| Rank | Irish as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 60.0% | Kingsbury Plantation / 17 |
| 2. | 56.3% | Monhegan Plantation / 34 |
| 3. | 51.5% | Reed Plantation / 133 |
| 4. | 47.7% | Macwahoc Plantation / 71 |
| 5. | 45.4% | Pleasant Ridge Plantation / 106 |
| 6. | 39.2% | School Administration District 10 / 201 |
| 7. | 38.2% | School Administrative District 42 / 2,284 |
| 8. | 38.0% | Woodville / 219 |
| 9. | 34.9% | Northfield / 177 |
| 10. | 33.9% | Baring Plantation / 289 |
| 11. | 33.0% | East Machias / 1,235 |
| 12. | 31.6% | Eastport / 1,458 |
| 13. | 30.8% | Carroll Plantation / 85 |
| 14. | 30.2% | Carrabassett Valley / 531 |
| 15. | 30.1% | Easton / 1,249 |
| 16. | 29.4% | School Administrative District 70 / 3,684 |
| 17. | 29.4% | School Administrative District 29 / 8,199 |
| 18. | 29.3% | School Administrative District 13 / 1,439 |
| 19. | 28.3% | Newcastle / 1,814 |
| 20. | 28.3% | South Portland / 24,997 |
| 21. | 27.8% | Waite / 100 |
| 22. | 27.1% | Marshfield / 424 |
| 23. | 27.0% | Yarmouth / 8,390 |
| 24. | 27.0% | Tremont / 1,775 |
| 25. | 26.7% | Cape Elizabeth / 9,055 |
| 26. | 26.6% | Long Island / 310 |
| 27. | 26.4% | Acton / 2,457 |
| 28. | 26.2% | Name N/A / 5,673 |
| 29. | 26.0% | Chebeague Island / 285 |
| 30. | 25.9% | Regional School Unit 21 / 18,423 |
| 31. | 25.9% | Name N/A / 1,779 |
| 32. | 25.3% | Gorham / 16,395 |
| 33. | 25.0% | Charlotte / 284 |
| 34. | 24.2% | Regional School Unit 12 / 14,737 |
| 35. | 24.2% | School Administrative District 61 / 14,444 |
| 36. | 24.1% | Scarborough / 18,941 |
| 37. | 23.8% | Wesley / 90 |
| 37. | 23.8% | Portland / 66,235 |
| 39. | 23.8% | School Administrative District 60 / 17,903 |
| 40. | 23.7% | Bangor / 32,988 |
| 41. | 23.7% | Perry / 961 |
| 42. | 23.7% | Sedgwick / 1,226 |
| 43. | 23.6% | Baileyville / 1,392 |
| 44. | 23.5% | Damariscotta / 2,170 |
| 45. | 23.5% | Great Salt Bay Community School District / 4,768 |
| 46. | 23.3% | York / 12,625 |
| 47. | 23.3% | School Administrative District 19 / 1,373 |
| 48. | 23.0% | Greenville / 1,692 |
| 49. | 23.0% | Alexander / 419 |
| 50. | 22.9% | Boothbay-Boothbay Harbor Community School District / 5,266 |
| 51. | 22.8% | Orrington / 3,737 |
| 52. | 22.8% | School Administrative District 55 / 8,061 |
| 53. | 22.6% | Oxford Unorganized Territory / 594 |
| 53. | 22.6% | Jefferson / 2,602 |
| 55. | 22.6% | Westbrook / 17,501 |
| 56. | 22.6% | Brewer / 9,452 |
| 57. | 22.5% | Appleton / 1,642 |
| 58. | 22.5% | Caratunk / 81 |
| 59. | 22.5% | Calais / 3,132 |
| 60. | 22.5% | Airline Community School District / 438 |
| 61. | 22.3% | Trenton / 1,419 |
| 62. | 22.3% | Jonesport / 1,308 |
| 63. | 22.3% | School Administrative District 07 / 456 |
| 64. | 22.3% | School Administrative District 45 / 2,346 |
| 65. | 22.0% | School Administrative District 64 / 7,793 |
| 65. | 22.0% | Winthrop / 6,107 |
| 67. | 22.0% | Shirley / 320 |
| 68. | 21.9% | Hermon / 5,432 |
| 69. | 21.9% | Sanford / 20,885 |
| 70. | 21.8% | East Millinocket / 1,818 |
| 71. | 21.7% | School Administrative District 51 / 10,796 |
| 72. | 21.6% | Name N/A / 1,761 |
| 73. | 21.6% | Machias / 2,392 |
| 74. | 21.5% | School Administrative District 03 / 10,466 |
| 75. | 21.4% | School Administrative District 32 / 2,159 |
| 75. | 21.4% | Bristol / 2,748 |
| 77. | 21.4% | Lowell / 292 |
| 78. | 21.4% | Regional School Unit 39 / 10,596 |
| 79. | 21.3% | Islesboro / 626 |
| 80. | 21.0% | Regional School Unit 23 / 29,430 |
| 81. | 21.0% | Waterville / 15,780 |
| 82. | 20.9% | Name N/A / 31,164 |
| 83. | 20.9% | Woodland / 1,215 |
| 84. | 20.8% | Regional School Unit 02 / 14,802 |
| 85. | 20.5% | Mount Desert Community School District / 10,939 |
| 86. | 20.5% | School Administrative District 68 / 6,850 |
| 87. | 20.5% | School Administrative District 37 / 5,873 |
| 88. | 20.4% | Augusta / 19,088 |
| 89. | 20.4% | Otis / 508 |
| 90. | 20.4% | Regional School Unit 14 / 21,475 |
| 91. | 20.3% | School Administrative District 75 / 19,564 |
| 91. | 20.3% | School Administrative District 22 / 12,465 |
| 91. | 20.3% | Greenbush / 1,326 |
| 94. | 20.3% | Name N/A / 13,696 |
| 95. | 20.3% | School Administrative District 63 / 6,369 |
| 95. | 20.3% | Cutler / 560 |
| 97. | 20.2% | Lincolnville / 2,192 |
| 98. | 20.2% | School Administrative District 08 / 1,126 |
| 99. | 20.1% | School Administrative District 20 / 3,478 |
| 99. | 20.1% | Brunswick / 20,376 |
| 101. | 20.1% | Regional School Unit 20 / 18,290 |
| 102. | 20.1% | Regional School Unit 19 / 14,814 |
| 103. | 20.0% | Regional School Unit 13 / 17,136 |
| 104. | 20.0% | Dennysville / 408 |
| 104. | 20.0% | School Administrative District 28 / 8,227 |
| 104. | 20.0% | Mount Desert / 2,086 |
| 107. | 20.0% | Regional School Unit 26 / 17,096 |
| 108. | 19.9% | Roque Bluffs / 236 |
| 109. | 19.9% | Bar Harbor / 5,230 |
| 110. | 19.9% | School Administrative District 74 / 5,330 |
| 111. | 19.8% | School Administrative District 54 / 17,259 |
| 112. | 19.7% | Hope / 1,635 |
| 113. | 19.7% | Millinocket / 4,530 |
| 114. | 19.6% | School Administrative District 11 / 13,659 |
| 115. | 19.5% | School Administrative District 35 / 13,454 |
| 115. | 19.5% | School Administrative District 17 / 24,188 |
| 117. | 19.5% | Regional School Unit 05 / 13,256 |
| 118. | 19.4% | School Administrative District 59 / 6,482 |
| 119. | 19.3% | South Bristol / 964 |
| 120. | 19.2% | Beals / 453 |
| 121. | 19.2% | School Administrative District 46 / 6,550 |
| 122. | 19.1% | Brooklin / 981 |
| 123. | 19.1% | Great Lake Stream Plantation / 115 |
| 124. | 19.1% | School Administrative District 23 / 5,610 |
| 125. | 19.1% | School Administrative District 06 / 25,994 |
| 126. | 19.0% | Regional School Unit 10 / 18,910 |
| 127. | 19.0% | Georgetown / 935 |
| 128. | 18.9% | Bridgewater / 622 |
| 128. | 18.9% | Vassalboro / 4,354 |
| 130. | 18.9% | School Administrative District 01 / 13,023 |
| 131. | 18.9% | Aroostook Unorganized Territory / 1,408 |
| 132. | 18.9% | Falmouth / 11,233 |
| 133. | 18.8% | Robbinston / 579 |
| 134. | 18.6% | Regional School Unit 01 / 16,270 |
| 135. | 18.6% | Willimantic / 71 |
| 136. | 18.5% | Wells-Ogunquit Community School District / 10,845 |
| 137. | 18.5% | Cranberry Isles / 98 |
| 138. | 18.4% | Regional School Unit 24 / 18,720 |
| 139. | 18.4% | Milford / 3,056 |
| 140. | 18.4% | Medway / 1,332 |
| 141. | 18.3% | School Administrative District 76 / 386 |
| 142. | 18.3% | Hancock Unorganized Territory / 162 |
| 143. | 18.3% | Lisbon / 9,023 |
| 144. | 18.3% | School Administrative District 09 / 17,751 |
| 145. | 18.2% | Cooper / 174 |
| 146. | 18.0% | School Administrative District 57 / 21,912 |
| 147. | 18.0% | School Administrative District 40 / 14,537 |
| 147. | 18.0% | Washington Unorganized Territory / 1,475 |
| 149. | 18.0% | Kittery / 9,538 |
| 150. | 18.0% | School Administrative District 67 / 6,398 |
| 151. | 17.9% | Regional School Unit 04 / 10,431 |
| 152. | 17.9% | Blue Hill / 2,681 |
| 153. | 17.8% | Southport / 539 |
| 154. | 17.7% | School Administrative District 72 / 7,759 |
| 155. | 17.7% | Regional School Unit 34 / 10,342 |
| 156. | 17.5% | Franklin Unorganized Territory / 843 |
| 157. | 17.3% | Lewiston / 36,588 |
| 158. | 17.2% | Pembroke / 931 |
| 159. | 17.2% | Auburn / 23,104 |
| 159. | 17.2% | School Administrative District 41 / 4,454 |
| 161. | 17.0% | Orient / 136 |
| 162. | 17.0% | Fayette / 1,203 |
| 163. | 16.9% | Dedham / 1,850 |
| 164. | 16.5% | Princeton / 815 |
| 165. | 16.5% | School Administrative District 04 / 5,172 |
| 166. | 16.3% | Southwest Harbor / 1,848 |
| 167. | 16.3% | School Administrative District 58 / 4,903 |
| 168. | 16.3% | School Administrative District 30 / 2,035 |
| 169. | 16.2% | Biddeford / 21,351 |
| 170. | 16.2% | Machiasport / 1,161 |
| 171. | 16.1% | School Administrative District 53 / 6,216 |
| 171. | 16.1% | Regional School Unit 25 / 8,394 |
| 173. | 16.0% | Brooksville / 983 |
| 174. | 15.9% | Piscataquis Unorganized Territory / 971 |
| 175. | 15.9% | School Administrative District 31 / 4,033 |
| 176. | 15.7% | Jonesboro / 511 |
| 177. | 15.7% | Regional School Unit 18 / 19,006 |
| 177. | 15.7% | Highland Plantation / 70 |
| 179. | 15.5% | Westmanland / 71 |
| 180. | 15.4% | Frenchboro / 73 |
| 181. | 15.4% | Regional School Unit 16 / 11,007 |
| 182. | 15.1% | Somerset Unorganized Territory / 694 |
| 183. | 14.9% | Regional School Unit 38 / 7,758 |
| 184. | 14.8% | School Administrative District 44 / 5,903 |
| 185. | 14.8% | Nashville Plantation / 70 |
| 186. | 14.7% | Kennebec Unorganized Territory / 80 |
| 187. | 14.6% | School Administrative District 12 / 1,114 |
| 188. | 14.4% | School Administrative District 52 / 12,032 |
| 189. | 14.3% | Penobscot Unorganized Territory / 1,192 |
| 190. | 14.3% | Lakeville / 76 |
| 191. | 14.2% | Nobleboro / 1,699 |
| 192. | 14.0% | Name N/A / 10,191 |
| 193. | 14.0% | Penobscot / 1,086 |
| 194. | 13.8% | Crawford / 107 |
| 195. | 13.8% | School Administrative District 65 / 58 |
| 196. | 13.4% | Meddybemps / 133 |
| 197. | 13.2% | Bremen / 784 |
| 198. | 13.2% | Edgecomb / 1,082 |
| 199. | 13.1% | New Sweden / 576 |
| 200. | 13.0% | Deer Isle-Stonington Community School District / 2,918 |
| 201. | 12.9% | Isle au Haut / 93 |
| 202. | 12.9% | School Administrative District 49 / 14,826 |
| 203. | 12.8% | Surry / 1,736 |
| 204. | 12.8% | Vanceboro / 128 |
| 205. | 12.7% | Whiting / 512 |
| 206. | 12.6% | Winslow / 7,779 |
| 207. | 12.5% | Talmadge / 57 |
| 208. | 12.4% | School Administrative District 15 / 13,280 |
| 209. | 12.3% | Harmony / 820 |
| 210. | 12.2% | Coplin Plantation / 80 |
| 211. | 11.8% | Lake View Plantation / 71 |
| 211. | 11.8% | Beddington / 57 |
| 213. | 11.2% | Gilead / 95 |
| 214. | 11.2% | Castine / 1,673 |
| 215. | 11.0% | Bowerbank / 88 |
| 216. | 9.9% | School Administrative District 27 / 6,495 |
| 217. | 9.8% | School Administrative District 14 / 797 |
| 218. | 9.7% | East Range Community School District / 202 |
| 219. | 9.7% | West Forks Plantation / 31 |
| 220. | 9.1% | The Forks Plantation / 22 |
| 221. | 8.7% | Beaver Cove / 203 |
| 222. | 8.6% | Indian Island / 693 |
| 222. | 8.6% | Whitneyville / 187 |
| 224. | 7.3% | Upton / 76 |
| 225. | 6.7% | Deblois / 40 |
| 226. | 6.5% | Lincoln Plantation / 38 |
| 227. | 5.7% | Pleasant Point / 585 |
| 228. | 5.6% | School Administrative District 24 / 2,980 |
| 229. | 5.4% | Caswell / 312 |
| 230. | 4.7% | Grand Isle / 481 |
| 231. | 4.4% | Madawaska / 4,046 |
| 232. | 4.3% | Medford / 211 |
| 233. | 3.0% | Bancroft / 71 |
| 234. | 2.5% | School Administrative District 33 / 1,783 |
| 235. | 2.1% | Indian Township / 841 |
| 236. | 0.9% | Drew Plantation / 111 |
Please note that we only rank locations with 'Irish as First Ancestry Population Percentage' data. The rank above might not be a complete list. Locations without 'Irish 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.
