| Rank | Average Family Size ▼ | School District / Population |
| 1. | 7.94 | Colorado City Unified District / 5,626 |
| 2. | 7.26 | San Carlos Unified District / 6,485 |
| 3. | 6.14 | McNary Elementary District / 477 |
| 4. | 5.75 | Window Rock Unified District / 12,042 |
| 5. | 5.37 | Ganado Unified District / 8,653 |
| 6. | 5.28 | Sanders Unified District / 6,028 |
| 7. | 5.03 | Fort Thomas Unified District / 5,159 |
| 8. | 4.95 | Chinle Unified District / 18,033 |
| 9. | 4.81 | Nogales Unified District / 22,620 |
| 10. | 4.80 | Red Mesa Unified District / 7,767 |
| 11. | 4.64 | Whiteriver Unified District / 11,187 |
| 12. | 4.60 | Santa Cruz Valley Unified District / 19,992 |
| 13. | 4.57 | Santa Cruz Elementary District / 1,176 |
| 14. | 4.55 | Tuba City Unified District / 15,227 |
| 15. | 4.55 | Cedar Unified District / 9,287 |
| 16. | 4.51 | Isaac Elementary District / 43,403 |
| 17. | 4.49 | Cartwright Elementary District / 113,306 |
| 18. | 4.39 | Murphy Elementary District / 16,094 |
| 19. | 4.38 | Tolleson Elementary District / 15,052 |
| 20. | 4.30 | Indian Oasis-Baboquivari Unified District / 5,896 |
| 21. | 4.28 | Naco Elementary District / 1,635 |
| 22. | 4.25 | Wilson Elementary District / 3,810 |
| 23. | 4.21 | Mobile Elementary District / 68 |
| 24. | 4.20 | Kayenta Unified District / 9,492 |
| 25. | 4.19 | Alhambra Elementary District / 86,740 |
| 26. | 4.19 | Union Elementary District / 14,568 |
| 27. | 4.18 | Riverside Elementary District / 6,729 |
| 28. | 4.16 | Peach Springs Unified District / 651 |
| 29. | 4.06 | Roosevelt Elementary District / 96,847 |
| 30. | 4.06 | Pinon Unified District / 5,425 |
| 31. | 4.03 | Hayden-Winkelman Unified District / 1,620 |
| 32. | 4.02 | Fowler Elementary District / 27,583 |
| 33. | 4.01 | Sacaton Elementary District / 7,346 |
| 34. | 4.01 | Arlington Elementary District / 1,346 |
| 35. | 3.99 | Tolleson Union High School District / 160,531 |
| 36. | 3.96 | Sunnyside Unified District / 84,832 |
| 37. | 3.96 | Phoenix Union High School District / 646,527 |
| 38. | 3.94 | Littleton Elementary District / 33,522 |
| 39. | 3.92 | Queen Creek Unified District / 22,117 |
| 40. | 3.91 | Snowflake Unified District / 11,920 |
| 41. | 3.89 | Klondyke Elementary District / 69 |
| 42. | 3.88 | Pendergast Elementary District / 69,806 |
| 43. | 3.87 | St. Johns Unified District / 3,846 |
| 44. | 3.86 | Avondale Elementary District / 42,117 |
| 45. | 3.82 | Page Unified District / 12,933 |
| 46. | 3.80 | Creighton Elementary District / 65,314 |
| 47. | 3.80 | Joseph City Unified District / 1,845 |
| 48. | 3.80 | Laveen Elementary District / 37,384 |
| 49. | 3.78 | Pima Unified District / 3,577 |
| 50. | 3.77 | Aguila Elementary District / 885 |
| 51. | 3.77 | Eloy Elementary District / 8,687 |
| 52. | 3.75 | Buckeye Elementary District / 35,305 |
| 53. | 3.75 | Glendale Elementary District / 99,112 |
| 54. | 3.72 | Phoenix Elementary District / 53,279 |
| 55. | 3.70 | Gadsden Elementary District / 21,820 |
| 56. | 3.69 | Santa Cruz Valley Union High School District / 15,845 |
| 57. | 3.67 | Gila Bend Unified District / 2,005 |
| 58. | 3.66 | Buckeye Union High School District / 60,839 |
| 59. | 3.63 | Elfrida Elementary District / 1,345 |
| 60. | 3.63 | Paloma School District / 213 |
| 61. | 3.62 | Saddle Mountain Unified School District / 6,226 |
| 62. | 3.62 | Winslow Unified District / 11,869 |
| 63. | 3.61 | Holbrook Unified District / 10,015 |
| 64. | 3.59 | Douglas Unified District / 21,034 |
| 65. | 3.58 | Somerton Elementary District / 19,194 |
| 66. | 3.56 | Miami Unified District / 8,456 |
| 67. | 3.53 | Stanfield Elementary District / 4,350 |
| 68. | 3.53 | Higley Unified District / 56,902 |
| 69. | 3.52 | Liberty Elementary District / 22,097 |
| 70. | 3.52 | Concho Elementary District / 2,169 |
| 71. | 3.50 | Agua Fria Union High School District / 109,987 |
| 72. | 3.50 | Palo Verde Elementary District / 2,091 |
| 73. | 3.50 | Altar Valley Elementary District / 5,999 |
| 74. | 3.48 | Glendale Union High School District / 334,441 |
| 75. | 3.48 | J. O. Combs Unified School District / 24,628 |
| 76. | 3.48 | Name N/A / 2,100,636 |
| 77. | 3.47 | Red Rock Elementary District / 1,616 |
| 78. | 3.47 | Gilbert Unified District / 184,009 |
| 79. | 3.47 | St. David Unified District / 4,199 |
| 80. | 3.45 | Osborn Elementary District / 40,522 |
| 81. | 3.43 | Fort Huachuca Accommodation District / 5,520 |
| 82. | 3.43 | Littlefield Unified District / 2,292 |
| 83. | 3.42 | Bagdad Unified School District / 2,204 |
| 84. | 3.40 | San Simon Unified District / 760 |
| 85. | 3.40 | Nadaburg Unified School District / 6,826 |
| 86. | 3.39 | Round Valley Unified District / 9,599 |
| 87. | 3.38 | Coolidge Unified District / 31,828 |
| 88. | 3.38 | Balsz Elementary District / 27,027 |
| 89. | 3.38 | Safford Unified District / 15,772 |
| 90. | 3.38 | Washington Elementary District / 235,329 |
| 91. | 3.36 | Sahuarita Unified District / 24,247 |
| 92. | 3.36 | Picacho Elementary District / 5,542 |
| 93. | 3.36 | Sentinel Elementary District / 88 |
| 94. | 3.33 | Tempe School District / 145,015 |
| 95. | 3.31 | Litchfield Elementary District / 67,870 |
| 96. | 3.31 | Pomerene Elementary District / 961 |
| 97. | 3.30 | Deer Valley Unified District / 226,328 |
| 98. | 3.29 | Mesa Unified District / 455,981 |
| 99. | 3.28 | Peoria Unified School District / 200,819 |
| 100. | 3.28 | Chandler Unified District / 209,740 |
| 101. | 3.28 | Wenden Elementary District / 711 |
| 102. | 3.27 | Hillside Elementary District / 39 |
| 103. | 3.27 | Thatcher Unified District / 6,896 |
| 104. | 3.26 | Dysart Unified District / 145,205 |
| 105. | 3.26 | Camp Verde Unified District / 11,405 |
| 106. | 3.25 | Globe Unified District / 10,892 |
| 107. | 3.24 | Florence Unified School District / 61,510 |
| 108. | 3.23 | Tucson Unified District / 478,354 |
| 109. | 3.23 | Tempe Union High School District / 301,204 |
| 110. | 3.23 | Crane Elementary District / 42,756 |
| 111. | 3.22 | Bowie Unified District / 508 |
| 112. | 3.22 | Fredonia-Moccasin Unified District / 2,300 |
| 113. | 3.21 | Solomon Elementary District / 3,148 |
| 114. | 3.20 | Palominas Elementary District / 10,293 |
| 115. | 3.20 | Flagstaff Unified District / 92,821 |
| 116. | 3.19 | Willcox Unified District / 7,524 |
| 117. | 3.19 | Vail Unified District / 46,202 |
| 118. | 3.18 | Clarkdale-Jerome Elementary District / 3,640 |
| 119. | 3.18 | Redington Elementary District / 44 |
| 120. | 3.18 | McNeal Elementary District / 322 |
| 121. | 3.17 | Marana Unified District / 82,156 |
| 122. | 3.17 | Flowing Wells Unified District / 28,288 |
| 123. | 3.16 | Maricopa Unified School District / 38,331 |
| 124. | 3.16 | Paradise Valley Unified District / 243,065 |
| 125. | 3.16 | Kyrene Elementary District / 156,189 |
| 126. | 3.16 | Humboldt Unified District / 50,150 |
| 127. | 3.15 | Casa Grande Union High School District / 75,661 |
| 128. | 3.14 | Morenci Unified District / 3,552 |
| 129. | 3.13 | Williams Unified District / 5,203 |
| 130. | 3.13 | Heber-Overgaard Unified District / 3,833 |
| 131. | 3.12 | Yucca Elementary District / 380 |
| 132. | 3.12 | Mohawk Valley Elementary District / 1,177 |
| 133. | 3.11 | Empire Elementary District / 287 |
| 134. | 3.11 | Ash Creek Elementary District / 1,010 |
| 135. | 3.10 | Mammoth-San Manuel Unified District / 5,822 |
| 136. | 3.10 | Casa Grande Elementary District / 56,034 |
| 137. | 3.10 | Yuma Union High School District / 185,507 |
| 138. | 3.09 | Vernon Elementary District / 1,216 |
| 139. | 3.07 | Hyder Elementary District / 483 |
| 140. | 3.06 | Chino Valley Unified District / 21,325 |
| 141. | 3.06 | Ash Fork Joint Unified District / 1,188 |
| 142. | 3.05 | Kingman Unified School District / 67,408 |
| 143. | 3.04 | Tombstone Unified District / 7,000 |
| 144. | 3.01 | Bisbee Unified District / 7,480 |
| 145. | 3.00 | Bullhead City School District / 40,326 |
| 146. | 2.99 | Mingus Union High School District / 33,568 |
| 147. | 2.99 | Mayer Unified District / 5,470 |
| 148. | 2.99 | Madison Elementary District / 56,072 |
| 149. | 2.98 | Ray Unified District / 4,266 |
| 150. | 2.98 | Duncan Unified District / 2,429 |
| 151. | 2.97 | Cottonwood-Oak Creek Elementary District / 29,928 |
| 152. | 2.97 | Sierra Vista Unified District / 48,373 |
| 153. | 2.97 | Bonita Elementary District / 1,409 |
| 154. | 2.96 | Beaver Creek Elementary District / 4,178 |
| 155. | 2.96 | Valley Union High School District / 4,726 |
| 156. | 2.96 | Colorado River Union High School District / 65,407 |
| 157. | 2.95 | Blue Ridge Unified District / 15,791 |
| 158. | 2.94 | Mohave Valley Elementary District / 22,586 |
| 159. | 2.94 | Show Low Unified District / 15,662 |
| 160. | 2.93 | Scottsdale Unified District / 224,296 |
| 161. | 2.93 | Amphitheater Unified District / 135,450 |
| 162. | 2.92 | Skull Valley Elementary District / 317 |
| 163. | 2.92 | Double Adobe Elementary District / 653 |
| 164. | 2.92 | Tanque Verde Unified District / 11,834 |
| 165. | 2.91 | Payson Unified District / 20,796 |
| 166. | 2.88 | Ajo Unified District / 3,206 |
| 167. | 2.87 | Clifton Unified District / 2,315 |
| 168. | 2.85 | Yuma Elementary District / 101,737 |
| 169. | 2.84 | Lake Havasu Unified District / 55,024 |
| 170. | 2.84 | Antelope Union High School District / 5,019 |
| 171. | 2.83 | Catalina Foothills Unified District / 32,492 |
| 172. | 2.82 | Valentine Elementary District / 204 |
| 173. | 2.82 | Kirkland Elementary District / 1,050 |
| 174. | 2.80 | Owens-Whitney Elementary District / 694 |
| 175. | 2.79 | Patagonia Elementary District / 1,056 |
| 176. | 2.78 | Toltec Elementary District / 7,931 |
| 177. | 2.77 | Benson Unified School District / 7,886 |
| 178. | 2.75 | Hackberry School District / 1,023 |
| 179. | 2.74 | Morristown Elementary District / 1,526 |
| 180. | 2.73 | Young Elementary School District / 424 |
| 181. | 2.72 | Wellton Elementary District / 3,359 |
| 182. | 2.70 | Maine Consolidated School District / 980 |
| 183. | 2.70 | Superior Unified School District / 3,050 |
| 184. | 2.69 | Cave Creek Unified District / 51,324 |
| 185. | 2.67 | Prescott Unified District / 56,597 |
| 186. | 2.67 | Parker Unified School District / 11,914 |
| 187. | 2.67 | Pine Strawberry Elementary District / 2,928 |
| 188. | 2.66 | Grand Canyon Unified District / 1,488 |
| 189. | 2.65 | Apache Junction Unified District / 55,907 |
| 190. | 2.64 | Fountain Hills Unified District / 22,808 |
| 191. | 2.61 | Pearce Elementary District / 2,371 |
| 192. | 2.60 | Patagonia Union High School District / 2,263 |
| 193. | 2.56 | Congress Elementary District / 2,074 |
| 194. | 2.54 | Topock Elementary District / 2,495 |
| 195. | 2.52 | Sedona-Oak Creek Joint Unified District / 14,848 |
| 196. | 2.52 | Tonto Basin Elementary District / 911 |
| 197. | 2.51 | Wickenburg Unified District / 9,856 |
| 198. | 2.48 | Yarnell Elementary District / 1,088 |
| 199. | 2.47 | Sonoita Elementary District / 1,207 |
| 200. | 2.47 | Cochise Elementary District / 294 |
| 201. | 2.46 | Canon Elementary District / 2,499 |
| 202. | 2.44 | Salome Consolidated Elementary District / 1,754 |
| 203. | 2.43 | Walnut Grove Elementary District / 49 |
| 204. | 2.40 | Williamson Valley Elementary School District / 510 |
| 205. | 2.32 | Name N/A / 70,450 |
| 206. | 2.31 | Seligman Unified District / 711 |
| 207. | 2.30 | Chevelon Butte School District / 377 |
| 208. | 2.24 | Bicentennial Union High School District / 8,635 |
| 209. | 2.24 | Alpine Elementary District / 482 |
| 210. | 2.20 | Eagle Elementary District / 11 |
| 211. | 2.20 | Oracle Elementary District / 12,449 |
| 212. | 2.12 | Bouse Elementary District / 1,077 |
| 213. | 2.10 | Quartzsite Elementary District / 5,093 |
| 214. | 2.10 | Continental Elementary District / 24,722 |
| 215. | 2.04 | San Fernando Elementary District / 49 |
| 216. | 2.00 | Rucker Elementary District / 12 |
| 217. | 1.92 | Apache Elementary District / 46 |
| 218. | 1.85 | Crown King Elementary District / 37 |
| 219. | 1.50 | Blue Elementary District / 11 |
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.
*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.
