| Rank | Median Age ▲ | School District / Population |
| 1. | 22.20 | Castine / 1,366 |
| 2. | 24.30 | Regional School Unit 26 / 16,875 |
| 3. | 27.20 | Frenchboro / 61 |
| 4. | 27.80 | Indian Township / 718 |
| 5. | 29.30 | Pleasant Point / 749 |
| 6. | 31.30 | Dennistown Plantation / 33 |
| 7. | 33.60 | Indian Island / 610 |
| 8. | 35.00 | Drew Plantation / 46 |
| 9. | 35.20 | Regional School Unit 34 / 10,222 |
| 10. | 36.70 | Portland / 66,194 |
| 10. | 36.70 | Bangor / 33,039 |
| 12. | 36.80 | Waterville / 15,722 |
| 13. | 37.40 | Lewiston / 36,592 |
| 14. | 37.70 | Machias / 2,221 |
| 15. | 38.00 | Gorham / 16,381 |
| 16. | 38.30 | Biddeford / 21,277 |
| 17. | 39.30 | School Administrative District 23 / 5,645 |
| 18. | 39.40 | Lisbon / 9,009 |
| 18. | 39.40 | South Portland / 25,002 |
| 18. | 39.40 | Westbrook / 17,494 |
| 21. | 39.70 | Milford / 3,070 |
| 22. | 39.90 | Auburn / 23,055 |
| 23. | 40.00 | Nashville Plantation / 46 |
| 23. | 40.00 | School Administrative District 06 / 25,907 |
| 23. | 40.00 | School Administrative District 60 / 17,853 |
| 26. | 40.10 | School Administrative District 15 / 13,303 |
| 27. | 40.20 | Greenbush / 1,491 |
| 28. | 40.30 | School Administrative District 64 / 8,254 |
| 29. | 40.40 | Hermon / 5,416 |
| 30. | 40.50 | School Administrative District 09 / 17,838 |
| 30. | 40.50 | Sanford / 20,798 |
| 32. | 40.60 | School Administrative District 57 / 22,138 |
| 33. | 40.80 | Regional School Unit 14 / 21,437 |
| 33. | 40.80 | School Administrative District 36 / 5,282 |
| 35. | 41.00 | Baring Plantation / 251 |
| 35. | 41.00 | School Administrative District 53 / 6,231 |
| 37. | 41.10 | School Administrative District 22 / 12,565 |
| 37. | 41.10 | Brewer / 9,482 |
| 39. | 41.40 | School Administrative District 03 / 10,767 |
| 39. | 41.40 | Brunswick / 20,278 |
| 41. | 41.60 | School Administrative District 01 / 13,082 |
| 42. | 41.70 | School Administrative District 49 / 14,994 |
| 42. | 41.70 | School Administrative District 52 / 12,410 |
| 44. | 41.80 | Regional School Unit 04 / 10,116 |
| 45. | 42.20 | Hancock Unorganized Territory / 213 |
| 46. | 42.30 | Regional School Unit 16 / 11,014 |
| 47. | 42.50 | Easton / 1,287 |
| 47. | 42.50 | Regional School Unit 18 / 18,975 |
| 47. | 42.50 | School Administrative District 11 / 13,712 |
| 50. | 42.60 | Regional School Unit 39 / 10,756 |
| 51. | 42.70 | School Administrative District 35 / 13,424 |
| 51. | 42.70 | School Administrative District 54 / 17,242 |
| 53. | 43.00 | Appleton / 1,316 |
| 53. | 43.00 | Marshfield / 518 |
| 55. | 43.10 | School Administrative District 40 / 14,764 |
| 55. | 43.10 | School Administrative District 55 / 7,944 |
| 55. | 43.10 | Regional School Unit 19 / 15,053 |
| 58. | 43.20 | Augusta / 19,136 |
| 58. | 43.20 | Hope / 1,536 |
| 58. | 43.20 | Kittery / 9,490 |
| 61. | 43.30 | School Administrative District 59 / 6,584 |
| 61. | 43.30 | Machiasport / 1,119 |
| 61. | 43.30 | School Administrative District 29 / 8,099 |
| 61. | 43.30 | Jay / 4,851 |
| 65. | 43.50 | Regional School Unit 23 / 29,071 |
| 65. | 43.50 | School Administrative District 17 / 23,588 |
| 65. | 43.50 | Orrington / 3,733 |
| 68. | 43.60 | Winslow / 7,794 |
| 69. | 43.70 | Regional School Unit 02 / 14,524 |
| 69. | 43.70 | Regional School Unit 05 / 13,201 |
| 71. | 43.80 | School Administrative District 20 / 3,496 |
| 71. | 43.80 | School Administrative District 67 / 6,318 |
| 73. | 44.00 | Perry / 889 |
| 73. | 44.00 | School Administrative District 42 / 2,219 |
| 73. | 44.00 | Vassalboro / 4,340 |
| 76. | 44.10 | Regional School Unit 12 / 14,838 |
| 77. | 44.20 | School Administrative District 51 / 10,779 |
| 78. | 44.40 | School Administrative District 61 / 14,543 |
| 79. | 44.50 | Scarborough / 18,919 |
| 79. | 44.50 | Coplin Plantation / 166 |
| 79. | 44.50 | Regional School Unit 01 / 16,106 |
| 79. | 44.50 | School Administrative District 07 / 355 |
| 79. | 44.50 | School Administrative District 41 / 4,624 |
| 84. | 44.60 | East Machias / 1,368 |
| 85. | 44.70 | Regional School Unit 24 / 19,403 |
| 86. | 44.80 | Woodville / 248 |
| 86. | 44.80 | School Administrative District 68 / 6,938 |
| 86. | 44.80 | School Administrative District 63 / 6,222 |
| 89. | 44.90 | School Administrative District 46 / 6,580 |
| 89. | 44.90 | Princeton / 832 |
| 91. | 45.00 | School Administrative District 12 / 1,080 |
| 91. | 45.00 | Regional School Unit 10 / 19,048 |
| 93. | 45.10 | Regional School Unit 25 / 8,402 |
| 93. | 45.10 | School Administrative District 45 / 2,356 |
| 93. | 45.10 | School Administrative District 08 / 1,171 |
| 96. | 45.20 | Cutler / 507 |
| 96. | 45.20 | Oxford Unorganized Territory / 746 |
| 96. | 45.20 | Jonesboro / 583 |
| 99. | 45.30 | Bar Harbor / 5,235 |
| 99. | 45.30 | Hersey / 83 |
| 99. | 45.30 | Calais / 3,123 |
| 99. | 45.30 | Caswell / 306 |
| 99. | 45.30 | Falmouth / 11,185 |
| 104. | 45.40 | School Administrative District 31 / 3,813 |
| 105. | 45.50 | Regional School Unit 20 / 18,124 |
| 105. | 45.50 | School Administrative District 27 / 6,804 |
| 107. | 45.60 | Regional School Unit 38 / 8,007 |
| 108. | 45.70 | Acton / 2,447 |
| 109. | 45.80 | School Administrative District 58 / 4,317 |
| 109. | 45.80 | Deblois / 57 |
| 109. | 45.80 | Monhegan Plantation / 69 |
| 109. | 45.80 | Trenton / 1,481 |
| 109. | 45.80 | School Administrative District 72 / 8,346 |
| 109. | 45.80 | School Administrative District 44 / 5,864 |
| 115. | 45.90 | Yarmouth / 8,349 |
| 115. | 45.90 | Sedgwick / 1,196 |
| 117. | 46.00 | Jefferson / 2,427 |
| 117. | 46.00 | Winthrop / 6,092 |
| 119. | 46.10 | School Administrative District 37 / 5,901 |
| 119. | 46.10 | School Administrative District 74 / 5,221 |
| 119. | 46.10 | Woodland / 1,213 |
| 122. | 46.20 | School Administrative District 13 / 1,434 |
| 122. | 46.20 | Dedham / 1,681 |
| 124. | 46.30 | School Administrative District 30 / 1,823 |
| 124. | 46.30 | School Administrative District 76 / 332 |
| 124. | 46.30 | Southern Aroostook Community School District / 2,771 |
| 124. | 46.30 | School Administrative District 75 / 19,474 |
| 128. | 46.40 | Regional School Unit 13 / 17,341 |
| 128. | 46.40 | Edgecomb / 1,249 |
| 130. | 46.50 | Medford / 254 |
| 130. | 46.50 | School Administrative District 70 / 3,784 |
| 130. | 46.50 | Gilead / 209 |
| 133. | 46.70 | Franklin Unorganized Territory / 1,026 |
| 133. | 46.70 | Bridgewater / 610 |
| 135. | 46.80 | Kennebec Unorganized Territory / 43 |
| 135. | 46.80 | Cape Elizabeth / 9,015 |
| 135. | 46.80 | Baileyville / 1,521 |
| 138. | 46.90 | Nobleboro / 1,643 |
| 139. | 47.00 | Whitneyville / 220 |
| 139. | 47.00 | School Administrative District 65 / 74 |
| 141. | 47.10 | Airline Community School District / 504 |
| 141. | 47.10 | Otis / 672 |
| 143. | 47.20 | Southwest Harbor / 1,764 |
| 144. | 47.30 | Mount Desert Community School District / 10,615 |
| 144. | 47.30 | Orient / 147 |
| 146. | 47.40 | Washington Unorganized Territory / 1,227 |
| 147. | 47.50 | Lincolnville / 2,164 |
| 148. | 47.60 | Sandy River Plantation / 133 |
| 148. | 47.60 | School Administrative District 04 / 5,143 |
| 150. | 47.70 | Regional School Unit 21 / 18,294 |
| 150. | 47.70 | Cranberry Isles / 141 |
| 152. | 47.80 | Medway / 1,349 |
| 152. | 47.80 | School Administrative District 25 / 2,462 |
| 154. | 47.90 | Reed Plantation / 161 |
| 155. | 48.00 | Whiting / 487 |
| 155. | 48.00 | Fayette / 1,140 |
| 157. | 48.10 | Waite / 101 |
| 157. | 48.10 | Beals / 508 |
| 159. | 48.30 | Vanceboro / 140 |
| 159. | 48.30 | School Administrative District 14 / 817 |
| 159. | 48.30 | School Administrative District 33 / 1,834 |
| 159. | 48.30 | Macwahoc Plantation / 79 |
| 159. | 48.30 | New Sweden / 602 |
| 164. | 48.50 | Tremont / 1,563 |
| 164. | 48.50 | Pembroke / 840 |
| 166. | 48.60 | Robbinston / 574 |
| 166. | 48.60 | East Millinocket / 1,723 |
| 166. | 48.60 | Dennysville / 342 |
| 166. | 48.60 | School Administrative District 32 / 2,089 |
| 170. | 48.90 | Carroll Plantation / 153 |
| 171. | 49.00 | Jonesport / 1,370 |
| 171. | 49.00 | Surry / 1,466 |
| 173. | 49.30 | East Range Community School District / 261 |
| 173. | 49.30 | Grand Isle / 467 |
| 173. | 49.30 | Penobscot Unorganized Territory / 1,476 |
| 173. | 49.30 | York / 12,529 |
| 177. | 49.40 | Harmony / 939 |
| 178. | 49.50 | Blue Hill / 2,686 |
| 178. | 49.50 | Isle au Haut / 73 |
| 180. | 49.60 | Georgetown / 1,042 |
| 180. | 49.60 | Newcastle / 1,752 |
| 182. | 49.70 | Wells-Ogunquit Community School District / 10,481 |
| 183. | 49.80 | Alexander / 499 |
| 184. | 50.00 | Carrabassett Valley / 781 |
| 184. | 50.00 | Charlotte / 332 |
| 186. | 50.20 | Great Salt Bay Community School District / 4,776 |
| 187. | 50.30 | Bremen / 806 |
| 188. | 50.50 | Crawford / 105 |
| 189. | 50.70 | Mount Desert / 2,053 |
| 189. | 50.70 | Damariscotta / 2,218 |
| 191. | 51.20 | Madawaska / 4,035 |
| 191. | 51.20 | School Administrative District 28 / 8,180 |
| 193. | 51.30 | Deer Isle-Stonington Community School District / 3,018 |
| 194. | 51.40 | Rangeley / 1,168 |
| 195. | 51.50 | Lowell / 358 |
| 195. | 51.50 | Millinocket / 4,506 |
| 197. | 51.60 | Cooper / 154 |
| 198. | 51.70 | Roque Bluffs / 303 |
| 199. | 51.90 | Penobscot / 1,263 |
| 199. | 51.90 | School Administrative District 24 / 2,493 |
| 201. | 52.00 | Long Island / 230 |
| 201. | 52.00 | Willimantic / 150 |
| 203. | 52.10 | Islesboro / 566 |
| 204. | 52.30 | Meddybemps / 157 |
| 204. | 52.30 | Greenville / 1,646 |
| 206. | 52.70 | Dallas Plantation / 309 |
| 207. | 52.80 | Aroostook Unorganized Territory / 1,565 |
| 208. | 52.90 | Brooklin / 824 |
| 209. | 53.00 | Magalloway Plantation / 46 |
| 209. | 53.00 | Brooksville / 934 |
| 211. | 53.30 | Boothbay-Boothbay Harbor Community School District / 5,285 |
| 212. | 53.40 | Somerset Unorganized Territory / 838 |
| 213. | 53.50 | Highland Plantation / 73 |
| 214. | 53.60 | Shirley / 233 |
| 215. | 54.00 | School Administrative District 19 / 1,359 |
| 216. | 54.10 | South Bristol / 892 |
| 216. | 54.10 | Bristol / 2,755 |
| 218. | 54.30 | Talmadge / 64 |
| 219. | 54.50 | Lake View Plantation / 89 |
| 219. | 54.50 | Eastport / 1,331 |
| 219. | 54.50 | Wesley / 98 |
| 222. | 54.80 | Piscataquis Unorganized Territory / 771 |
| 222. | 54.80 | West Forks Plantation / 60 |
| 224. | 55.00 | Bancroft / 68 |
| 224. | 55.00 | Westmanland / 62 |
| 226. | 55.10 | Caratunk / 69 |
| 227. | 55.20 | Northfield / 148 |
| 228. | 55.80 | Great Lake Stream Plantation / 109 |
| 229. | 56.00 | Moro Plantation / 38 |
| 230. | 56.10 | Pleasant Ridge Plantation / 93 |
| 231. | 57.10 | Upton / 113 |
| 232. | 57.50 | Knox Unorganized Territory / 1 |
| 233. | 57.70 | Beddington / 50 |
| 234. | 57.80 | Chebeague Island / 338 |
| 234. | 57.80 | School Administration District 10 / 239 |
| 236. | 58.30 | Rangeley Plantation / 189 |
| 237. | 58.50 | Lincoln Plantation / 45 |
| 238. | 58.80 | Beaver Cove / 122 |
| 239. | 59.00 | Kingsbury Plantation / 28 |
| 240. | 59.30 | Lakeville / 105 |
| 241. | 59.50 | Seboeis Plantation / 35 |
| 242. | 60.10 | Southport / 606 |
| 243. | 60.50 | Lincoln Unorganized Territory / 1 |
| 244. | 61.50 | The Forks Plantation / 37 |
| 244. | 61.50 | Bowerbank / 116 |
| 246. | 70.50 | Glenwood Plantation / 3 |
Please note that we only rank locations with 'Median Age' data. The rank above might not be a complete list. Locations without 'Median Age' data are not listed.
