| Rank | Median Age ▲ | School District / Population |
| 1. | 21.80 | Oyster River Cooperative School District / 20,559 |
| 2. | 22.40 | Dresden School District / 11,263 |
| 2. | 22.40 | Hanover School District / 11,263 |
| 4. | 23.00 | Plymouth School District / 6,832 |
| 5. | 29.60 | Ashland School District / 1,543 |
| 6. | 32.50 | Keene School District / 23,547 |
| 7. | 34.20 | Henniker School District / 4,830 |
| 8. | 35.20 | Newmarket School District / 8,850 |
| 9. | 35.60 | Stoddard School District / 1,388 |
| 10. | 35.80 | Manchester School District / 109,791 |
| 11. | 36.40 | Pemi-Baker Regional School District / 18,448 |
| 12. | 36.50 | Mascenic Regional School District / 7,427 |
| 12. | 36.50 | Somersworth School District / 11,822 |
| 14. | 36.60 | Dover School District / 29,679 |
| 14. | 36.60 | Derry School District / 33,564 |
| 14. | 36.60 | John Stark Regional School District / 13,490 |
| 17. | 36.90 | Barnstead School District / 4,531 |
| 18. | 37.00 | Barrington School District / 8,454 |
| 19. | 37.40 | Litchfield School District / 8,150 |
| 20. | 37.50 | Hooksett School District / 13,330 |
| 20. | 37.50 | Pittsfield School District / 4,139 |
| 22. | 37.60 | Gilmanton School District / 3,687 |
| 23. | 37.70 | Milford School District / 14,914 |
| 23. | 37.70 | Hillsboro-Deering Cooperative School District / 8,042 |
| 23. | 37.70 | Weare School District / 8,660 |
| 23. | 37.70 | Franklin School District / 8,582 |
| 27. | 37.80 | Nashua School District / 87,042 |
| 28. | 37.90 | Jaffrey-Rindge Cooperative School District / 11,507 |
| 29. | 38.00 | Nottingham School District / 4,628 |
| 29. | 38.00 | Hudson School District / 24,323 |
| 31. | 38.30 | Farmington School District / 6,664 |
| 32. | 38.50 | Portsmouth School District / 20,963 |
| 32. | 38.50 | Goffstown School District / 17,635 |
| 32. | 38.50 | Fremont School District / 4,183 |
| 35. | 38.60 | Allenstown School District / 4,507 |
| 35. | 38.60 | Windsor School District / 106 |
| 37. | 38.70 | Strafford School District / 3,954 |
| 37. | 38.70 | Lebanon School District / 13,127 |
| 39. | 38.80 | Londonderry School District / 24,198 |
| 40. | 39.00 | New Boston School District / 5,132 |
| 41. | 39.10 | Pelham School District / 12,613 |
| 41. | 39.10 | Newfields School District / 1,803 |
| 43. | 39.30 | Epping School District / 6,298 |
| 43. | 39.30 | Thornton School District / 2,433 |
| 45. | 39.50 | Brookline School District / 4,868 |
| 45. | 39.50 | Milton School District / 4,516 |
| 47. | 39.60 | Epsom School District / 4,537 |
| 48. | 39.70 | Hill School District / 1,238 |
| 48. | 39.70 | Pembroke School District / 7,172 |
| 48. | 39.70 | Merrimack Valley School District / 17,854 |
| 51. | 39.80 | Chester School District / 4,633 |
| 52. | 40.00 | Concord School District / 37,416 |
| 52. | 40.00 | Merrimack School District / 25,579 |
| 54. | 40.20 | Sanborn Regional School District / 10,636 |
| 54. | 40.20 | Albany School District / 975 |
| 56. | 40.30 | Deerfield School District / 4,208 |
| 56. | 40.30 | Windham School District / 13,194 |
| 58. | 40.40 | Brentwood School District / 4,299 |
| 58. | 40.40 | Raymond School District / 10,142 |
| 60. | 40.60 | Chatham School District / 487 |
| 61. | 40.80 | Northwood School District / 4,176 |
| 62. | 40.90 | Rivendell Interstate School District / 1,222 |
| 63. | 41.00 | Cornish School District / 1,724 |
| 63. | 41.00 | Fall Mountain Regional School District / 12,378 |
| 63. | 41.00 | Campton School District / 3,247 |
| 66. | 41.10 | Claremont School District / 13,470 |
| 67. | 41.20 | Hollis-Brookline Cooperative School District / 12,484 |
| 68. | 41.30 | Auburn School District / 4,953 |
| 69. | 41.40 | Laconia School District / 16,219 |
| 70. | 41.50 | Rochester School District / 29,801 |
| 71. | 41.60 | Stratford School District / 948 |
| 71. | 41.60 | Name N/A / 353,507 |
| 73. | 41.70 | Dunbarton School District / 2,704 |
| 73. | 41.70 | Lincoln-Woodstock School District / 2,581 |
| 73. | 41.70 | Rollinsford School District / 2,577 |
| 76. | 41.80 | Hampton Falls School District / 2,347 |
| 77. | 41.90 | Monadnock Regional School District / 14,399 |
| 77. | 41.90 | Winchester School District / 4,354 |
| 77. | 41.90 | Middleton School District / 1,549 |
| 77. | 41.90 | Stewartstown School District / 1,103 |
| 77. | 41.90 | Mont Vernon School District / 2,456 |
| 82. | 42.00 | Timberlane Regional School District / 24,658 |
| 82. | 42.00 | Prospect Mountain High School Joint Maintenance Agreement District / 9,704 |
| 84. | 42.10 | Stratham School District / 7,161 |
| 85. | 42.20 | Shaker Regional School District / 9,845 |
| 86. | 42.30 | Salem School District / 28,899 |
| 86. | 42.30 | Greenland School District / 3,514 |
| 88. | 42.40 | Mascoma Valley Regional School District / 10,437 |
| 89. | 42.50 | North Hampton School District / 4,332 |
| 90. | 42.60 | Warren School District / 690 |
| 91. | 42.70 | White Mountain Regional School District / 8,257 |
| 91. | 42.70 | Bedford School District / 20,799 |
| 91. | 42.70 | Mason School District / 1,337 |
| 94. | 42.80 | Lyme School District / 2,094 |
| 95. | 43.00 | Souhegan Cooperative School District / 13,657 |
| 95. | 43.00 | Winnisquam Regional School District / 11,380 |
| 97. | 43.20 | Newport School District / 6,534 |
| 97. | 43.20 | Conway School District / 9,995 |
| 97. | 43.20 | Amherst School District / 11,201 |
| 100. | 43.30 | Hollis School District / 7,616 |
| 101. | 43.40 | Hampstead School District / 8,558 |
| 102. | 43.50 | Ellsworth School District / 82 |
| 102. | 43.50 | Exeter Regional Cooperative School District / 32,114 |
| 104. | 43.60 | Plainfield School District / 2,551 |
| 105. | 43.70 | Kensington School District / 2,153 |
| 106. | 43.80 | Gorham Randolph Shelburne Cooperative School District / 3,712 |
| 107. | 43.90 | Tamworth School District / 2,837 |
| 107. | 43.90 | Chichester School District / 2,505 |
| 109. | 44.00 | Piermont School District / 934 |
| 109. | 44.00 | Lyndeborough School District / 1,406 |
| 109. | 44.00 | Chesterfield School District / 3,631 |
| 109. | 44.00 | Northumberland School District / 2,397 |
| 113. | 44.10 | Wakefield School District / 5,001 |
| 114. | 44.20 | Wilton-Lyndeboro School District / 5,106 |
| 114. | 44.20 | Bow School District / 7,569 |
| 116. | 44.30 | Wilton School District / 3,700 |
| 117. | 44.50 | Bath School District / 835 |
| 118. | 44.70 | Hopkinton School District / 5,646 |
| 119. | 44.90 | Sunapee School District / 3,350 |
| 119. | 44.90 | Newfound Area School District / 10,504 |
| 121. | 45.00 | East Kingston School District / 2,304 |
| 122. | 45.10 | Contoocook Valley School District / 18,236 |
| 123. | 45.20 | Colebrook School District / 2,206 |
| 124. | 45.30 | Kearsarge Regional School District / 14,606 |
| 124. | 45.30 | Berlin School District / 10,208 |
| 124. | 45.30 | Candia School District / 3,942 |
| 127. | 45.60 | Haverhill Cooperative School District / 4,674 |
| 128. | 45.70 | Winnacunnet Cooperative School District / 30,785 |
| 128. | 45.70 | Goshen-Lempster Cooperative School District / 2,071 |
| 130. | 45.80 | Holderness School District / 1,830 |
| 130. | 45.80 | South Hampton School District / 725 |
| 130. | 45.80 | Hinsdale School District / 4,106 |
| 133. | 45.90 | Alton School District / 5,173 |
| 134. | 46.00 | Andover School District / 2,470 |
| 135. | 46.10 | Marlow School District / 875 |
| 135. | 46.10 | Landaff School District / 499 |
| 137. | 46.20 | Lisbon Regional School District / 2,246 |
| 138. | 46.30 | Hampton School District / 15,484 |
| 138. | 46.30 | Unity School District / 1,742 |
| 138. | 46.30 | Benton School District / 290 |
| 141. | 46.60 | Surry School District / 738 |
| 141. | 46.60 | Exeter School District / 14,394 |
| 141. | 46.60 | Grantham School District / 2,873 |
| 144. | 46.70 | Seabrook School District / 8,622 |
| 145. | 46.80 | Littleton School District / 5,949 |
| 145. | 46.80 | Governor Wentworth Regional School District / 17,675 |
| 147. | 47.10 | Bethlehem School District / 2,493 |
| 148. | 47.20 | Croydon School District / 721 |
| 148. | 47.20 | Inter-Lakes School District / 8,585 |
| 150. | 47.30 | Rumney School District / 1,648 |
| 150. | 47.30 | Milan School District / 1,313 |
| 150. | 47.30 | Madison School District / 2,446 |
| 153. | 47.60 | Columbia School District / 731 |
| 154. | 47.70 | Monroe School District / 984 |
| 155. | 48.30 | Gilford School District / 7,160 |
| 156. | 48.40 | Marlborough School District / 1,965 |
| 156. | 48.40 | Bartlett School District / 2,812 |
| 158. | 48.70 | Profile School District / 4,758 |
| 159. | 48.80 | Washington School District / 1,107 |
| 160. | 48.90 | Harrisville School District / 961 |
| 160. | 48.90 | Waterville Valley School District / 400 |
| 162. | 49.10 | Rye School District / 5,324 |
| 163. | 49.60 | Westmoreland School District / 1,904 |
| 164. | 50.00 | Newington School District / 721 |
| 164. | 50.00 | Dummer School District / 393 |
| 166. | 50.30 | Hart's Location School District / 37 |
| 167. | 51.00 | Lafayette Regional School District / 2,265 |
| 167. | 51.00 | Wentworth School District / 915 |
| 169. | 51.70 | Errol School District / 269 |
| 170. | 52.00 | Nelson School District / 720 |
| 171. | 52.10 | Jackson School District / 896 |
| 172. | 52.60 | Stark School District / 541 |
| 173. | 53.10 | Clarksville School District / 334 |
| 174. | 53.40 | Eaton School District / 415 |
| 175. | 55.00 | Moultonborough School District / 4,189 |
| 176. | 55.10 | New Castle School District / 772 |
| 177. | 58.10 | Pittsburg School District / 920 |
| 177. | 58.10 | Freedom School District / 1,066 |
| 179. | 69.50 | Coos County School District / 212 |
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.
*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.
