| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.33 | Brentwood School District / 4,486 |
| 2. | 3.31 | Brookline School District / 4,991 |
| 3. | 3.28 | Pelham School District / 12,897 |
| 3. | 3.28 | Chester School District / 4,768 |
| 5. | 3.25 | Windham School District / 13,592 |
| 6. | 3.24 | Mascenic Regional School District / 7,204 |
| 7. | 3.22 | Litchfield School District / 8,271 |
| 8. | 3.21 | Londonderry School District / 24,129 |
| 9. | 3.19 | Bedford School District / 21,203 |
| 9. | 3.19 | Newfields School District / 1,680 |
| 11. | 3.18 | Mont Vernon School District / 2,409 |
| 12. | 3.15 | Hollis-Brookline Cooperative School District / 12,675 |
| 12. | 3.15 | New Boston School District / 5,321 |
| 14. | 3.14 | Kensington School District / 2,124 |
| 15. | 3.13 | Hudson School District / 24,467 |
| 15. | 3.13 | Weare School District / 8,785 |
| 17. | 3.10 | Fremont School District / 4,283 |
| 17. | 3.10 | Derry School District / 33,109 |
| 19. | 3.09 | Deerfield School District / 4,280 |
| 19. | 3.09 | Bow School District / 7,519 |
| 21. | 3.08 | Sanborn Regional School District / 10,628 |
| 21. | 3.08 | Stratham School District / 7,255 |
| 21. | 3.08 | Auburn School District / 4,953 |
| 21. | 3.08 | Souhegan Cooperative School District / 13,610 |
| 21. | 3.08 | Hampton Falls School District / 2,236 |
| 26. | 3.07 | Salem School District / 28,776 |
| 26. | 3.07 | Timberlane Regional School District / 24,733 |
| 28. | 3.06 | Amherst School District / 11,201 |
| 28. | 3.06 | Merrimack School District / 25,494 |
| 28. | 3.06 | John Stark Regional School District / 13,621 |
| 31. | 3.05 | Exeter Regional Cooperative School District / 32,208 |
| 31. | 3.05 | Chichester School District / 2,523 |
| 31. | 3.05 | Hollis School District / 7,684 |
| 34. | 3.04 | Milford School District / 15,115 |
| 34. | 3.04 | Nottingham School District / 4,785 |
| 34. | 3.04 | Candia School District / 3,909 |
| 37. | 3.02 | Jaffrey-Rindge Cooperative School District / 11,471 |
| 37. | 3.02 | Pembroke School District / 7,115 |
| 37. | 3.02 | Wilton School District / 3,677 |
| 37. | 3.02 | Barrington School District / 8,576 |
| 41. | 3.01 | Hooksett School District / 13,451 |
| 41. | 3.01 | Nashua School District / 86,494 |
| 41. | 3.01 | Hampstead School District / 8,523 |
| 41. | 3.01 | Strafford School District / 3,991 |
| 41. | 3.01 | Farmington School District / 6,786 |
| 46. | 3.00 | East Kingston School District / 2,357 |
| 46. | 3.00 | Merrimack Valley School District / 17,407 |
| 46. | 3.00 | Goffstown School District / 17,651 |
| 46. | 3.00 | Barnstead School District / 4,593 |
| 46. | 3.00 | Pittsfield School District / 4,106 |
| 51. | 2.99 | South Hampton School District / 814 |
| 51. | 2.99 | Dunbarton School District / 2,758 |
| 51. | 2.99 | Oyster River Cooperative School District / 20,739 |
| 51. | 2.99 | Northwood School District / 4,241 |
| 51. | 2.99 | Manchester School District / 109,565 |
| 51. | 2.99 | Hill School District / 1,089 |
| 51. | 2.99 | Epping School District / 6,411 |
| 58. | 2.98 | Wilton-Lyndeboro School District / 5,360 |
| 58. | 2.98 | Raymond School District / 10,138 |
| 60. | 2.97 | Winchester School District / 4,341 |
| 60. | 2.97 | Greenland School District / 3,549 |
| 62. | 2.96 | Middleton School District / 1,783 |
| 62. | 2.96 | Epsom School District / 4,566 |
| 62. | 2.96 | Mason School District / 1,382 |
| 65. | 2.95 | Dresden School District / 11,260 |
| 65. | 2.95 | Somersworth School District / 11,766 |
| 65. | 2.95 | Hanover School District / 11,260 |
| 65. | 2.95 | Hillsboro-Deering Cooperative School District / 7,923 |
| 69. | 2.93 | Milton School District / 4,598 |
| 69. | 2.93 | Franklin School District / 8,477 |
| 69. | 2.93 | Prospect Mountain High School Joint Maintenance Agreement District / 9,843 |
| 69. | 2.93 | Allenstown School District / 4,322 |
| 73. | 2.92 | Rollinsford School District / 2,527 |
| 73. | 2.92 | Warren School District / 904 |
| 73. | 2.92 | Winnisquam Regional School District / 11,362 |
| 73. | 2.92 | Exeter School District / 14,306 |
| 73. | 2.92 | Hopkinton School District / 5,589 |
| 78. | 2.91 | Monadnock Regional School District / 14,645 |
| 78. | 2.91 | Henniker School District / 4,836 |
| 78. | 2.91 | Rumney School District / 1,480 |
| 81. | 2.90 | Seabrook School District / 8,693 |
| 81. | 2.90 | Gilmanton School District / 3,777 |
| 83. | 2.89 | Newport School District / 6,507 |
| 83. | 2.89 | Dover School District / 29,987 |
| 83. | 2.89 | Lyndeborough School District / 1,683 |
| 83. | 2.89 | Contoocook Valley School District / 18,677 |
| 83. | 2.89 | Concord School District / 37,824 |
| 83. | 2.89 | Bath School District / 1,077 |
| 83. | 2.89 | Andover School District / 2,371 |
| 83. | 2.89 | Plymouth School District / 6,990 |
| 83. | 2.89 | Rochester School District / 29,752 |
| 92. | 2.88 | Plainfield School District / 2,364 |
| 93. | 2.87 | Hinsdale School District / 4,046 |
| 93. | 2.87 | Shaker Regional School District / 9,708 |
| 93. | 2.87 | Newington School District / 753 |
| 93. | 2.87 | Alton School District / 5,250 |
| 97. | 2.86 | Benton School District / 364 |
| 97. | 2.86 | North Hampton School District / 4,301 |
| 97. | 2.86 | Newmarket School District / 8,936 |
| 97. | 2.86 | Lyme School District / 1,716 |
| 101. | 2.85 | Chatham School District / 337 |
| 102. | 2.84 | Fall Mountain Regional School District / 12,364 |
| 102. | 2.84 | Winnacunnet Cooperative School District / 30,660 |
| 104. | 2.83 | Laconia School District / 15,951 |
| 104. | 2.83 | Rivendell Interstate School District / 1,237 |
| 104. | 2.83 | Claremont School District / 13,355 |
| 104. | 2.83 | Ellsworth School District / 83 |
| 104. | 2.83 | Keene School District / 23,409 |
| 104. | 2.83 | Piermont School District / 790 |
| 110. | 2.82 | Wentworth School District / 911 |
| 110. | 2.82 | Chesterfield School District / 3,604 |
| 110. | 2.82 | Gilford School District / 7,126 |
| 113. | 2.81 | Lisbon Regional School District / 2,128 |
| 113. | 2.81 | Campton School District / 3,333 |
| 113. | 2.81 | Pemi-Baker Regional School District / 19,388 |
| 113. | 2.81 | Westmoreland School District / 1,874 |
| 113. | 2.81 | Wakefield School District / 5,078 |
| 118. | 2.80 | Rye School District / 5,298 |
| 118. | 2.80 | Stratford School District / 746 |
| 118. | 2.80 | Kearsarge Regional School District / 15,458 |
| 118. | 2.80 | Haverhill Cooperative School District / 4,697 |
| 122. | 2.79 | Stoddard School District / 1,232 |
| 122. | 2.79 | Newfound Area School District / 10,274 |
| 122. | 2.79 | Marlborough School District / 2,063 |
| 122. | 2.79 | Nelson School District / 729 |
| 126. | 2.78 | White Mountain Regional School District / 8,662 |
| 126. | 2.78 | Madison School District / 2,502 |
| 126. | 2.78 | Conway School District / 10,115 |
| 126. | 2.78 | Goshen-Lempster Cooperative School District / 1,964 |
| 126. | 2.78 | Northumberland School District / 2,288 |
| 131. | 2.77 | Cornish School District / 1,640 |
| 131. | 2.77 | Monroe School District / 788 |
| 131. | 2.77 | Hampton School District / 15,430 |
| 131. | 2.77 | Mascoma Valley Regional School District / 10,517 |
| 131. | 2.77 | Bethlehem School District / 2,526 |
| 131. | 2.77 | Ashland School District / 2,076 |
| 131. | 2.77 | Littleton School District / 5,928 |
| 138. | 2.76 | Washington School District / 1,123 |
| 138. | 2.76 | Tamworth School District / 2,856 |
| 138. | 2.76 | Lebanon School District / 13,151 |
| 138. | 2.76 | Lincoln-Woodstock School District / 3,036 |
| 138. | 2.76 | Stark School District / 556 |
| 143. | 2.75 | Windsor School District / 224 |
| 143. | 2.75 | Portsmouth School District / 20,779 |
| 143. | 2.75 | Governor Wentworth Regional School District / 17,816 |
| 143. | 2.75 | Dummer School District / 304 |
| 143. | 2.75 | Unity School District / 1,671 |
| 148. | 2.74 | Grantham School District / 2,985 |
| 148. | 2.74 | Sunapee School District / 3,365 |
| 148. | 2.74 | Marlow School District / 742 |
| 148. | 2.74 | Holderness School District / 2,108 |
| 152. | 2.73 | Thornton School District / 2,490 |
| 152. | 2.73 | Colebrook School District / 2,301 |
| 154. | 2.72 | Croydon School District / 764 |
| 155. | 2.71 | Moultonborough School District / 4,044 |
| 155. | 2.71 | Surry School District / 732 |
| 155. | 2.71 | Berlin School District / 10,051 |
| 158. | 2.70 | Profile School District / 4,447 |
| 158. | 2.70 | Milan School District / 1,337 |
| 160. | 2.69 | Albany School District / 735 |
| 160. | 2.69 | Stewartstown School District / 1,004 |
| 162. | 2.68 | Gorham Randolph Shelburne Cooperative School District / 3,530 |
| 163. | 2.67 | Inter-Lakes School District / 8,663 |
| 164. | 2.66 | Bartlett School District / 2,788 |
| 165. | 2.65 | Columbia School District / 757 |
| 165. | 2.65 | Landaff School District / 415 |
| 167. | 2.61 | New Castle School District / 968 |
| 167. | 2.61 | Harrisville School District / 961 |
| 167. | 2.61 | Waterville Valley School District / 247 |
| 167. | 2.61 | Lafayette Regional School District / 1,921 |
| 171. | 2.57 | Freedom School District / 1,489 |
| 172. | 2.54 | Eaton School District / 393 |
| 173. | 2.53 | Pittsburg School District / 869 |
| 174. | 2.50 | Hart's Location School District / 41 |
| 175. | 2.49 | Clarksville School District / 265 |
| 175. | 2.49 | Jackson School District / 816 |
| 177. | 2.38 | Errol School District / 291 |
| 178. | 2.30 | Coos County School District / 210 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' data are not listed.
