Izard County, ARAR14,4052,549
1499New Madrid County, MOMO15,0862,549
1500Tishomingo County, MSMS18,6392,547
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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES