| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 11.4% | Lackawanna Trail School District / 8,561 |
| 2. | 10.3% | Lake-Lehman School District / 16,293 |
| 3. | 9.7% | Mountain View School District / 8,221 |
| 4. | 9.6% | Dallas School District / 20,142 |
| 5. | 8.6% | Lakeland School District / 12,366 |
| 6. | 8.3% | Tunkhannock Area School District / 19,039 |
| 7. | 8.2% | Northwest Area School District / 9,164 |
| 8. | 8.2% | Abington Heights School District / 23,464 |
| 9. | 8.2% | Riverside School District / 11,936 |
| 10. | 7.8% | Old Forge School District / 8,520 |
| 11. | 7.8% | Hanover Area School District / 15,363 |
| 12. | 7.1% | Wyoming Valley West School District / 41,880 |
| 13. | 6.9% | Mid Valley School District / 14,844 |
| 14. | 6.8% | Scranton School District / 72,459 |
| 15. | 6.8% | Wilkes-Barre Area School District / 59,914 |
| 16. | 6.5% | Northern Lehigh School District / 13,535 |
| 17. | 6.4% | Valley View School District / 17,729 |
| 18. | 6.2% | Northeast Bradford School District / 5,661 |
| 19. | 6.1% | Blue Ridge School District / 7,499 |
| 20. | 5.9% | Elk Lake School District / 7,400 |
| 21. | 5.8% | North Pocono School District / 19,875 |
| 22. | 5.7% | Greater Nanticoke Area School District / 18,016 |
| 23. | 5.7% | Tussey Mountain School District / 6,689 |
| 24. | 5.6% | Central Cambria School District / 13,831 |
| 25. | 5.6% | Western Wayne School District / 16,604 |
| 26. | 5.5% | Crestwood School District / 19,494 |
| 27. | 5.3% | Wyoming Area School District / 19,854 |
| 28. | 5.2% | North Schuylkill School District / 17,384 |
| 29. | 4.7% | Saint Clair Area School District / 6,638 |
| 30. | 4.7% | Williams Valley School District / 7,094 |
| 31. | 4.6% | West Middlesex Area School District / 7,302 |
| 32. | 4.5% | Dunmore School District / 13,977 |
| 33. | 4.5% | Montrose Area School District / 11,724 |
| 34. | 4.4% | Pittston Area School District / 27,656 |
| 35. | 4.4% | Forest City Regional School District / 5,280 |
| 35. | 4.4% | Weatherly Area School District / 5,419 |
| 37. | 4.4% | Brentwood Borough School District / 9,615 |
| 38. | 4.2% | Wyalusing Area School District / 8,173 |
| 39. | 4.1% | Susquehanna Community School District / 5,195 |
| 40. | 4.1% | Tamaqua Area School District / 15,941 |
| 41. | 4.1% | Wellsboro Area School District / 11,207 |
| 42. | 4.0% | Benton Area School District / 5,248 |
| 43. | 4.0% | Minersville Area School District / 9,063 |
| 43. | 4.0% | Twin Valley School District / 22,474 |
| 45. | 3.9% | Bloomsburg Area School District / 18,627 |
| 46. | 3.9% | Pottsville Area School District / 19,528 |
| 47. | 3.9% | Troy Area School District / 11,009 |
| 48. | 3.7% | Galeton Area School District / 3,045 |
| 49. | 3.7% | Camp Hill School District / 7,396 |
| 49. | 3.7% | Danville Area School District / 18,271 |
| 51. | 3.7% | Blue Mountain School District / 20,067 |
| 51. | 3.7% | Pen Argyl Area School District / 12,626 |
| 53. | 3.6% | Central Columbia School District / 15,171 |
| 53. | 3.6% | Salisbury Township School District / 13,940 |
| 55. | 3.5% | Bangor Area School District / 23,221 |
| 56. | 3.5% | Shamokin Area School District / 20,361 |
| 57. | 3.3% | Mahanoy Area School District / 12,440 |
| 57. | 3.3% | Berwick Area School District / 21,630 |
| 59. | 3.3% | Purchase Line School District / 7,415 |
| 60. | 3.2% | Eastern York School District / 19,814 |
| 61. | 3.2% | Southern Columbia Area School District / 9,956 |
| 62. | 3.1% | Neshannock Township School District / 9,264 |
| 63. | 3.1% | South Butler County School District / 20,056 |
| 64. | 3.1% | Laurel School District / 8,266 |
| 64. | 3.1% | Carbondale Area School District / 11,313 |
| 64. | 3.1% | Beaver Area School District / 14,502 |
| 67. | 3.0% | Ferndale Area School District / 5,249 |
| 68. | 3.0% | Towanda Area School District / 10,754 |
| 69. | 3.0% | South Eastern School District / 20,084 |
| 70. | 2.9% | Penns Manor Area School District / 6,201 |
| 70. | 2.9% | Shanksville-Stonycreek School District / 3,046 |
| 70. | 2.9% | Panther Valley School District / 13,080 |
| 73. | 2.9% | Saucon Valley School District / 16,888 |
| 74. | 2.8% | Conemaugh Valley School District / 6,601 |
| 74. | 2.8% | Brownsville Area School District / 16,646 |
| 76. | 2.8% | Wyomissing Area School District / 12,542 |
| 77. | 2.8% | Shenango Area School District / 8,395 |
| 77. | 2.8% | Cumberland Valley School District / 52,242 |
| 79. | 2.8% | Riverside Beaver County School District / 10,825 |
| 80. | 2.8% | Shenandoah Valley School District / 8,195 |
| 80. | 2.8% | Sharpsville Area School District / 7,408 |
| 80. | 2.8% | Mohawk Area School District / 10,443 |
| 83. | 2.8% | Parkland School District / 53,237 |
| 84. | 2.7% | Quaker Valley School District / 12,341 |
| 85. | 2.7% | Catasauqua Area School District / 11,315 |
| 86. | 2.7% | West Mifflin Area School District / 22,003 |
| 87. | 2.7% | Northern York County School District / 20,729 |
| 87. | 2.7% | Selinsgrove Area School District / 21,530 |
| 87. | 2.7% | Northwestern Lehigh School District / 14,896 |
| 90. | 2.7% | Palisades School District / 15,071 |
| 91. | 2.7% | Schuylkill Haven Area School District / 8,398 |
| 92. | 2.6% | Oley Valley School District / 13,261 |
| 92. | 2.6% | Susquenita School District / 14,583 |
| 94. | 2.6% | Bellefonte Area School District / 24,167 |
| 94. | 2.6% | Somerset Area School District / 20,997 |
| 94. | 2.6% | Wilmington Area School District / 11,382 |
| 97. | 2.6% | Blacklick Valley School District / 5,248 |
| 97. | 2.6% | Northampton Area School District / 42,341 |
| 99. | 2.5% | Nazareth Area School District / 27,383 |
| 99. | 2.5% | Mercer Area School District / 10,564 |
| 101. | 2.5% | East Penn School District / 52,860 |
| 102. | 2.5% | Mechanicsburg Area School District / 27,957 |
| 103. | 2.5% | Governor Mifflin School District / 30,368 |
| 104. | 2.5% | Avonworth School District / 9,439 |
| 105. | 2.5% | West Allegheny School District / 19,461 |
| 106. | 2.5% | Northern Tioga School District / 14,721 |
| 106. | 2.5% | Wilson School District / 37,010 |
| 108. | 2.5% | Upper Saint Clair School District / 18,815 |
| 109. | 2.5% | Jim Thorpe Area School District / 13,167 |
| 109. | 2.5% | Commodore Perry School District / 4,216 |
| 111. | 2.5% | South Williamsport Area School District / 8,953 |
| 111. | 2.5% | Southern Lehigh School District / 21,004 |
| 111. | 2.5% | Southern Tioga School District / 15,212 |
| 111. | 2.5% | Frazier School District / 8,481 |
| 115. | 2.4% | Daniel Boone Area School District / 20,363 |
| 115. | 2.4% | Crawford Central School District / 29,720 |
| 117. | 2.4% | Belle Vernon Area School District / 19,562 |
| 118. | 2.4% | West Shore School District / 60,838 |
| 119. | 2.4% | Pine Grove Area School District / 11,208 |
| 120. | 2.4% | Harmony Area School District / 2,452 |
| 120. | 2.4% | Clearfield Area School District / 18,845 |
| 120. | 2.4% | Reynolds School District / 10,167 |
| 120. | 2.4% | Kennett Consolidated School District / 25,888 |
| 124. | 2.4% | Octorara Area School District / 17,877 |
| 125. | 2.4% | Owen J. Roberts School District / 32,099 |
| 126. | 2.4% | Bethlehem-Center School District / 8,450 |
| 127. | 2.3% | New Castle Area School District / 25,401 |
| 128. | 2.3% | Quakertown Community School District / 34,758 |
| 128. | 2.3% | Cameron County School District / 5,334 |
| 130. | 2.3% | Shikellamy School District / 22,182 |
| 130. | 2.3% | Forest Hills School District / 12,798 |
| 130. | 2.3% | United School District / 8,364 |
| 130. | 2.3% | Austin Area School District / 1,219 |
| 130. | 2.3% | Lewisburg Area School District / 18,168 |
| 135. | 2.3% | Bryn Athyn School District / 1,063 |
| 135. | 2.3% | Hermitage School District / 16,259 |
| 135. | 2.3% | Richland School District / 14,471 |
| 135. | 2.3% | Millville Area School District / 5,239 |
| 139. | 2.3% | Jamestown Area School District / 4,292 |
| 139. | 2.3% | Schuylkill Valley School District / 15,576 |
| 141. | 2.3% | Hampton Township School District / 17,205 |
| 142. | 2.2% | Phoenixville Area School District / 30,602 |
| 143. | 2.2% | Lower Dauphin School District / 24,283 |
| 144. | 2.2% | Westmont Hilltop School District / 12,963 |
| 145. | 2.2% | Hollidaysburg Area School District / 27,533 |
| 146. | 2.2% | Gateway School District / 31,108 |
| 147. | 2.2% | Lehighton Area School District / 18,226 |
| 147. | 2.2% | Name N/A / 5,696 |
| 149. | 2.2% | Peters Township School District / 19,896 |
| 149. | 2.2% | Lakeview School District / 8,427 |
| 151. | 2.1% | Ellwood City Area School District / 14,072 |
| 151. | 2.1% | Penn-Trafford School District / 25,576 |
| 153. | 2.1% | Loyalsock Township School District / 10,706 |
| 154. | 2.1% | Chestnut Ridge School District / 10,890 |
| 155. | 2.1% | Greensburg Salem School District / 27,122 |
| 156. | 2.1% | Slippery Rock Area School District / 20,745 |
| 156. | 2.1% | Carlisle Area School District / 36,480 |
| 158. | 2.1% | Portage Area School District / 6,510 |
| 158. | 2.1% | Conemaugh Township Area School District / 8,213 |
| 158. | 2.1% | Northgate School District / 12,919 |
| 161. | 2.1% | Mount Carmel Area School District / 11,972 |
| 162. | 2.1% | Central Dauphin School District / 86,525 |
| 163. | 2.1% | Souderton Area School District / 43,655 |
| 163. | 2.1% | Rose Tree Media School District / 36,830 |
| 165. | 2.1% | Perkiomen Valley School District / 35,779 |
| 165. | 2.1% | Avon Grove School District / 28,919 |
| 165. | 2.1% | Wallingford-Swarthmore School District / 21,180 |
| 165. | 2.1% | Ligonier Valley School District / 15,423 |
| 169. | 2.0% | Shade-Central City School District / 4,124 |
| 169. | 2.0% | Pennridge School District / 44,862 |
| 171. | 2.0% | Indiana Area School District / 32,464 |
| 171. | 2.0% | Bethlehem Area School District / 114,321 |
| 173. | 2.0% | Riverview School District / 9,145 |
| 173. | 2.0% | Keystone Oaks School District / 20,731 |
| 175. | 2.0% | Warwick School District / 30,094 |
| 175. | 2.0% | East Pennsboro Area School District / 19,739 |
| 175. | 2.0% | Palmerton Area School District / 13,598 |
| 178. | 2.0% | Tyrone Area School District / 12,803 |
| 178. | 2.0% | Easton Area School District / 61,224 |
| 180. | 2.0% | Huntingdon Area School District / 19,931 |
| 181. | 2.0% | Bald Eagle Area School District / 12,847 |
| 181. | 2.0% | Curwensville Area School District / 7,247 |
| 181. | 2.0% | Pleasant Valley School District / 34,426 |
| 184. | 2.0% | New Brighton Area School District / 11,370 |
| 185. | 1.9% | Athens Area School District / 14,381 |
| 186. | 1.9% | Eastern Lancaster County School District / 31,101 |
| 187. | 1.9% | Exeter Township School District / 26,761 |
| 188. | 1.9% | Newport School District / 7,820 |
| 189. | 1.9% | State College Area School District / 85,823 |
| 189. | 1.9% | Ephrata Area School District / 32,385 |
| 191. | 1.9% | Ridley School District / 39,431 |
| 191. | 1.9% | Northern Cambria School District / 7,997 |
| 191. | 1.9% | Derry Township School District / 21,993 |
| 191. | 1.9% | Wallenpaupack Area School District / 24,729 |
| 191. | 1.9% | Upper Dublin School District / 26,030 |
| 196. | 1.9% | Williamsburg Community School District / 3,550 |
| 196. | 1.9% | Norwin School District / 34,151 |
| 196. | 1.9% | Millersburg Area School District / 6,554 |
| 199. | 1.9% | Littlestown Area School District / 14,641 |
| 200. | 1.8% | North East School District / 10,858 |
| 200. | 1.8% | Central Bucks School District / 111,592 |
| 202. | 1.8% | Wilson Area School District / 15,237 |
| 202. | 1.8% | Smethport Area School District / 5,944 |
| 202. | 1.8% | Sayre Area School District / 7,938 |
| 202. | 1.8% | North Star School District / 8,840 |
| 202. | 1.8% | Whitehall-Coplay School District / 29,983 |
| 207. | 1.8% | Hatboro-Horsham School District / 31,985 |
| 207. | 1.8% | Brookville Area School District / 11,668 |
| 207. | 1.8% | Marion Center Area School District / 10,865 |
| 207. | 1.8% | Mars Area School District / 16,541 |
| 211. | 1.8% | Manheim Township School District / 35,568 |
| 211. | 1.8% | Uniontown Area School District / 25,762 |
| 211. | 1.8% | Spring-Ford Area School District / 43,547 |
| 214. | 1.8% | Laurel Highlands School District / 24,561 |
| 214. | 1.8% | Name N/A / 12,224 |
| 216. | 1.8% | Moshannon Valley School District / 9,252 |
| 216. | 1.8% | Salisbury-Elk Lick School District / 2,956 |
| 216. | 1.8% | Wayne Highlands School District / 23,056 |
| 219. | 1.8% | Yough School District / 16,970 |
| 219. | 1.8% | Clarion-Limestone Area School District / 7,447 |
| 219. | 1.8% | Centennial School District / 49,371 |
| 222. | 1.8% | Williamsport Area School District / 42,762 |
| 222. | 1.8% | Downingtown Area School District / 67,341 |
| 224. | 1.7% | Bedford Area School District / 16,414 |
| 225. | 1.7% | Great Valley School District / 30,718 |
| 225. | 1.7% | Franklin Area School District / 16,374 |
| 225. | 1.7% | Charleroi School District / 12,208 |
| 228. | 1.7% | Boyertown Area School District / 44,900 |
| 229. | 1.7% | Seneca Valley School District / 45,887 |
| 229. | 1.7% | East Lycoming School District / 10,126 |
| 231. | 1.7% | South Park School District / 13,993 |
| 232. | 1.7% | Trinity Area School District / 25,809 |
| 232. | 1.7% | Steel Valley School District / 17,000 |
| 232. | 1.7% | West Chester Area School District / 107,367 |
| 232. | 1.7% | Springfield School District / 25,563 |
| 236. | 1.7% | Oxford Area School District / 25,000 |
| 236. | 1.7% | Cranberry Area School District / 9,366 |
| 238. | 1.7% | Ringgold School District / 26,493 |
| 238. | 1.7% | Hempfield School District / 46,327 |
| 240. | 1.7% | Greater Johnstown School District / 28,689 |
| 241. | 1.6% | Western Beaver County School District / 5,451 |
| 241. | 1.6% | Philipsburg-Osceola Area School District / 15,151 |
| 241. | 1.6% | Bellwood-Antis School District / 8,684 |
| 241. | 1.6% | Elizabeth Forward School District / 17,993 |
| 245. | 1.6% | Cambria Heights School District / 9,884 |
| 246. | 1.6% | Meyersdale Area School District / 7,117 |
| 246. | 1.6% | Manheim Central School District / 22,868 |
| 246. | 1.6% | Hazleton Area School District / 66,370 |
| 249. | 1.6% | Big Spring School District / 20,056 |
| 250. | 1.6% | Carlynton School District / 14,674 |
| 250. | 1.6% | Coatesville Area School District / 58,571 |
| 250. | 1.6% | Punxsutawney Area School District / 20,895 |
| 253. | 1.6% | Greenville Area School District / 11,046 |
| 253. | 1.6% | Windber Area School District / 8,764 |
| 255. | 1.6% | Upper Moreland Township School District / 24,355 |
| 255. | 1.6% | North Penn School District / 96,512 |
| 257. | 1.6% | Unionville-Chadds Ford School District / 23,543 |
| 257. | 1.6% | Butler Area School District / 55,579 |
| 259. | 1.6% | Fleetwood Area School District / 16,325 |
| 259. | 1.6% | Blairsville-Saltsburg School District / 12,805 |
| 259. | 1.6% | Penn-Delco School District / 27,024 |
| 259. | 1.6% | Baldwin-Whitehall School District / 34,069 |
| 263. | 1.6% | Penncrest School District / 25,315 |
| 263. | 1.6% | South Side Area School District / 7,038 |
| 265. | 1.5% | Hopewell Area School District / 18,400 |
| 265. | 1.5% | Juniata Valley School District / 5,495 |
| 265. | 1.5% | Radnor Township School District / 31,049 |
| 268. | 1.5% | Sullivan County School District / 6,219 |
| 268. | 1.5% | Montoursville Area School District / 13,342 |
| 268. | 1.5% | Penns Valley Area School District / 11,434 |
| 271. | 1.5% | Grove City Area School District / 16,589 |
| 271. | 1.5% | Upper Dauphin Area School District / 8,649 |
| 271. | 1.5% | Port Allegany School District / 5,946 |
| 274. | 1.5% | Deer Lakes School District / 14,659 |
| 274. | 1.5% | California Area School District / 11,016 |
| 274. | 1.5% | West Greene School District / 5,236 |
| 277. | 1.5% | Corry Area School District / 14,384 |
| 277. | 1.5% | Clairton City School District / 7,884 |
| 279. | 1.5% | West Branch Area School District / 8,131 |
| 279. | 1.5% | Northern Potter School District / 4,001 |
| 279. | 1.5% | Montgomery Area School District / 7,493 |
| 279. | 1.5% | Conrad Weiser Area School District / 19,153 |
| 283. | 1.5% | Greater Latrobe School District / 30,481 |
| 283. | 1.5% | Fort Cherry School District / 9,668 |
| 283. | 1.5% | Upper Perkiomen School District / 21,968 |
| 286. | 1.5% | Altoona Area School District / 59,728 |
| 286. | 1.5% | Fairview School District / 10,158 |
| 286. | 1.5% | Delaware Valley School District / 30,831 |
| 286. | 1.5% | Chichester School District / 25,084 |
| 286. | 1.5% | Freeport Area School District / 11,731 |
| 291. | 1.5% | North Allegheny School District / 47,037 |
| 291. | 1.5% | Stroudsburg Area School District / 33,646 |
| 291. | 1.5% | Hempfield Area School District / 50,136 |
| 291. | 1.5% | Tuscarora School District / 18,909 |
| 295. | 1.5% | York Suburban School District / 21,342 |
| 295. | 1.5% | Highlands School District / 20,125 |
| 295. | 1.5% | Donegal School District / 19,394 |
| 298. | 1.4% | Gettysburg Area School District / 28,371 |
| 298. | 1.4% | Halifax Area School District / 7,308 |
| 298. | 1.4% | Mifflin County School District / 42,863 |
| 298. | 1.4% | Pennsbury School District / 69,714 |
| 302. | 1.4% | Susquehanna Township School District / 22,934 |
| 302. | 1.4% | Canton Area School District / 6,066 |
| 302. | 1.4% | Harbor Creek School District / 16,823 |
| 305. | 1.4% | Columbia Borough School District / 10,076 |
| 305. | 1.4% | Central Greene School District / 16,187 |
| 305. | 1.4% | South Western School District / 26,362 |
| 305. | 1.4% | Pine-Richland School District / 19,906 |
| 305. | 1.4% | Southern York County School District / 20,604 |
| 305. | 1.4% | South Allegheny School District / 12,046 |
| 305. | 1.4% | Middletown Area School District / 18,497 |
| 305. | 1.4% | Tredyffrin-Easttown School District / 39,482 |
| 313. | 1.4% | Springfield Township School District / 18,990 |
| 313. | 1.4% | Lampeter-Strasburg School District / 22,718 |
| 313. | 1.4% | Colonial School District / 42,024 |
| 313. | 1.4% | General McLane School District / 17,796 |
| 313. | 1.4% | Penn Hills School District / 44,401 |
| 318. | 1.4% | Bethel Park School District / 32,192 |
| 319. | 1.4% | Mifflinburg Area School District / 15,810 |
| 319. | 1.4% | Southeast Delco School District / 30,190 |
| 321. | 1.4% | Conneaut School District / 18,255 |
| 321. | 1.4% | Bristol Township School District / 53,999 |
| 323. | 1.4% | Muncy School District / 7,428 |
| 323. | 1.4% | Oil City Area School District / 15,174 |
| 325. | 1.4% | Canon-McMillan School District / 31,171 |
| 326. | 1.3% | Derry Area School District / 17,359 |
| 327. | 1.3% | McKeesport Area School District / 33,952 |
| 327. | 1.3% | Valley Grove School District / 6,554 |
| 327. | 1.3% | Neshaminy School District / 77,501 |
| 327. | 1.3% | Muhlenberg School District / 21,982 |
| 331. | 1.3% | Abington School District / 56,990 |
| 332. | 1.3% | Fox Chapel Area School District / 29,082 |
| 332. | 1.3% | Milton Area School District / 16,045 |
| 334. | 1.3% | Pottstown School District / 21,390 |
| 334. | 1.3% | South Fayette Township School District / 13,062 |
| 334. | 1.3% | Central Fulton School District / 6,174 |
| 334. | 1.3% | Upper Merion Area School District / 32,283 |
| 334. | 1.3% | Interboro School District / 23,717 |
| 334. | 1.3% | Allentown City School District / 107,225 |
| 334. | 1.3% | Plum Borough School District / 26,263 |
| 341. | 1.3% | Northern Bedford County School District / 6,653 |
| 341. | 1.3% | Kutztown Area School District / 19,304 |
| 341. | 1.3% | Haverford Township School District / 48,348 |
| 341. | 1.3% | Jersey Shore Area School District / 18,173 |
| 345. | 1.3% | Oswayo Valley School District / 3,196 |
| 345. | 1.3% | Pocono Mountain School District / 60,617 |
| 347. | 1.3% | Dallastown Area School District / 39,360 |
| 348. | 1.3% | Fairfield Area School District / 8,040 |
| 349. | 1.2% | Union Area School District / 5,427 |
| 350. | 1.2% | Forest Area School District / 7,378 |
| 350. | 1.2% | Apollo-Ridge School District / 9,528 |
| 352. | 1.2% | DuBois Area School District / 31,793 |
| 352. | 1.2% | Chartiers Valley School District / 28,274 |
| 352. | 1.2% | Elizabethtown Area School District / 30,004 |
| 352. | 1.2% | Warren County School District / 38,164 |
| 356. | 1.2% | Chambersburg Area School District / 60,795 |
| 356. | 1.2% | Pottsgrove School District / 20,993 |
| 358. | 1.2% | North Hills School District / 37,544 |
| 358. | 1.2% | Brockway Area School District / 7,013 |
| 358. | 1.2% | Central York School District / 33,349 |
| 361. | 1.2% | Fort LeBoeuf School District / 13,536 |
| 361. | 1.2% | Ambridge Area School District / 23,776 |
| 361. | 1.2% | Northeastern York School District / 21,775 |
| 364. | 1.2% | Bermudian Springs School District / 13,515 |
| 364. | 1.2% | Tulpehocken Area School District / 12,959 |
| 364. | 1.2% | Cornwall-Lebanon School District / 31,474 |
| 367. | 1.2% | Shaler Area School District / 39,158 |
| 367. | 1.2% | New Hope-Solebury School District / 10,759 |
| 367. | 1.2% | Mt. Lebanon School District / 30,803 |
| 370. | 1.2% | Juniata County School District / 22,596 |
| 370. | 1.2% | Wattsburg Area School District / 10,215 |
| 372. | 1.2% | Albert Gallatin Area School District / 23,966 |
| 372. | 1.2% | Franklin Regional School District / 22,018 |
| 374. | 1.1% | Rochester Area School District / 7,228 |
| 375. | 1.1% | Dover Area School District / 25,226 |
| 375. | 1.1% | Solanco School District / 30,664 |
| 375. | 1.1% | Everett Area School District / 9,996 |
| 378. | 1.1% | Woodland Hills School District / 48,871 |
| 378. | 1.1% | Armstrong School District / 43,269 |
| 378. | 1.1% | New Kensington-Arnold School District / 18,999 |
| 381. | 1.1% | Marple Newtown School District / 35,321 |
| 381. | 1.1% | Spring Cove School District / 13,117 |
| 383. | 1.1% | Warrior Run School District / 16,930 |
| 384. | 1.1% | Carmichaels Area School District / 6,927 |
| 385. | 1.1% | Connellsville Area School District / 36,480 |
| 385. | 1.1% | Palmyra Area School District / 21,012 |
| 385. | 1.1% | Millcreek Township School District / 51,874 |
| 385. | 1.1% | Monessen City School District / 8,095 |
| 385. | 1.1% | Cheltenham Township School District / 36,228 |
| 390. | 1.1% | Wissahickon School District / 36,365 |
| 390. | 1.1% | Greenwood School District / 5,306 |
| 392. | 1.1% | Redbank Valley School District / 8,128 |
| 392. | 1.1% | Morrisville Borough School District / 9,664 |
| 392. | 1.1% | Montour School District / 27,299 |
| 392. | 1.1% | Tri-Valley School District / 6,338 |
| 392. | 1.1% | Allegheny Valley School District / 9,880 |
| 392. | 1.1% | Sharon City School District / 14,999 |
| 398. | 1.1% | Jeannette City School District / 9,893 |
| 399. | 1.0% | Coudersport Area School District / 5,387 |
| 399. | 1.0% | Penn Manor School District / 39,680 |
| 401. | 1.0% | Burrell School District / 14,148 |
| 401. | 1.0% | Big Beaver Falls Area School District / 13,911 |
| 401. | 1.0% | Pittsburgh School District / 316,773 |
| 401. | 1.0% | Cocalico School District / 22,401 |
| 405. | 1.0% | Antietam School District / 7,491 |
| 405. | 1.0% | Moon Area School District / 25,495 |
| 407. | 1.0% | Waynesboro Area School District / 30,500 |
| 408. | 1.0% | West Perry School District / 17,920 |
| 408. | 1.0% | Red Lion Area School District / 36,768 |
| 408. | 1.0% | Otto-Eldred School District / 4,752 |
| 408. | 1.0% | Union City Area School District / 7,210 |
| 408. | 1.0% | Norristown Area School District / 59,294 |
| 413. | 1.0% | Titusville Area School District / 14,426 |
| 414. | 1.0% | Methacton School District / 34,430 |
| 414. | 1.0% | Brandywine Heights Area School District / 13,066 |
| 414. | 1.0% | Allegheny-Clarion Valley School District / 5,675 |
| 414. | 1.0% | Keystone School District / 7,746 |
| 418. | 1.0% | Conestoga Valley School District / 30,966 |
| 418. | 1.0% | Fannett-Metal School District / 4,729 |
| 418. | 1.0% | Mount Pleasant Area School District / 18,365 |
| 418. | 1.0% | Forbes Road School District / 3,139 |
| 422. | 0.9% | Blackhawk School District / 17,381 |
| 422. | 0.9% | Hamburg Area School District / 18,358 |
| 422. | 0.9% | East Stroudsburg Area School District / 45,591 |
| 425. | 0.9% | Eastern Lebanon County School District / 20,159 |
| 425. | 0.9% | Lebanon School District / 24,910 |
| 425. | 0.9% | Garnet Valley School District / 28,433 |
| 428. | 0.9% | Council Rock School District / 73,110 |
| 429. | 0.9% | Keystone Central School District / 35,221 |
| 430. | 0.9% | Upper Darby School District / 86,549 |
| 431. | 0.9% | York City School District / 40,301 |
| 432. | 0.9% | Bensalem Township School District / 58,472 |
| 432. | 0.9% | Moniteau School District / 9,503 |
| 434. | 0.9% | Midd-West School District / 16,731 |
| 434. | 0.9% | Turkeyfoot Valley Area School District / 2,759 |
| 436. | 0.9% | Freedom Area School District / 11,459 |
| 436. | 0.9% | Erie City School District / 103,664 |
| 438. | 0.8% | Lower Merion School District / 61,676 |
| 439. | 0.8% | Cornell School District / 6,740 |
| 439. | 0.8% | Lancaster School District / 69,269 |
| 439. | 0.8% | Glendale School District / 5,250 |
| 442. | 0.8% | Berlin Brothersvalley School District / 5,809 |
| 442. | 0.8% | Clarion Area School District / 9,216 |
| 444. | 0.8% | Kane Area School District / 7,489 |
| 444. | 0.8% | West York Area School District / 22,425 |
| 444. | 0.8% | Northern Lebanon School District / 17,699 |
| 444. | 0.8% | McGuffey School District / 13,339 |
| 448. | 0.8% | Steelton-Highspire School District / 8,259 |
| 448. | 0.8% | Avella Area School District / 4,137 |
| 448. | 0.8% | Spring Grove Area School District / 26,964 |
| 451. | 0.8% | Leechburg Area School District / 6,025 |
| 451. | 0.8% | Mount Union Area School District / 9,189 |
| 453. | 0.8% | Pequea Valley School District / 20,462 |
| 453. | 0.8% | Upper Adams School District / 11,168 |
| 455. | 0.8% | Kiski Area School District / 28,346 |
| 455. | 0.8% | East Allegheny School District / 15,339 |
| 457. | 0.8% | Southern Huntingdon County School District / 8,411 |
| 458. | 0.7% | Jenkintown School District / 4,340 |
| 459. | 0.7% | Shippensburg Area School District / 27,053 |
| 459. | 0.7% | Homer-Center School District / 6,531 |
| 461. | 0.7% | Burgettstown Area School District / 10,019 |
| 462. | 0.7% | Jefferson-Morgan School District / 6,067 |
| 463. | 0.7% | West Jefferson Hills School District / 18,413 |
| 463. | 0.7% | Rockwood Area School District / 5,850 |
| 463. | 0.7% | Washington School District / 16,486 |
| 466. | 0.7% | Reading School District / 80,845 |
| 467. | 0.7% | Hanover Public School District / 14,995 |
| 467. | 0.7% | Annville-Cleona School District / 12,628 |
| 469. | 0.7% | Girard School District / 11,106 |
| 470. | 0.6% | Line Mountain School District / 8,881 |
| 471. | 0.6% | North Clarion County School District / 4,552 |
| 472. | 0.6% | Conewago Valley School District / 25,276 |
| 473. | 0.6% | Ridgway Area School District / 7,043 |
| 474. | 0.5% | Penn Cambria School District / 17,950 |
| 474. | 0.5% | Southeastern Greene School District / 5,092 |
| 476. | 0.5% | Claysburg-Kimmel School District / 5,708 |
| 477. | 0.5% | Bradford Area School District / 20,908 |
| 477. | 0.5% | Union School District / 4,332 |
| 477. | 0.5% | Southern Fulton School District / 5,495 |
| 480. | 0.5% | Greencastle-Antrim School District / 18,048 |
| 480. | 0.5% | Bentworth School District / 8,467 |
| 482. | 0.5% | St. Marys Area School District / 19,393 |
| 482. | 0.5% | Wilkinsburg Borough School District / 17,266 |
| 484. | 0.5% | South Middleton School District / 14,227 |
| 484. | 0.5% | Bristol Borough School District / 9,698 |
| 486. | 0.4% | Karns City Area School District / 10,438 |
| 486. | 0.4% | Midland Borough School District / 2,870 |
| 488. | 0.4% | Southmoreland School District / 14,839 |
| 489. | 0.4% | Harrisburg City School District / 47,368 |
| 490. | 0.4% | William Penn School District / 40,997 |
| 491. | 0.4% | Iroquois School District / 7,098 |
| 492. | 0.3% | Northwestern School District / 11,794 |
| 493. | 0.3% | Farrell Area School District / 6,418 |
| 494. | 0.3% | Philadelphia City School District / 1,531,112 |
| 494. | 0.3% | Johnsonburg Area School District / 4,963 |
| 494. | 0.3% | Lower Moreland Township School District / 12,218 |
| 494. | 0.3% | Chester-Upland School District / 44,199 |
| 498. | 0.3% | Chartiers-Houston School District / 8,637 |
| 499. | 0.3% | Aliquippa School District / 10,721 |
| 500. | 0.2% | Duquesne City School District / 6,752 |
| 501. | 0.2% | Sto-Rox School District / 12,240 |
Please note that we only rank locations with 'Welsh as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Welsh as First Ancestry Population Percentage' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
