| Rank | Welsh as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 10.3% | School Administrative District 65 / 58 |
| 2. | 9.7% | Whiting / 467 |
| 3. | 8.3% | The Forks Plantation / 24 |
| 4. | 5.6% | Cranberry Isles / 123 |
| 5. | 5.3% | Blue Hill / 2,680 |
| 6. | 4.8% | Lake View Plantation / 66 |
| 7. | 4.3% | Meddybemps / 121 |
| 8. | 4.3% | Charlotte / 279 |
| 9. | 3.9% | Bowerbank / 122 |
| 10. | 3.9% | Lincolnville / 2,269 |
| 11. | 3.5% | Otis / 587 |
| 12. | 3.3% | Nobleboro / 1,702 |
| 13. | 3.1% | Islesboro / 643 |
| 14. | 3.1% | Jonesboro / 495 |
| 15. | 3.0% | Calais / 3,063 |
| 16. | 3.0% | Alexander / 437 |
| 17. | 2.9% | Piscataquis Unorganized Territory / 722 |
| 18. | 2.7% | Talmadge / 83 |
| 18. | 2.7% | School Administrative District 23 / 5,696 |
| 20. | 2.7% | School Administrative District 07 / 410 |
| 20. | 2.7% | Caswell / 246 |
| 22. | 2.6% | Baileyville / 1,409 |
| 23. | 2.5% | Cooper / 133 |
| 24. | 2.4% | Gilead / 89 |
| 25. | 2.4% | School Administrative District 76 / 302 |
| 26. | 2.3% | Vanceboro / 111 |
| 27. | 2.3% | Penobscot / 1,153 |
| 28. | 2.3% | Washington Unorganized Territory / 1,495 |
| 29. | 2.3% | Great Lake Stream Plantation / 118 |
| 30. | 2.2% | Regional School Unit 25 / 8,333 |
| 31. | 2.2% | Name N/A / 13,571 |
| 32. | 2.1% | Name N/A / 527 |
| 33. | 2.1% | School Administrative District 28 / 8,177 |
| 34. | 2.0% | School Administrative District 08 / 1,327 |
| 35. | 2.0% | Georgetown / 1,050 |
| 35. | 2.0% | Brooksville / 885 |
| 37. | 1.9% | Hancock Unorganized Territory / 177 |
| 38. | 1.9% | Trenton / 1,555 |
| 39. | 1.9% | Regional School Unit 18 / 19,051 |
| 40. | 1.8% | School Administrative District 19 / 1,485 |
| 40. | 1.8% | Boothbay-Boothbay Harbor Community School District / 5,113 |
| 42. | 1.8% | Tremont / 1,764 |
| 42. | 1.8% | Roque Bluffs / 262 |
| 44. | 1.8% | Jefferson / 2,535 |
| 44. | 1.8% | Hope / 1,651 |
| 46. | 1.7% | School Administrative District 61 / 14,598 |
| 47. | 1.7% | School Administrative District 04 / 5,106 |
| 48. | 1.7% | Orrington / 3,721 |
| 49. | 1.6% | Kittery / 9,573 |
| 50. | 1.6% | School Administrative District 41 / 4,323 |
| 50. | 1.6% | School Administrative District 72 / 8,110 |
| 52. | 1.5% | Name N/A / 5,321 |
| 53. | 1.5% | Southwest Harbor / 1,976 |
| 54. | 1.5% | Bristol / 2,738 |
| 55. | 1.5% | Name N/A / 10,044 |
| 55. | 1.5% | Name N/A / 31,148 |
| 57. | 1.5% | Oxford Unorganized Territory / 544 |
| 57. | 1.5% | New Sweden / 611 |
| 57. | 1.5% | Regional School Unit 20 / 17,022 |
| 60. | 1.5% | Regional School Unit 13 / 17,174 |
| 61. | 1.4% | Machiasport / 1,185 |
| 62. | 1.4% | Lisbon / 8,936 |
| 63. | 1.4% | School Administrative District 68 / 6,681 |
| 63. | 1.4% | Sedgwick / 1,137 |
| 65. | 1.3% | Princeton / 803 |
| 66. | 1.3% | Mount Desert / 2,174 |
| 67. | 1.3% | Easton / 1,198 |
| 68. | 1.3% | Gorham / 16,677 |
| 68. | 1.3% | School Administrative District 51 / 10,963 |
| 70. | 1.2% | School Administrative District 75 / 19,467 |
| 71. | 1.2% | Mount Desert Community School District / 11,183 |
| 72. | 1.2% | Robbinston / 533 |
| 73. | 1.2% | Medford / 204 |
| 74. | 1.2% | School Administrative District 06 / 26,158 |
| 74. | 1.2% | Brooklin / 858 |
| 76. | 1.2% | School Administrative District 46 / 6,518 |
| 76. | 1.2% | Regional School Unit 04 / 10,540 |
| 76. | 1.2% | Regional School Unit 10 / 18,853 |
| 79. | 1.1% | Appleton / 1,474 |
| 80. | 1.1% | School Administrative District 54 / 17,008 |
| 80. | 1.1% | School Administrative District 35 / 13,510 |
| 82. | 1.1% | Acton / 2,497 |
| 83. | 1.1% | Regional School Unit 05 / 13,441 |
| 84. | 1.1% | Grand Isle / 488 |
| 84. | 1.1% | School Administrative District 09 / 17,770 |
| 84. | 1.1% | School Administrative District 17 / 24,133 |
| 87. | 1.1% | School Administrative District 03 / 10,597 |
| 88. | 1.0% | Carrabassett Valley / 561 |
| 89. | 1.0% | Regional School Unit 24 / 18,942 |
| 90. | 1.0% | Penobscot Unorganized Territory / 1,165 |
| 90. | 1.0% | School Administration District 10 / 215 |
| 92. | 1.0% | Name N/A / 1,843 |
| 93. | 1.0% | School Administrative District 63 / 6,385 |
| 93. | 1.0% | School Administrative District 11 / 13,654 |
| 93. | 1.0% | Regional School Unit 19 / 14,878 |
| 96. | 1.0% | Bangor / 32,800 |
| 97. | 1.0% | Woodland / 1,193 |
| 97. | 1.0% | Brewer / 9,391 |
| 99. | 0.9% | South Portland / 25,154 |
| 100. | 0.9% | Long Island / 239 |
| 101. | 0.9% | Regional School Unit 21 / 18,582 |
| 102. | 0.9% | Regional School Unit 38 / 7,860 |
| 103. | 0.9% | Portland / 66,317 |
| 103. | 0.9% | Sanford / 20,853 |
| 105. | 0.9% | School Administrative District 49 / 14,602 |
| 105. | 0.9% | Name N/A / 1,072 |
| 105. | 0.9% | Regional School Unit 26 / 10,515 |
| 108. | 0.9% | Regional School Unit 01 / 15,974 |
| 109. | 0.8% | Bar Harbor / 5,269 |
| 109. | 0.8% | Regional School Unit 12 / 14,756 |
| 111. | 0.8% | Regional School Unit 02 / 14,616 |
| 111. | 0.8% | Yarmouth / 8,433 |
| 113. | 0.8% | Wells-Ogunquit Community School District / 10,924 |
| 113. | 0.8% | South Bristol / 952 |
| 113. | 0.8% | Lewiston / 36,410 |
| 116. | 0.8% | Winslow / 7,709 |
| 117. | 0.8% | Pembroke / 881 |
| 118. | 0.8% | Regional School Unit 14 / 21,760 |
| 119. | 0.7% | School Administrative District 55 / 8,125 |
| 119. | 0.7% | Name N/A / 1,959 |
| 121. | 0.7% | Machias / 2,209 |
| 122. | 0.7% | School Administrative District 37 / 4,633 |
| 123. | 0.7% | School Administrative District 29 / 7,911 |
| 124. | 0.7% | Damariscotta / 2,001 |
| 125. | 0.6% | Hermon / 5,598 |
| 126. | 0.6% | Harmony / 816 |
| 126. | 0.6% | Regional School Unit 23 / 29,425 |
| 126. | 0.6% | Regional School Unit 16 / 11,045 |
| 129. | 0.6% | Castine / 1,425 |
| 129. | 0.6% | School Administrative District 22 / 13,773 |
| 131. | 0.6% | Augusta / 18,898 |
| 132. | 0.6% | Cape Elizabeth / 9,093 |
| 132. | 0.6% | School Administrative District 42 / 2,252 |
| 134. | 0.6% | Somerset Unorganized Territory / 647 |
| 134. | 0.6% | Beals / 485 |
| 134. | 0.6% | School Administrative District 64 / 7,974 |
| 137. | 0.5% | Newcastle / 1,775 |
| 138. | 0.5% | Auburn / 22,960 |
| 139. | 0.5% | York / 12,661 |
| 139. | 0.5% | School Administrative District 01 / 12,992 |
| 141. | 0.5% | Southport / 622 |
| 141. | 0.5% | School Administrative District 67 / 6,389 |
| 143. | 0.5% | School Administrative District 74 / 5,395 |
| 144. | 0.5% | Great Salt Bay Community School District / 4,670 |
| 144. | 0.5% | School Administrative District 45 / 2,323 |
| 144. | 0.5% | School Administrative District 30 / 2,269 |
| 147. | 0.5% | Westbrook / 17,662 |
| 148. | 0.5% | Scarborough / 19,209 |
| 149. | 0.4% | School Administrative District 40 / 14,356 |
| 150. | 0.4% | Brunswick / 20,329 |
| 150. | 0.4% | School Administrative District 44 / 5,676 |
| 150. | 0.4% | Name N/A / 1,271 |
| 150. | 0.4% | School Administrative District 60 / 18,087 |
| 154. | 0.4% | Milford / 3,054 |
| 155. | 0.4% | Surry / 1,666 |
| 155. | 0.4% | School Administrative District 70 / 3,752 |
| 157. | 0.4% | Winthrop / 6,046 |
| 158. | 0.4% | East Machias / 1,381 |
| 159. | 0.4% | Medway / 1,157 |
| 159. | 0.4% | School Administrative District 14 / 737 |
| 161. | 0.3% | Greenville / 1,841 |
| 161. | 0.3% | School Administrative District 52 / 12,096 |
| 163. | 0.3% | Madawaska / 3,965 |
| 164. | 0.3% | Edgecomb / 1,154 |
| 164. | 0.3% | Waterville / 15,886 |
| 166. | 0.3% | Millinocket / 4,451 |
| 166. | 0.3% | School Administrative District 53 / 6,297 |
| 166. | 0.3% | School Administrative District 20 / 3,447 |
| 169. | 0.3% | School Administrative District 33 / 1,608 |
| 169. | 0.3% | Chebeague Island / 431 |
| 169. | 0.3% | School Administrative District 15 / 13,450 |
| 172. | 0.3% | School Administrative District 32 / 2,185 |
| 173. | 0.3% | Regional School Unit 39 / 10,339 |
| 174. | 0.2% | Falmouth / 11,424 |
| 175. | 0.2% | School Administrative District 57 / 22,234 |
| 176. | 0.2% | Deer Isle-Stonington Community School District / 3,165 |
| 177. | 0.2% | Regional School Unit 34 / 10,069 |
| 177. | 0.2% | Aroostook Unorganized Territory / 1,572 |
| 179. | 0.2% | Vassalboro / 4,337 |
| 179. | 0.2% | School Administrative District 59 / 5,326 |
| 179. | 0.2% | Name N/A / 4,615 |
| 182. | 0.2% | Name N/A / 1,724 |
| 182. | 0.2% | Biddeford / 21,303 |
| 184. | 0.1% | Dedham / 1,584 |
| 185. | 0.1% | School Administrative District 27 / 6,478 |
| 186. | 0.1% | School Administrative District 58 / 3,974 |
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.
