| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 10.6% | Lackawanna Trail School District / 8,361 |
| 2. | 9.3% | Mountain View School District / 8,285 |
| 3. | 8.8% | Lake-Lehman School District / 16,708 |
| 4. | 8.8% | Dallas School District / 20,419 |
| 5. | 8.5% | Abington Heights School District / 23,647 |
| 6. | 8.4% | Lakeland School District / 12,493 |
| 7. | 8.1% | Old Forge School District / 8,374 |
| 8. | 7.8% | Greater Nanticoke Area School District / 18,842 |
| 9. | 7.6% | Hanover Area School District / 15,628 |
| 10. | 7.5% | Wyoming Valley West School District / 42,421 |
| 11. | 7.4% | Mid Valley School District / 15,241 |
| 12. | 7.4% | West Middlesex Area School District / 7,472 |
| 13. | 7.3% | Riverside School District / 11,892 |
| 14. | 6.9% | Tunkhannock Area School District / 19,104 |
| 15. | 6.8% | Northern Lehigh School District / 13,068 |
| 16. | 6.8% | Blue Ridge School District / 8,152 |
| 17. | 6.7% | Valley View School District / 18,187 |
| 18. | 6.7% | Northwest Area School District / 9,574 |
| 19. | 6.3% | Scranton School District / 76,065 |
| 20. | 5.9% | Wilkes-Barre Area School District / 59,972 |
| 21. | 5.8% | Elk Lake School District / 8,154 |
| 22. | 5.6% | North Pocono School District / 20,047 |
| 23. | 5.5% | Northeast Bradford School District / 5,920 |
| 24. | 5.2% | North Schuylkill School District / 17,040 |
| 25. | 5.0% | Crestwood School District / 19,680 |
| 26. | 5.0% | Montrose Area School District / 12,320 |
| 27. | 4.9% | Western Wayne School District / 18,324 |
| 28. | 4.8% | Wyoming Area School District / 19,449 |
| 29. | 4.8% | Blacklick Valley School District / 5,184 |
| 30. | 4.7% | Saint Clair Area School District / 6,799 |
| 31. | 4.6% | Dunmore School District / 14,092 |
| 31. | 4.6% | Tussey Mountain School District / 6,872 |
| 33. | 4.5% | Brentwood Borough School District / 9,711 |
| 34. | 4.5% | Wyalusing Area School District / 8,636 |
| 35. | 4.4% | Weatherly Area School District / 5,436 |
| 36. | 4.3% | Laurel School District / 8,196 |
| 37. | 4.3% | Minersville Area School District / 9,166 |
| 38. | 4.2% | Troy Area School District / 10,970 |
| 38. | 4.2% | Pittston Area School District / 27,834 |
| 40. | 4.2% | Danville Area School District / 18,613 |
| 41. | 4.0% | Central Cambria School District / 13,860 |
| 42. | 4.0% | Central Columbia School District / 15,367 |
| 43. | 3.9% | Tamaqua Area School District / 16,378 |
| 44. | 3.9% | Wellsboro Area School District / 11,439 |
| 45. | 3.9% | Galeton Area School District / 3,124 |
| 46. | 3.9% | Pen Argyl Area School District / 12,488 |
| 47. | 3.8% | Benton Area School District / 5,160 |
| 48. | 3.7% | Bloomsburg Area School District / 20,052 |
| 48. | 3.7% | Pottsville Area School District / 20,051 |
| 50. | 3.7% | South Butler County School District / 18,902 |
| 51. | 3.6% | Camp Hill School District / 7,829 |
| 51. | 3.6% | Bangor Area School District / 22,658 |
| 53. | 3.6% | Williams Valley School District / 7,422 |
| 54. | 3.5% | Forest City Regional School District / 5,560 |
| 54. | 3.5% | Twin Valley School District / 23,142 |
| 56. | 3.5% | Salisbury Township School District / 13,545 |
| 57. | 3.4% | United School District / 8,320 |
| 58. | 3.3% | Owen J. Roberts School District / 31,934 |
| 59. | 3.2% | Susquehanna Community School District / 5,309 |
| 60. | 3.2% | Lower Dauphin School District / 24,315 |
| 61. | 3.2% | Southern Columbia Area School District / 10,274 |
| 62. | 3.1% | Blue Mountain School District / 20,410 |
| 63. | 3.1% | Schuylkill Haven Area School District / 8,430 |
| 64. | 3.0% | Shanksville-Stonycreek School District / 2,910 |
| 65. | 3.0% | Phoenixville Area School District / 31,591 |
| 66. | 3.0% | Valley Grove School District / 6,771 |
| 66. | 3.0% | Reynolds School District / 9,973 |
| 68. | 3.0% | Harmony Area School District / 2,252 |
| 68. | 3.0% | Towanda Area School District / 10,664 |
| 70. | 2.9% | Riverside Beaver County School District / 10,520 |
| 70. | 2.9% | Wyomissing Area School District / 12,734 |
| 72. | 2.9% | Lewisburg Area School District / 19,039 |
| 72. | 2.9% | Northwestern Lehigh School District / 14,552 |
| 74. | 2.9% | Panther Valley School District / 13,074 |
| 75. | 2.9% | Shamokin Area School District / 20,697 |
| 76. | 2.9% | Berwick Area School District / 22,119 |
| 76. | 2.9% | Mohawk Area School District / 10,640 |
| 78. | 2.8% | Parkland School District / 53,681 |
| 79. | 2.8% | Derry Township School District / 24,030 |
| 80. | 2.8% | Carbondale Area School District / 11,217 |
| 80. | 2.8% | Catasauqua Area School District / 10,918 |
| 82. | 2.8% | Shenango Area School District / 7,977 |
| 82. | 2.8% | Penns Manor Area School District / 6,234 |
| 84. | 2.7% | Governor Mifflin School District / 30,776 |
| 85. | 2.7% | Bellefonte Area School District / 25,249 |
| 86. | 2.7% | Northern York County School District / 20,662 |
| 86. | 2.7% | Southern Lehigh School District / 20,633 |
| 88. | 2.7% | Avonworth School District / 10,018 |
| 89. | 2.6% | Southern Tioga School District / 15,602 |
| 90. | 2.6% | Saucon Valley School District / 16,623 |
| 91. | 2.6% | Neshannock Township School District / 9,528 |
| 91. | 2.6% | Cumberland Valley School District / 53,263 |
| 93. | 2.6% | Westmont Hilltop School District / 13,082 |
| 93. | 2.6% | Sharpsville Area School District / 7,762 |
| 95. | 2.6% | Lehighton Area School District / 17,883 |
| 96. | 2.6% | Athens Area School District / 14,637 |
| 96. | 2.6% | Northern Tioga School District / 14,714 |
| 96. | 2.6% | Daniel Boone Area School District / 20,669 |
| 99. | 2.6% | Purchase Line School District / 7,612 |
| 100. | 2.6% | Conemaugh Valley School District / 6,753 |
| 101. | 2.5% | Nazareth Area School District / 27,438 |
| 102. | 2.5% | Steel Valley School District / 16,718 |
| 103. | 2.5% | South Eastern School District / 19,685 |
| 103. | 2.5% | Moshannon Valley School District / 9,018 |
| 103. | 2.5% | Richland School District / 14,515 |
| 103. | 2.5% | Mechanicsburg Area School District / 28,023 |
| 107. | 2.5% | Jamestown Area School District / 4,533 |
| 108. | 2.5% | Belle Vernon Area School District / 18,856 |
| 108. | 2.5% | Shenandoah Valley School District / 8,060 |
| 110. | 2.5% | Newport School District / 7,946 |
| 110. | 2.5% | Mahanoy Area School District / 11,637 |
| 112. | 2.5% | Quakertown Community School District / 36,115 |
| 113. | 2.4% | Ferndale Area School District / 5,286 |
| 113. | 2.4% | Eastern York School District / 19,207 |
| 115. | 2.4% | Brownsville Area School District / 14,984 |
| 116. | 2.4% | Gateway School District / 31,647 |
| 116. | 2.4% | West Shore School District / 61,672 |
| 118. | 2.4% | West Allegheny School District / 19,871 |
| 118. | 2.4% | Wallingford-Swarthmore School District / 21,735 |
| 118. | 2.4% | Forest Hills School District / 12,774 |
| 121. | 2.4% | Loyalsock Township School District / 10,959 |
| 122. | 2.4% | Palmerton Area School District / 13,956 |
| 122. | 2.4% | Hampton Township School District / 18,055 |
| 124. | 2.4% | East Penn School District / 52,513 |
| 125. | 2.4% | Wilmington Area School District / 11,972 |
| 126. | 2.3% | Beaver Area School District / 14,777 |
| 126. | 2.3% | North Star School District / 9,172 |
| 128. | 2.3% | Rose Tree Media School District / 35,322 |
| 128. | 2.3% | New Castle Area School District / 24,743 |
| 130. | 2.3% | Oil City Area School District / 15,037 |
| 130. | 2.3% | Millville Area School District / 5,223 |
| 132. | 2.3% | Upper Saint Clair School District / 19,188 |
| 133. | 2.3% | Northampton Area School District / 41,449 |
| 133. | 2.3% | West Mifflin Area School District / 21,922 |
| 135. | 2.3% | Pleasant Valley School District / 33,771 |
| 136. | 2.3% | Huntingdon Area School District / 19,939 |
| 137. | 2.3% | Bethlehem-Center School District / 8,410 |
| 138. | 2.2% | Frazier School District / 8,306 |
| 139. | 2.2% | Mount Carmel Area School District / 12,529 |
| 139. | 2.2% | Elizabeth Forward School District / 18,139 |
| 139. | 2.2% | Conemaugh Township Area School District / 8,369 |
| 142. | 2.2% | Penn-Trafford School District / 25,802 |
| 143. | 2.2% | Susquenita School District / 14,777 |
| 143. | 2.2% | Warwick School District / 30,591 |
| 145. | 2.2% | Somerset Area School District / 21,052 |
| 146. | 2.2% | Crawford Central School District / 30,518 |
| 147. | 2.2% | Central Dauphin School District / 89,004 |
| 147. | 2.2% | Kennett Consolidated School District / 26,196 |
| 149. | 2.1% | Chichester School District / 24,200 |
| 150. | 2.1% | Wilson School District / 37,854 |
| 150. | 2.1% | Tredyffrin-Easttown School District / 40,018 |
| 152. | 2.1% | Selinsgrove Area School District / 22,383 |
| 153. | 2.1% | Austin Area School District / 1,213 |
| 154. | 2.1% | Brookville Area School District / 11,567 |
| 154. | 2.1% | Chestnut Ridge School District / 10,992 |
| 156. | 2.1% | Commodore Perry School District / 4,282 |
| 157. | 2.1% | Juniata Valley School District / 5,389 |
| 158. | 2.0% | Northern Potter School District / 4,221 |
| 159. | 2.0% | Riverview School District / 9,015 |
| 160. | 2.0% | South Williamsport Area School District / 9,224 |
| 161. | 2.0% | Quaker Valley School District / 13,478 |
| 162. | 2.0% | Slippery Rock Area School District / 20,311 |
| 162. | 2.0% | Marion Center Area School District / 10,490 |
| 164. | 2.0% | Mercer Area School District / 10,585 |
| 165. | 2.0% | Pine Grove Area School District / 11,559 |
| 165. | 2.0% | Carlynton School District / 14,502 |
| 167. | 2.0% | Portage Area School District / 6,445 |
| 167. | 2.0% | Ellwood City Area School District / 14,876 |
| 169. | 1.9% | East Pennsboro Area School District / 19,812 |
| 169. | 1.9% | Clearfield Area School District / 19,187 |
| 169. | 1.9% | Octorara Area School District / 17,792 |
| 169. | 1.9% | Eastern Lancaster County School District / 31,459 |
| 173. | 1.9% | Stroudsburg Area School District / 34,377 |
| 173. | 1.9% | Pennridge School District / 47,533 |
| 173. | 1.9% | Upper Moreland Township School District / 24,245 |
| 176. | 1.9% | Shikellamy School District / 22,335 |
| 177. | 1.9% | Schuylkill Valley School District / 14,909 |
| 177. | 1.9% | Easton Area School District / 62,149 |
| 177. | 1.9% | Keystone School District / 7,551 |
| 180. | 1.9% | Millersburg Area School District / 6,690 |
| 181. | 1.9% | Palisades School District / 15,236 |
| 181. | 1.9% | Unionville-Chadds Ford School District / 23,700 |
| 181. | 1.9% | Halifax Area School District / 7,370 |
| 184. | 1.8% | Trinity Area School District / 25,984 |
| 185. | 1.8% | Bald Eagle Area School District / 13,389 |
| 185. | 1.8% | Indiana Area School District / 32,652 |
| 187. | 1.8% | Perkiomen Valley School District / 36,601 |
| 187. | 1.8% | Ligonier Valley School District / 16,029 |
| 189. | 1.8% | Kutztown Area School District / 18,595 |
| 189. | 1.8% | Delaware Valley School District / 29,248 |
| 191. | 1.8% | Sayre Area School District / 8,108 |
| 191. | 1.8% | Hollidaysburg Area School District / 26,993 |
| 191. | 1.8% | California Area School District / 11,275 |
| 194. | 1.8% | Central Bucks School District / 112,467 |
| 194. | 1.8% | Williamsport Area School District / 42,476 |
| 196. | 1.8% | Bethlehem Area School District / 116,078 |
| 196. | 1.8% | Wilson Area School District / 15,198 |
| 198. | 1.8% | Canton Area School District / 6,292 |
| 198. | 1.8% | Clarion-Limestone Area School District / 8,197 |
| 198. | 1.8% | Mars Area School District / 18,203 |
| 198. | 1.8% | Seneca Valley School District / 46,231 |
| 198. | 1.8% | Williamsburg Community School District / 3,701 |
| 198. | 1.8% | Avon Grove School District / 29,201 |
| 204. | 1.8% | Freeport Area School District / 11,688 |
| 205. | 1.7% | Claysburg-Kimmel School District / 5,635 |
| 205. | 1.7% | Northeastern York School District / 22,577 |
| 207. | 1.7% | Bryn Athyn School District / 1,172 |
| 207. | 1.7% | Upper Perkiomen School District / 21,961 |
| 207. | 1.7% | Garnet Valley School District / 27,007 |
| 207. | 1.7% | Bellwood-Antis School District / 8,495 |
| 211. | 1.7% | Tyrone Area School District / 12,995 |
| 211. | 1.7% | Exeter Township School District / 26,754 |
| 213. | 1.7% | Upper Dublin School District / 25,606 |
| 213. | 1.7% | State College Area School District / 90,446 |
| 213. | 1.7% | Otto-Eldred School District / 4,390 |
| 216. | 1.7% | Souderton Area School District / 44,653 |
| 216. | 1.7% | Ephrata Area School District / 32,598 |
| 216. | 1.7% | Big Spring School District / 20,386 |
| 219. | 1.7% | Meyersdale Area School District / 7,141 |
| 219. | 1.7% | Cranberry Area School District / 9,364 |
| 221. | 1.7% | Muhlenberg School District / 23,118 |
| 221. | 1.7% | West Chester Area School District / 107,674 |
| 223. | 1.7% | Baldwin-Whitehall School District / 35,527 |
| 223. | 1.7% | Wallenpaupack Area School District / 24,713 |
| 225. | 1.7% | Philipsburg-Osceola Area School District / 15,254 |
| 225. | 1.7% | Hempfield School District / 46,411 |
| 227. | 1.7% | Center Valley School District / 18,061 |
| 227. | 1.7% | Cameron County School District / 5,197 |
| 227. | 1.7% | Punxsutawney Area School District / 20,825 |
| 230. | 1.6% | Uniontown Area School District / 24,156 |
| 230. | 1.6% | Charleroi School District / 12,114 |
| 230. | 1.6% | Montgomery Area School District / 7,310 |
| 230. | 1.6% | Columbia Borough School District / 10,391 |
| 234. | 1.6% | South Western School District / 26,171 |
| 234. | 1.6% | Peters Township School District / 20,528 |
| 234. | 1.6% | Sullivan County School District / 6,467 |
| 234. | 1.6% | Ridley School District / 40,225 |
| 234. | 1.6% | Conrad Weiser Area School District / 18,544 |
| 234. | 1.6% | Corry Area School District / 14,681 |
| 240. | 1.6% | Smethport Area School District / 6,189 |
| 240. | 1.6% | Whitehall-Coplay School District / 29,738 |
| 240. | 1.6% | Hazleton Area School District / 71,258 |
| 240. | 1.6% | Fairfield Area School District / 8,132 |
| 244. | 1.6% | Penn-Delco School District / 26,760 |
| 244. | 1.6% | Hatboro-Horsham School District / 33,112 |
| 246. | 1.6% | Boyertown Area School District / 44,963 |
| 246. | 1.6% | Carlisle Area School District / 36,496 |
| 248. | 1.6% | Littlestown Area School District / 15,093 |
| 248. | 1.6% | York Suburban School District / 22,072 |
| 248. | 1.6% | Wayne Highlands School District / 22,060 |
| 248. | 1.6% | Ringgold School District / 26,316 |
| 248. | 1.6% | Bedford Area School District / 16,427 |
| 253. | 1.6% | Radnor Township School District / 31,380 |
| 253. | 1.6% | North Allegheny School District / 49,124 |
| 255. | 1.6% | Curwensville Area School District / 7,233 |
| 255. | 1.6% | North Penn School District / 97,098 |
| 255. | 1.6% | Butler Area School District / 55,253 |
| 255. | 1.6% | Windber Area School District / 8,880 |
| 255. | 1.6% | Derry Area School District / 17,830 |
| 255. | 1.6% | Greensburg Salem School District / 26,260 |
| 261. | 1.6% | Cambria Heights School District / 9,997 |
| 261. | 1.6% | Norwin School District / 35,282 |
| 263. | 1.6% | Springfield Township School District / 19,458 |
| 264. | 1.5% | Greater Johnstown School District / 28,498 |
| 264. | 1.5% | Oley Valley School District / 13,436 |
| 264. | 1.5% | Upper Dauphin Area School District / 9,114 |
| 267. | 1.5% | Susquehanna Township School District / 23,614 |
| 267. | 1.5% | Central Greene School District / 15,999 |
| 267. | 1.5% | Plum Borough School District / 26,849 |
| 270. | 1.5% | Keystone Oaks School District / 20,851 |
| 271. | 1.5% | Mifflinburg Area School District / 16,305 |
| 271. | 1.5% | Jim Thorpe Area School District / 14,799 |
| 273. | 1.5% | West Branch Area School District / 8,252 |
| 273. | 1.5% | Conneaut School District / 18,287 |
| 275. | 1.5% | Penncrest School District / 25,026 |
| 275. | 1.5% | Downingtown Area School District / 66,888 |
| 277. | 1.5% | Chartiers Valley School District / 30,026 |
| 277. | 1.5% | Lakeview School District / 8,438 |
| 279. | 1.5% | Northgate School District / 13,137 |
| 279. | 1.5% | Fleetwood Area School District / 16,251 |
| 281. | 1.5% | Shaler Area School District / 39,406 |
| 281. | 1.5% | Southern York County School District / 20,526 |
| 281. | 1.5% | West Greene School District / 5,005 |
| 284. | 1.5% | Manheim Township School District / 37,360 |
| 284. | 1.5% | Monessen City School District / 7,863 |
| 286. | 1.4% | General McLane School District / 17,348 |
| 287. | 1.4% | Greater Latrobe School District / 31,057 |
| 287. | 1.4% | Karns City Area School District / 10,504 |
| 289. | 1.4% | Conestoga Valley School District / 32,228 |
| 289. | 1.4% | Wattsburg Area School District / 10,254 |
| 289. | 1.4% | Oswayo Valley School District / 3,021 |
| 292. | 1.4% | Canon-McMillan School District / 32,708 |
| 292. | 1.4% | Titusville Area School District / 14,422 |
| 292. | 1.4% | Centennial School District / 48,646 |
| 292. | 1.4% | Bethel Park School District / 32,813 |
| 296. | 1.4% | Hempfield Area School District / 51,051 |
| 296. | 1.4% | New Kensington-Arnold School District / 18,626 |
| 296. | 1.4% | Harbor Creek School District / 16,992 |
| 296. | 1.4% | Gettysburg Area School District / 27,403 |
| 300. | 1.4% | Spring-Ford Area School District / 45,415 |
| 300. | 1.4% | Cocalico School District / 22,734 |
| 300. | 1.4% | Neshaminy School District / 71,039 |
| 303. | 1.4% | Bristol Township School District / 55,003 |
| 303. | 1.4% | Franklin Regional School District / 22,656 |
| 303. | 1.4% | Montoursville Area School District / 13,241 |
| 306. | 1.4% | Mifflin County School District / 43,493 |
| 306. | 1.4% | Woodland Hills School District / 47,481 |
| 306. | 1.4% | Northern Cambria School District / 7,862 |
| 309. | 1.4% | Clairton City School District / 7,023 |
| 309. | 1.4% | Elizabethtown Area School District / 29,524 |
| 309. | 1.4% | Hermitage School District / 16,155 |
| 312. | 1.4% | South Park School District / 13,448 |
| 312. | 1.4% | Hopewell Area School District / 18,310 |
| 314. | 1.3% | North Hills School District / 37,909 |
| 314. | 1.3% | Haverford Township School District / 48,546 |
| 314. | 1.3% | Warren County School District / 38,845 |
| 314. | 1.3% | South Side Area School District / 6,922 |
| 318. | 1.3% | Colonial School District / 41,428 |
| 318. | 1.3% | Muncy School District / 7,121 |
| 318. | 1.3% | Pennsbury School District / 71,441 |
| 318. | 1.3% | North East School District / 10,659 |
| 322. | 1.3% | Upper Merion Area School District / 33,982 |
| 322. | 1.3% | Kiski Area School District / 28,824 |
| 322. | 1.3% | Altoona Area School District / 60,134 |
| 322. | 1.3% | Wissahickon School District / 36,426 |
| 326. | 1.3% | Shade-Central City School District / 4,070 |
| 326. | 1.3% | Blackhawk School District / 17,625 |
| 328. | 1.3% | Port Allegany School District / 5,776 |
| 328. | 1.3% | DuBois Area School District / 31,391 |
| 330. | 1.3% | Great Valley School District / 29,396 |
| 330. | 1.3% | Bermudian Springs School District / 13,299 |
| 332. | 1.3% | McKeesport Area School District / 31,829 |
| 332. | 1.3% | Palmyra Area School District / 21,859 |
| 332. | 1.3% | New Brighton Area School District / 11,089 |
| 335. | 1.3% | Keystone Central School District / 36,934 |
| 335. | 1.3% | Blairsville-Saltsburg School District / 13,651 |
| 335. | 1.3% | Coatesville Area School District / 61,322 |
| 335. | 1.3% | Pine-Richland School District / 21,423 |
| 339. | 1.3% | Ambridge Area School District / 23,900 |
| 339. | 1.3% | Penns Valley Area School District / 12,083 |
| 341. | 1.3% | Pottsgrove School District / 20,842 |
| 341. | 1.3% | Grove City Area School District / 17,417 |
| 341. | 1.3% | Yough School District / 16,604 |
| 344. | 1.2% | Highlands School District / 20,690 |
| 344. | 1.2% | Milton Area School District / 16,604 |
| 344. | 1.2% | Dover Area School District / 25,495 |
| 344. | 1.2% | Chambersburg Area School District / 64,902 |
| 344. | 1.2% | Tri-Valley School District / 6,631 |
| 349. | 1.2% | Oxford Area School District / 25,212 |
| 350. | 1.2% | Penn Manor School District / 40,554 |
| 350. | 1.2% | Mt. Lebanon School District / 32,838 |
| 350. | 1.2% | Interboro School District / 23,667 |
| 350. | 1.2% | Big Beaver Falls Area School District / 13,764 |
| 354. | 1.2% | Montour School District / 25,181 |
| 355. | 1.2% | Penn Hills School District / 42,856 |
| 355. | 1.2% | Turkeyfoot Valley Area School District / 2,851 |
| 355. | 1.2% | Redbank Valley School District / 8,190 |
| 355. | 1.2% | Apollo-Ridge School District / 9,571 |
| 359. | 1.2% | East Allegheny School District / 15,235 |
| 359. | 1.2% | Donegal School District / 19,994 |
| 359. | 1.2% | South Allegheny School District / 11,965 |
| 359. | 1.2% | Springfield School District / 26,717 |
| 363. | 1.2% | Franklin Area School District / 16,585 |
| 364. | 1.2% | East Lycoming School District / 9,995 |
| 364. | 1.2% | Moon Area School District / 26,199 |
| 364. | 1.2% | New Hope-Solebury School District / 11,033 |
| 367. | 1.2% | Moniteau School District / 9,611 |
| 367. | 1.2% | Deer Lakes School District / 14,093 |
| 369. | 1.1% | Warrior Run School District / 17,583 |
| 369. | 1.1% | Freedom Area School District / 10,960 |
| 371. | 1.1% | Rochester Area School District / 7,272 |
| 371. | 1.1% | Dallastown Area School District / 40,104 |
| 371. | 1.1% | Laurel Highlands School District / 23,820 |
| 374. | 1.1% | Greenville Area School District / 10,835 |
| 374. | 1.1% | Union Area School District / 5,526 |
| 376. | 1.1% | Forbes Road School District / 3,101 |
| 377. | 1.1% | Pottstown School District / 22,302 |
| 377. | 1.1% | Rockwood Area School District / 5,842 |
| 377. | 1.1% | South Fayette Township School District / 13,915 |
| 380. | 1.1% | Abington School District / 57,966 |
| 380. | 1.1% | Fox Chapel Area School District / 28,519 |
| 380. | 1.1% | Sharon City School District / 14,456 |
| 380. | 1.1% | Fort Cherry School District / 8,823 |
| 384. | 1.1% | Solanco School District / 31,452 |
| 384. | 1.1% | Armstrong School District / 43,927 |
| 386. | 1.1% | Cheltenham Township School District / 36,795 |
| 387. | 1.1% | Marple Newtown School District / 35,527 |
| 388. | 1.0% | Pocono Mountain School District / 63,678 |
| 388. | 1.0% | Mount Union Area School District / 9,911 |
| 388. | 1.0% | Methacton School District / 34,270 |
| 388. | 1.0% | Fort LeBoeuf School District / 13,924 |
| 388. | 1.0% | Fairview School District / 10,062 |
| 393. | 1.0% | East Stroudsburg Area School District / 46,994 |
| 394. | 1.0% | Tuscarora School District / 18,181 |
| 394. | 1.0% | Antietam School District / 7,601 |
| 394. | 1.0% | Allegheny Valley School District / 9,566 |
| 394. | 1.0% | Allegheny-Clarion Valley School District / 5,931 |
| 394. | 1.0% | Central York School District / 35,526 |
| 399. | 1.0% | Lampeter-Strasburg School District / 22,357 |
| 399. | 1.0% | Council Rock School District / 72,280 |
| 399. | 1.0% | Morrisville Borough School District / 9,020 |
| 402. | 1.0% | Greenwood School District / 5,238 |
| 402. | 1.0% | Everett Area School District / 10,030 |
| 402. | 1.0% | Jersey Shore Area School District / 18,283 |
| 405. | 1.0% | Brockway Area School District / 7,283 |
| 406. | 1.0% | Kane Area School District / 7,440 |
| 406. | 1.0% | Allentown City School District / 116,398 |
| 406. | 1.0% | Juniata County School District / 23,858 |
| 406. | 1.0% | Pittsburgh School District / 311,470 |
| 410. | 1.0% | Waynesboro Area School District / 31,582 |
| 411. | 0.9% | Brandywine Heights Area School District / 13,180 |
| 411. | 0.9% | Connellsville Area School District / 35,324 |
| 411. | 0.9% | Bradford Area School District / 21,393 |
| 411. | 0.9% | Southeast Delco School District / 30,359 |
| 415. | 0.9% | Lebanon School District / 26,360 |
| 415. | 0.9% | Forest Area School District / 8,124 |
| 415. | 0.9% | Millcreek Township School District / 52,960 |
| 418. | 0.9% | Coudersport Area School District / 5,780 |
| 418. | 0.9% | Eastern Lebanon County School District / 20,267 |
| 418. | 0.9% | Northern Lebanon School District / 16,476 |
| 421. | 0.9% | West Perry School District / 18,316 |
| 421. | 0.9% | West Jefferson Hills School District / 19,342 |
| 423. | 0.9% | Fannett-Metal School District / 4,457 |
| 423. | 0.9% | Hamburg Area School District / 17,991 |
| 423. | 0.9% | Shippensburg Area School District / 27,578 |
| 423. | 0.9% | Red Lion Area School District / 37,810 |
| 427. | 0.9% | Washington School District / 16,251 |
| 428. | 0.9% | Tulpehocken Area School District / 12,330 |
| 428. | 0.9% | Burrell School District / 13,962 |
| 430. | 0.9% | Berlin Brothersvalley School District / 5,805 |
| 430. | 0.9% | Jeannette City School District / 9,788 |
| 430. | 0.9% | Northern Bedford County School District / 7,006 |
| 433. | 0.9% | Annville-Cleona School District / 12,487 |
| 434. | 0.9% | Lower Merion School District / 62,315 |
| 435. | 0.8% | West York Area School District / 23,407 |
| 435. | 0.8% | Albert Gallatin Area School District / 24,007 |
| 437. | 0.8% | Pequea Valley School District / 21,127 |
| 438. | 0.8% | Upper Adams School District / 10,436 |
| 438. | 0.8% | Erie City School District / 101,635 |
| 440. | 0.8% | Norristown Area School District / 62,808 |
| 440. | 0.8% | Southern Fulton School District / 5,578 |
| 440. | 0.8% | Southeastern Greene School District / 4,632 |
| 440. | 0.8% | Line Mountain School District / 9,195 |
| 444. | 0.8% | Spring Grove Area School District / 27,013 |
| 444. | 0.8% | Mount Pleasant Area School District / 18,184 |
| 444. | 0.8% | Cornwall-Lebanon School District / 33,892 |
| 447. | 0.8% | Ridgway Area School District / 7,084 |
| 447. | 0.8% | Manheim Central School District / 23,504 |
| 447. | 0.8% | McGuffey School District / 12,939 |
| 447. | 0.8% | Avella Area School District / 4,097 |
| 451. | 0.8% | Homer-Center School District / 6,634 |
| 451. | 0.8% | Leechburg Area School District / 6,059 |
| 453. | 0.8% | Midd-West School District / 17,017 |
| 453. | 0.8% | Iroquois School District / 7,348 |
| 455. | 0.7% | Bensalem Township School District / 60,173 |
| 455. | 0.7% | Lancaster School District / 74,169 |
| 455. | 0.7% | York City School District / 43,592 |
| 455. | 0.7% | Upper Darby School District / 90,078 |
| 459. | 0.7% | Girard School District / 11,146 |
| 460. | 0.7% | Western Beaver County School District / 5,419 |
| 460. | 0.7% | Hanover Public School District / 15,256 |
| 462. | 0.7% | Jefferson-Morgan School District / 6,286 |
| 462. | 0.7% | South Middleton School District / 14,394 |
| 464. | 0.7% | Middletown Area School District / 18,304 |
| 465. | 0.7% | Salisbury-Elk Lick School District / 2,910 |
| 466. | 0.7% | Reading School District / 87,404 |
| 466. | 0.7% | Union City Area School District / 6,971 |
| 468. | 0.6% | North Clarion County School District / 4,613 |
| 469. | 0.6% | Sto-Rox School District / 12,497 |
| 470. | 0.6% | Southmoreland School District / 15,390 |
| 470. | 0.6% | Southern Huntingdon County School District / 8,193 |
| 472. | 0.6% | Northwestern School District / 12,095 |
| 473. | 0.6% | Bentworth School District / 8,514 |
| 474. | 0.5% | St. Marys Area School District / 19,401 |
| 475. | 0.5% | Union School District / 4,327 |
| 476. | 0.5% | Glendale School District / 5,280 |
| 477. | 0.5% | Central Fulton School District / 6,160 |
| 478. | 0.5% | Clarion Area School District / 8,941 |
| 478. | 0.5% | Greencastle-Antrim School District / 18,480 |
| 480. | 0.5% | Steelton-Highspire School District / 8,706 |
| 480. | 0.5% | Penn Cambria School District / 17,435 |
| 482. | 0.5% | Cornell School District / 6,846 |
| 482. | 0.5% | Chartiers-Houston School District / 9,081 |
| 484. | 0.5% | Lower Moreland Township School District / 12,662 |
| 485. | 0.4% | Spring Cove School District / 13,924 |
| 485. | 0.4% | Conewago Valley School District / 26,476 |
| 487. | 0.4% | Bristol Borough School District / 9,831 |
| 488. | 0.4% | William Penn School District / 42,067 |
| 489. | 0.4% | Harrisburg City School District / 49,332 |
| 490. | 0.4% | Jenkintown School District / 4,446 |
| 491. | 0.4% | Midland Borough School District / 2,704 |
| 492. | 0.4% | Burgettstown Area School District / 10,003 |
| 493. | 0.3% | Philadelphia City School District / 1,504,950 |
| 493. | 0.3% | Chester-Upland School District / 41,712 |
| 495. | 0.3% | Wilkinsburg Borough School District / 16,348 |
| 495. | 0.3% | Duquesne City School District / 5,826 |
| 497. | 0.2% | Aliquippa School District / 9,779 |
| 498. | 0.1% | Carmichaels Area School District / 7,081 |
| 499. | 0.1% | Farrell Area School District / 5,957 |
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.
