| Rank | Median Age ▲ | School District / Population |
| 1. | 21.70 | Oyster River Cooperative School District / 20,294 |
| 2. | 21.90 | Dresden School District / 11,098 |
| 2. | 21.90 | Hanover School District / 11,098 |
| 4. | 24.10 | Plymouth School District / 6,470 |
| 5. | 32.60 | Keene School District / 22,539 |
| 6. | 34.70 | Allenstown School District / 4,956 |
| 7. | 35.00 | Newmarket School District / 9,401 |
| 7. | 35.00 | Henniker School District / 5,015 |
| 9. | 35.40 | Manchester School District / 109,061 |
| 10. | 35.50 | Bath School District / 718 |
| 11. | 35.70 | Mascenic Regional School District / 9,058 |
| 12. | 36.00 | Dover School District / 28,595 |
| 13. | 36.30 | Milford School District / 15,006 |
| 14. | 36.60 | Derry School District / 34,194 |
| 15. | 36.80 | Goffstown School District / 17,694 |
| 15. | 36.80 | Londonderry School District / 24,954 |
| 17. | 36.90 | Lebanon School District / 12,762 |
| 17. | 36.90 | Nottingham School District / 4,471 |
| 19. | 37.00 | Jaffrey-Rindge Cooperative School District / 12,096 |
| 20. | 37.10 | Hudson School District / 24,755 |
| 20. | 37.10 | Hooksett School District / 13,724 |
| 20. | 37.10 | Barrington School District / 8,389 |
| 23. | 37.40 | Nashua School District / 87,032 |
| 24. | 37.50 | Pemi-Baker Regional School District / 17,294 |
| 24. | 37.50 | New Boston School District / 5,023 |
| 24. | 37.50 | Barnstead School District / 4,556 |
| 24. | 37.50 | Portsmouth School District / 20,557 |
| 28. | 37.60 | John Stark Regional School District / 14,052 |
| 28. | 37.60 | Somersworth School District / 11,876 |
| 30. | 37.70 | Epsom School District / 4,563 |
| 30. | 37.70 | Pembroke School District / 7,335 |
| 32. | 37.80 | Fremont School District / 4,083 |
| 32. | 37.80 | Litchfield School District / 8,593 |
| 34. | 38.20 | Hillsboro-Deering Cooperative School District / 7,743 |
| 34. | 38.20 | Milton School District / 4,509 |
| 34. | 38.20 | Weare School District / 9,037 |
| 37. | 38.30 | Thornton School District / 1,993 |
| 38. | 38.40 | Pelham School District / 12,558 |
| 39. | 38.50 | Newport School District / 6,500 |
| 39. | 38.50 | Brookline School District / 4,822 |
| 41. | 38.70 | Franklin School District / 8,748 |
| 41. | 38.70 | Merrimack School District / 26,579 |
| 43. | 38.80 | Rochester School District / 30,568 |
| 44. | 38.90 | Albany School District / 966 |
| 45. | 39.00 | Pittsfield School District / 4,367 |
| 45. | 39.00 | Concord School District / 37,109 |
| 47. | 39.10 | Gilmanton School District / 3,503 |
| 47. | 39.10 | Strafford School District / 4,029 |
| 49. | 39.20 | Campton School District / 2,976 |
| 49. | 39.20 | Newfields School District / 1,836 |
| 49. | 39.20 | Northwood School District / 4,077 |
| 52. | 39.30 | Lincoln-Woodstock School District / 2,705 |
| 53. | 39.40 | Merrimack Valley School District / 17,370 |
| 54. | 39.50 | Hill School District / 1,174 |
| 55. | 39.60 | Sanborn Regional School District / 10,756 |
| 56. | 39.70 | Chatham School District / 390 |
| 57. | 39.80 | Chester School District / 4,693 |
| 58. | 39.90 | Auburn School District / 5,157 |
| 59. | 40.10 | Claremont School District / 13,086 |
| 60. | 40.20 | Deerfield School District / 4,171 |
| 60. | 40.20 | Hollis-Brookline Cooperative School District / 12,561 |
| 62. | 40.40 | Raymond School District / 10,181 |
| 62. | 40.40 | Farmington School District / 6,621 |
| 64. | 40.50 | Prospect Mountain High School Joint Maintenance Agreement District / 9,621 |
| 65. | 40.60 | Mont Vernon School District / 2,728 |
| 65. | 40.60 | Laconia School District / 17,080 |
| 67. | 40.70 | Windham School District / 13,097 |
| 67. | 40.70 | Chichester School District / 2,533 |
| 69. | 40.80 | Winchester School District / 4,283 |
| 69. | 40.80 | Souhegan Cooperative School District / 14,455 |
| 71. | 40.90 | Fall Mountain Regional School District / 12,000 |
| 71. | 40.90 | Name N/A / 365,127 |
| 71. | 40.90 | Amherst School District / 11,727 |
| 71. | 40.90 | Brentwood School District / 3,852 |
| 75. | 41.00 | Piermont School District / 931 |
| 75. | 41.00 | Timberlane Regional School District / 24,490 |
| 77. | 41.10 | Mascoma Valley Regional School District / 10,078 |
| 77. | 41.10 | Epping School District / 6,228 |
| 77. | 41.10 | Salem School District / 29,423 |
| 80. | 41.30 | Hampton Falls School District / 2,342 |
| 81. | 41.40 | Ashland School District / 1,437 |
| 82. | 41.50 | Cornish School District / 1,750 |
| 83. | 41.60 | Stratham School District / 7,214 |
| 84. | 41.70 | Hollis School District / 7,739 |
| 85. | 41.80 | Greenland School District / 3,406 |
| 86. | 42.10 | Rollinsford School District / 2,629 |
| 86. | 42.10 | Hinsdale School District / 4,185 |
| 88. | 42.20 | Middleton School District / 1,630 |
| 88. | 42.20 | Bedford School District / 21,044 |
| 90. | 42.30 | Conway School District / 9,209 |
| 90. | 42.30 | Rivendell Interstate School District / 873 |
| 90. | 42.30 | Monadnock Regional School District / 15,555 |
| 93. | 42.40 | White Mountain Regional School District / 8,052 |
| 94. | 42.50 | Stratford School District / 1,013 |
| 95. | 42.60 | Andover School District / 2,279 |
| 95. | 42.60 | Warren School District / 687 |
| 95. | 42.60 | Exeter Regional Cooperative School District / 32,122 |
| 95. | 42.60 | North Hampton School District / 4,542 |
| 99. | 42.80 | Dunbarton School District / 2,624 |
| 100. | 43.00 | Hampstead School District / 8,879 |
| 101. | 43.10 | Winnisquam Regional School District / 11,540 |
| 102. | 43.30 | Kensington School District / 2,119 |
| 103. | 43.40 | East Kingston School District / 2,318 |
| 103. | 43.40 | Lyndeborough School District / 1,404 |
| 105. | 43.50 | Windsor School District / 74 |
| 106. | 43.60 | Tamworth School District / 2,526 |
| 107. | 43.70 | Newfound Area School District / 10,673 |
| 108. | 43.90 | Exeter School District / 14,783 |
| 108. | 43.90 | Alton School District / 5,065 |
| 110. | 44.00 | Shaker Regional School District / 9,488 |
| 110. | 44.00 | Lyme School District / 1,908 |
| 110. | 44.00 | Contoocook Valley School District / 18,350 |
| 110. | 44.00 | Goshen-Lempster Cooperative School District / 2,061 |
| 110. | 44.00 | Gorham Randolph Shelburne Cooperative School District / 3,589 |
| 115. | 44.10 | Chesterfield School District / 3,878 |
| 115. | 44.10 | Plainfield School District / 2,535 |
| 117. | 44.20 | Wakefield School District / 4,746 |
| 117. | 44.20 | Northumberland School District / 2,249 |
| 117. | 44.20 | Stewartstown School District / 969 |
| 117. | 44.20 | Wilton-Lyndeboro School District / 5,336 |
| 121. | 44.30 | Bethlehem School District / 2,444 |
| 122. | 44.40 | Candia School District / 4,170 |
| 122. | 44.40 | Littleton School District / 6,164 |
| 122. | 44.40 | Bow School District / 8,053 |
| 125. | 44.50 | Kearsarge Regional School District / 14,740 |
| 125. | 44.50 | Wilton School District / 3,932 |
| 127. | 44.60 | Croydon School District / 759 |
| 127. | 44.60 | Winnacunnet Cooperative School District / 30,777 |
| 129. | 44.80 | Lisbon Regional School District / 2,295 |
| 129. | 44.80 | Madison School District / 2,326 |
| 131. | 44.90 | Seabrook School District / 8,494 |
| 132. | 45.00 | Hampton School District / 15,399 |
| 133. | 45.10 | Holderness School District / 1,880 |
| 134. | 45.20 | Bartlett School District / 2,936 |
| 134. | 45.20 | Harrisville School District / 1,166 |
| 136. | 45.30 | South Hampton School District / 798 |
| 136. | 45.30 | Berlin School District / 9,673 |
| 138. | 45.40 | Monroe School District / 985 |
| 138. | 45.40 | Hopkinton School District / 5,603 |
| 138. | 45.40 | Colebrook School District / 2,141 |
| 141. | 45.60 | Inter-Lakes School District / 8,875 |
| 142. | 45.80 | Columbia School District / 841 |
| 143. | 45.90 | Gilford School District / 7,402 |
| 144. | 46.00 | Stoddard School District / 1,015 |
| 144. | 46.00 | Haverhill Cooperative School District / 4,619 |
| 146. | 46.20 | Milan School District / 1,271 |
| 146. | 46.20 | Sunapee School District / 3,352 |
| 148. | 46.30 | Landaff School District / 491 |
| 149. | 46.50 | Marlow School District / 872 |
| 150. | 47.00 | Governor Wentworth Regional School District / 17,932 |
| 151. | 47.20 | Profile School District / 4,509 |
| 152. | 47.40 | Rye School District / 5,177 |
| 152. | 47.40 | Hart's Location School District / 81 |
| 154. | 47.50 | Benton School District / 227 |
| 155. | 47.60 | Unity School District / 1,703 |
| 156. | 48.00 | Errol School District / 253 |
| 157. | 48.40 | Washington School District / 1,263 |
| 158. | 49.10 | Dummer School District / 351 |
| 159. | 49.20 | Westmoreland School District / 1,885 |
| 160. | 49.30 | Grantham School District / 2,516 |
| 160. | 49.30 | Ellsworth School District / 70 |
| 162. | 49.90 | Moultonborough School District / 4,983 |
| 163. | 50.00 | Clarksville School District / 330 |
| 164. | 50.20 | Rumney School District / 1,668 |
| 164. | 50.20 | Marlborough School District / 1,935 |
| 166. | 50.80 | Lafayette Regional School District / 2,065 |
| 167. | 50.90 | Jackson School District / 926 |
| 168. | 51.20 | Stark School District / 540 |
| 168. | 51.20 | Eaton School District / 381 |
| 170. | 51.30 | Wentworth School District / 870 |
| 171. | 51.80 | Waterville Valley School District / 329 |
| 172. | 52.40 | Nelson School District / 662 |
| 173. | 52.70 | Newington School District / 691 |
| 174. | 54.10 | Pittsburg School District / 773 |
| 175. | 56.80 | Freedom School District / 1,178 |
| 176. | 61.90 | New Castle School District / 727 |
| 177. | 69.80 | Coos County School District / 301 |
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.
