| Rank | Irish as First Ancestry Population Percentage ▼ | School District / Population |
| 1. | 48.7% | Monhegan Plantation / 40 |
| 2. | 45.0% | Macwahoc Plantation / 46 |
| 3. | 43.8% | School Administration District 10 / 191 |
| 4. | 42.9% | Pleasant Ridge Plantation / 97 |
| 5. | 40.0% | Kingsbury Plantation / 10 |
| 6. | 39.8% | Woodville / 274 |
| 7. | 35.6% | Bowerbank / 98 |
| 8. | 34.5% | Carroll Plantation / 91 |
| 9. | 33.3% | Hersey / 51 |
| 10. | 33.2% | Carrabassett Valley / 470 |
| 11. | 32.2% | School Administrative District 70 / 3,645 |
| 12. | 32.1% | Rangeley / 1,177 |
| 13. | 31.5% | Easton / 1,123 |
| 14. | 31.0% | School Administrative District 42 / 2,350 |
| 15. | 30.9% | Rangeley Plantation / 109 |
| 16. | 30.8% | Baring Plantation / 316 |
| 17. | 30.1% | Tremont / 1,412 |
| 18. | 29.4% | Frenchboro / 65 |
| 19. | 29.2% | East Machias / 1,344 |
| 20. | 29.2% | South Portland / 24,804 |
| 21. | 28.9% | Eastport / 1,425 |
| 22. | 28.8% | Southern Aroostook Community School District / 3,049 |
| 23. | 28.6% | Caratunk / 64 |
| 24. | 28.6% | Lincolnville / 1,846 |
| 25. | 28.5% | School Administrative District 29 / 8,208 |
| 26. | 28.3% | Newcastle / 1,576 |
| 27. | 28.2% | Damariscotta / 2,216 |
| 28. | 28.2% | School Administrative District 13 / 1,314 |
| 29. | 28.0% | Robbinston / 592 |
| 30. | 27.4% | Lowell / 223 |
| 31. | 27.3% | School Administrative District 20 / 3,513 |
| 32. | 27.0% | Cape Elizabeth / 9,056 |
| 33. | 26.8% | Marshfield / 494 |
| 34. | 26.3% | School Administrative District 07 / 461 |
| 35. | 26.1% | School Administrative District 61 / 14,134 |
| 36. | 26.0% | Brewer / 9,433 |
| 37. | 25.7% | Cutler / 644 |
| 38. | 25.6% | Roque Bluffs / 251 |
| 39. | 25.6% | Great Salt Bay Community School District / 4,467 |
| 40. | 25.5% | Perry / 943 |
| 41. | 25.5% | Regional School Unit 21 / 18,423 |
| 42. | 25.4% | York / 12,720 |
| 43. | 25.3% | Yarmouth / 8,390 |
| 44. | 25.1% | Shirley / 263 |
| 45. | 25.0% | Long Island / 261 |
| 45. | 25.0% | Northfield / 171 |
| 45. | 25.0% | West Forks Plantation / 24 |
| 48. | 24.8% | Alexander / 350 |
| 49. | 24.7% | School Administrative District 19 / 1,423 |
| 50. | 24.6% | School Administrative District 68 / 7,014 |
| 51. | 24.5% | School Administrative District 64 / 7,993 |
| 52. | 24.3% | Regional School Unit 12 / 14,914 |
| 53. | 24.3% | Gorham / 16,065 |
| 54. | 24.1% | Portland / 66,138 |
| 55. | 24.1% | Jefferson / 2,529 |
| 56. | 24.0% | School Administrative District 06 / 25,893 |
| 57. | 24.0% | Scarborough / 18,637 |
| 58. | 23.9% | East Range Community School District / 232 |
| 59. | 23.9% | Dennysville / 399 |
| 60. | 23.8% | School Administrative District 51 / 10,679 |
| 61. | 23.8% | Regional School Unit 39 / 10,958 |
| 62. | 23.6% | Wesley / 84 |
| 63. | 23.4% | Reed Plantation / 108 |
| 64. | 22.9% | Bangor / 32,899 |
| 65. | 22.8% | School Administrative District 74 / 5,346 |
| 66. | 22.6% | Augusta / 19,150 |
| 67. | 22.6% | Woodland / 1,085 |
| 68. | 22.6% | School Administrative District 03 / 10,528 |
| 69. | 22.5% | School Administrative District 28 / 8,373 |
| 70. | 22.5% | School Administrative District 65 / 89 |
| 71. | 22.4% | Westbrook / 17,314 |
| 72. | 22.4% | Hope / 1,521 |
| 73. | 22.3% | Sedgwick / 1,192 |
| 74. | 22.3% | School Administrative District 60 / 17,650 |
| 75. | 22.1% | Calais / 3,192 |
| 76. | 22.1% | Beddington / 77 |
| 77. | 22.1% | Dedham / 2,139 |
| 78. | 21.8% | Regional School Unit 26 / 16,708 |
| 79. | 21.8% | Greenville / 1,606 |
| 80. | 21.8% | Name N/A / 14,506 |
| 81. | 21.7% | Drew Plantation / 46 |
| 82. | 21.7% | Appleton / 1,437 |
| 83. | 21.6% | Regional School Unit 23 / 29,367 |
| 84. | 21.5% | Bridgewater / 640 |
| 85. | 21.4% | Waite / 60 |
| 85. | 21.4% | The Forks Plantation / 28 |
| 87. | 21.3% | Regional School Unit 13 / 17,358 |
| 88. | 21.2% | Cooper / 202 |
| 89. | 20.9% | School Administrative District 35 / 13,431 |
| 90. | 20.8% | School Administrative District 32 / 2,139 |
| 91. | 20.8% | Wells-Ogunquit Community School District / 10,763 |
| 92. | 20.7% | Franklin Unorganized Territory / 865 |
| 93. | 20.6% | School Administrative District 11 / 13,922 |
| 94. | 20.6% | Bar Harbor / 5,194 |
| 95. | 20.5% | Acton / 2,001 |
| 96. | 20.5% | Meddybemps / 136 |
| 97. | 20.5% | Winthrop / 6,149 |
| 98. | 20.5% | School Administrative District 59 / 6,441 |
| 99. | 20.4% | Hermon / 5,244 |
| 100. | 20.3% | School Administrative District 22 / 12,468 |
| 101. | 20.2% | Islesboro / 649 |
| 102. | 20.2% | Great Lake Stream Plantation / 122 |
| 103. | 20.2% | Kittery / 9,606 |
| 104. | 20.2% | School Administrative District 57 / 21,609 |
| 104. | 20.2% | Boothbay-Boothbay Harbor Community School District / 5,544 |
| 106. | 20.1% | East Millinocket / 1,900 |
| 107. | 20.1% | Baileyville / 1,554 |
| 108. | 20.1% | Mount Desert Community School District / 10,039 |
| 109. | 20.0% | Regional School Unit 01 / 16,704 |
| 110. | 19.9% | School Administrative District 55 / 8,348 |
| 111. | 19.7% | Aroostook Unorganized Territory / 1,513 |
| 111. | 19.7% | Medway / 1,223 |
| 113. | 19.7% | Regional School Unit 05 / 13,211 |
| 114. | 19.7% | School Administrative District 63 / 6,002 |
| 115. | 19.6% | School Administrative District 25 / 2,761 |
| 115. | 19.6% | Penobscot Unorganized Territory / 1,562 |
| 117. | 19.5% | Machias / 2,416 |
| 118. | 19.4% | Chebeague Island / 240 |
| 119. | 19.4% | Kennebec Unorganized Territory / 70 |
| 120. | 19.3% | School Administrative District 09 / 18,036 |
| 121. | 19.3% | Jonesport / 1,338 |
| 121. | 19.3% | School Administrative District 23 / 5,475 |
| 123. | 19.3% | Regional School Unit 02 / 14,748 |
| 124. | 19.1% | Greenbush / 1,382 |
| 125. | 19.1% | Regional School Unit 14 / 21,108 |
| 125. | 19.1% | Regional School Unit 24 / 19,161 |
| 127. | 19.1% | School Administrative District 45 / 2,504 |
| 128. | 19.0% | Sanford / 21,035 |
| 129. | 18.9% | Regional School Unit 10 / 18,964 |
| 130. | 18.8% | Brunswick / 20,557 |
| 131. | 18.6% | Whitneyville / 235 |
| 132. | 18.5% | School Administrative District 01 / 12,845 |
| 133. | 18.4% | Machiasport / 1,043 |
| 134. | 18.3% | School Administrative District 75 / 19,689 |
| 135. | 18.3% | Pembroke / 980 |
| 136. | 18.2% | Regional School Unit 20 / 18,312 |
| 136. | 18.2% | Lisbon / 9,092 |
| 138. | 18.2% | Trenton / 1,453 |
| 139. | 18.1% | School Administrative District 12 / 949 |
| 140. | 18.1% | Southport / 541 |
| 140. | 18.1% | School Administrative District 72 / 8,060 |
| 142. | 18.0% | Charlotte / 311 |
| 143. | 17.9% | School Administrative District 08 / 1,090 |
| 144. | 17.9% | Vassalboro / 4,311 |
| 145. | 17.7% | School Administrative District 17 / 23,682 |
| 146. | 17.7% | Brooklin / 1,022 |
| 147. | 17.7% | School Administrative District 37 / 5,522 |
| 148. | 17.7% | Dallas Plantation / 290 |
| 149. | 17.6% | Orrington / 3,710 |
| 150. | 17.6% | Washington Unorganized Territory / 1,233 |
| 151. | 17.4% | School Administrative District 40 / 14,808 |
| 152. | 17.3% | Fayette / 1,281 |
| 153. | 17.3% | Auburn / 23,279 |
| 154. | 17.3% | School Administrative District 46 / 6,645 |
| 155. | 17.2% | School Administrative District 41 / 4,842 |
| 155. | 17.2% | Edgecomb / 1,143 |
| 157. | 17.1% | School Administrative District 44 / 6,036 |
| 158. | 17.1% | Bristol / 2,766 |
| 159. | 17.1% | Regional School Unit 04 / 10,221 |
| 160. | 17.0% | Lewiston / 36,684 |
| 160. | 17.0% | Hancock Unorganized Territory / 168 |
| 162. | 17.0% | Regional School Unit 18 / 18,880 |
| 163. | 17.0% | Regional School Unit 16 / 10,969 |
| 164. | 17.0% | Regional School Unit 34 / 10,108 |
| 165. | 16.8% | Vanceboro / 129 |
| 166. | 16.7% | School Administrative District 54 / 17,286 |
| 167. | 16.7% | Falmouth / 11,086 |
| 168. | 16.7% | Deblois / 50 |
| 169. | 16.6% | School Administrative District 67 / 6,652 |
| 170. | 16.5% | Oxford Unorganized Territory / 602 |
| 171. | 16.5% | Waterville / 15,777 |
| 172. | 16.4% | Regional School Unit 19 / 14,947 |
| 173. | 16.3% | School Administrative District 52 / 12,057 |
| 173. | 16.3% | South Bristol / 976 |
| 175. | 16.3% | Airline Community School District / 458 |
| 176. | 16.2% | School Administrative District 76 / 443 |
| 177. | 16.2% | Georgetown / 712 |
| 178. | 16.2% | School Administrative District 53 / 6,142 |
| 179. | 16.1% | School Administrative District 15 / 13,059 |
| 180. | 16.1% | Otis / 400 |
| 181. | 16.1% | Regional School Unit 38 / 7,458 |
| 182. | 16.0% | Nobleboro / 1,647 |
| 183. | 15.9% | Nashville Plantation / 67 |
| 184. | 15.8% | Jonesboro / 653 |
| 185. | 15.7% | Brooksville / 1,005 |
| 186. | 15.6% | Beals / 602 |
| 187. | 15.6% | Blue Hill / 2,649 |
| 188. | 15.4% | Surry / 1,666 |
| 189. | 15.4% | Mount Desert / 1,708 |
| 190. | 15.3% | School Administrative District 31 / 3,830 |
| 191. | 15.3% | School Administrative District 30 / 1,876 |
| 192. | 15.3% | Isle au Haut / 85 |
| 193. | 15.2% | Piscataquis Unorganized Territory / 936 |
| 194. | 15.0% | Biddeford / 21,490 |
| 195. | 14.9% | Castine / 1,483 |
| 196. | 14.8% | School Administrative District 58 / 4,823 |
| 197. | 14.7% | Southwest Harbor / 1,725 |
| 198. | 14.6% | Somerset Unorganized Territory / 876 |
| 199. | 14.4% | School Administrative District 49 / 14,919 |
| 200. | 14.3% | Princeton / 898 |
| 201. | 14.3% | Milford / 3,055 |
| 202. | 14.3% | Deer Isle-Stonington Community School District / 3,084 |
| 203. | 14.1% | Winslow / 7,823 |
| 204. | 14.0% | Whiting / 528 |
| 205. | 13.8% | Medford / 224 |
| 206. | 13.4% | Millinocket / 4,655 |
| 207. | 13.3% | School Administrative District 36 / 5,322 |
| 208. | 13.1% | School Administrative District 04 / 4,994 |
| 209. | 12.9% | Caswell / 340 |
| 210. | 12.9% | Cranberry Isles / 101 |
| 211. | 12.3% | New Sweden / 513 |
| 212. | 12.1% | Lincoln Plantation / 66 |
| 213. | 11.9% | School Administrative District 14 / 803 |
| 214. | 11.8% | Regional School Unit 25 / 8,461 |
| 215. | 11.6% | Penobscot / 1,377 |
| 216. | 11.4% | Bremen / 675 |
| 217. | 11.2% | Jay / 4,890 |
| 218. | 10.8% | Orient / 116 |
| 219. | 10.4% | Sandy River Plantation / 94 |
| 220. | 10.2% | Westmanland / 90 |
| 221. | 10.0% | Crawford / 109 |
| 221. | 10.0% | Seboeis Plantation / 36 |
| 223. | 9.8% | Indian Island / 598 |
| 224. | 9.6% | Coplin Plantation / 97 |
| 225. | 9.5% | Lake View Plantation / 100 |
| 226. | 8.4% | Gilead / 145 |
| 227. | 7.6% | Harmony / 1,000 |
| 228. | 7.6% | Highland Plantation / 56 |
| 229. | 7.4% | School Administrative District 24 / 2,987 |
| 230. | 6.7% | School Administrative District 27 / 6,683 |
| 231. | 5.6% | Upton / 75 |
| 232. | 5.5% | Bancroft / 62 |
| 233. | 5.1% | Grand Isle / 532 |
| 234. | 4.8% | School Administrative District 33 / 1,877 |
| 235. | 4.2% | Madawaska / 4,141 |
| 236. | 3.9% | Willimantic / 132 |
| 237. | 3.0% | Lakeville / 72 |
| 238. | 3.0% | Indian Township / 767 |
| 239. | 2.6% | Beaver Cove / 126 |
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.
