| Rank | Average Family Size ▼ | School District / Population |
| 1. | 7.88 | Colorado City Unified District / 6,133 |
| 2. | 4.60 | San Carlos Unified District / 5,301 |
| 3. | 4.56 | Fort Thomas Unified District / 5,234 |
| 4. | 4.37 | Whiteriver Unified District / 11,176 |
| 5. | 4.32 | McNary Elementary District / 549 |
| 5. | 4.32 | Isaac Elementary District / 43,107 |
| 7. | 4.31 | Gadsden Elementary District / 25,269 |
| 8. | 4.27 | Murphy Elementary District / 17,265 |
| 8. | 4.27 | Tuba City Unified District / 16,064 |
| 8. | 4.27 | Pinon Unified District / 7,087 |
| 11. | 4.26 | Cartwright Elementary District / 112,047 |
| 12. | 4.25 | Sacaton Elementary District / 6,582 |
| 13. | 4.12 | Chinle Unified District / 20,202 |
| 14. | 4.08 | Red Mesa Unified District / 8,605 |
| 14. | 4.08 | Indian Oasis-Baboquivari Unified District / 7,174 |
| 16. | 4.07 | Kayenta Unified District / 10,479 |
| 17. | 4.06 | Wilson Elementary District / 3,852 |
| 18. | 4.04 | Ganado Unified District / 7,181 |
| 19. | 4.03 | Union Elementary District / 14,004 |
| 20. | 4.02 | Cedar Unified District / 7,264 |
| 21. | 3.99 | Riverside Elementary District / 6,752 |
| 22. | 3.97 | Somerton Elementary District / 21,579 |
| 23. | 3.96 | Peach Springs Unified District / 1,306 |
| 24. | 3.95 | Alhambra Elementary District / 84,491 |
| 25. | 3.93 | Paloma School District / 301 |
| 26. | 3.91 | Window Rock Unified District / 11,846 |
| 27. | 3.90 | Sanders Unified District / 5,899 |
| 27. | 3.90 | Fowler Elementary District / 29,756 |
| 29. | 3.88 | Naco Elementary District / 1,502 |
| 30. | 3.84 | Roosevelt Elementary District / 101,878 |
| 31. | 3.79 | Tolleson Elementary District / 15,052 |
| 32. | 3.78 | Tolleson Union High School District / 164,860 |
| 32. | 3.78 | Littleton Elementary District / 39,076 |
| 34. | 3.77 | Page Unified District / 13,046 |
| 35. | 3.76 | Phoenix Union High School District / 652,590 |
| 36. | 3.74 | Santa Cruz Elementary District / 1,753 |
| 37. | 3.73 | Eloy Elementary District / 6,642 |
| 37. | 3.73 | Sunnyside Unified District / 87,770 |
| 39. | 3.71 | Laveen Elementary District / 40,902 |
| 40. | 3.70 | Holbrook Unified District / 10,539 |
| 41. | 3.67 | Pendergast Elementary District / 66,972 |
| 41. | 3.67 | Stanfield Elementary District / 5,193 |
| 43. | 3.66 | Joseph City Unified District / 1,794 |
| 44. | 3.65 | Glendale Elementary District / 97,573 |
| 45. | 3.64 | Palo Verde Elementary District / 2,739 |
| 45. | 3.64 | Nogales Unified District / 22,183 |
| 45. | 3.64 | Gila Bend Unified District / 2,434 |
| 48. | 3.62 | Queen Creek Unified District / 26,329 |
| 49. | 3.61 | Creighton Elementary District / 66,112 |
| 50. | 3.60 | Arlington Elementary District / 1,472 |
| 50. | 3.60 | J. O. Combs Unified School District / 34,868 |
| 52. | 3.59 | Buckeye Elementary District / 37,662 |
| 53. | 3.58 | Avondale Elementary District / 44,659 |
| 54. | 3.57 | Douglas Unified District / 21,931 |
| 55. | 3.56 | Crane Elementary District / 43,266 |
| 56. | 3.55 | Buckeye Union High School District / 65,817 |
| 56. | 3.55 | Santa Cruz Valley Union High School District / 18,271 |
| 56. | 3.55 | Hyder Elementary District / 735 |
| 59. | 3.54 | Phoenix Elementary District / 55,104 |
| 59. | 3.54 | Fort Huachuca Accommodation District / 5,610 |
| 61. | 3.53 | Santa Cruz Valley Unified District / 20,089 |
| 62. | 3.49 | Coolidge Unified District / 34,472 |
| 63. | 3.48 | Saddle Mountain Unified School District / 8,821 |
| 64. | 3.47 | Liberty Elementary District / 23,944 |
| 65. | 3.46 | Pima Unified District / 3,747 |
| 66. | 3.45 | Picacho Elementary District / 8,265 |
| 67. | 3.44 | Snowflake Unified District / 12,244 |
| 67. | 3.44 | Higley Unified District / 64,704 |
| 69. | 3.41 | Thatcher Unified District / 7,416 |
| 70. | 3.40 | Maricopa Unified School District / 47,289 |
| 70. | 3.40 | Yuma Union High School District / 189,381 |
| 72. | 3.39 | Morenci Unified District / 2,878 |
| 72. | 3.39 | Florence Unified School District / 70,940 |
| 74. | 3.37 | Sentinel Elementary District / 128 |
| 74. | 3.37 | Winslow Unified District / 11,556 |
| 76. | 3.36 | Agua Fria Union High School District / 120,678 |
| 76. | 3.36 | Glendale Union High School District / 323,335 |
| 76. | 3.36 | Nadaburg Unified School District / 8,136 |
| 79. | 3.35 | Aguila Elementary District / 1,179 |
| 80. | 3.33 | Balsz Elementary District / 29,036 |
| 80. | 3.33 | Gilbert Unified District / 184,433 |
| 82. | 3.32 | Safford Unified District / 16,677 |
| 83. | 3.30 | Sahuarita Unified District / 27,042 |
| 84. | 3.28 | Casa Grande Union High School District / 86,739 |
| 84. | 3.28 | Altar Valley Elementary District / 7,275 |
| 86. | 3.27 | Red Rock Elementary District / 3,364 |
| 87. | 3.25 | Solomon Elementary District / 2,883 |
| 88. | 3.24 | Hayden-Winkelman Unified District / 1,340 |
| 88. | 3.24 | Washington Elementary District / 225,762 |
| 88. | 3.24 | Litchfield Elementary District / 76,019 |
| 91. | 3.23 | St. Johns Unified District / 4,198 |
| 92. | 3.22 | Chandler Unified District / 220,791 |
| 92. | 3.22 | Casa Grande Elementary District / 60,768 |
| 94. | 3.21 | Bagdad Unified School District / 2,143 |
| 95. | 3.20 | Clifton Unified District / 2,832 |
| 95. | 3.20 | Fredonia-Moccasin Unified District / 2,825 |
| 97. | 3.19 | Round Valley Unified District / 8,168 |
| 98. | 3.18 | Mammoth-San Manuel Unified District / 5,460 |
| 99. | 3.17 | McNeal Elementary District / 507 |
| 99. | 3.17 | Osborn Elementary District / 36,828 |
| 99. | 3.17 | Dysart Unified District / 163,541 |
| 102. | 3.16 | Mesa Unified District / 453,632 |
| 102. | 3.16 | Deer Valley Unified District / 239,044 |
| 104. | 3.15 | Willcox Unified District / 8,533 |
| 104. | 3.15 | Mohawk Valley Elementary District / 1,597 |
| 104. | 3.15 | Vail Unified District / 52,532 |
| 107. | 3.12 | Parker Unified School District / 9,568 |
| 107. | 3.12 | Wenden Elementary District / 815 |
| 107. | 3.12 | Tempe School District / 143,748 |
| 107. | 3.12 | Valentine Elementary District / 249 |
| 107. | 3.12 | Peoria Unified School District / 203,652 |
| 107. | 3.12 | Mobile Elementary District / 124 |
| 113. | 3.11 | Flowing Wells Unified District / 30,010 |
| 113. | 3.11 | Ray Unified District / 3,826 |
| 115. | 3.09 | Elfrida Elementary District / 1,121 |
| 116. | 3.08 | Duncan Unified District / 2,653 |
| 116. | 3.08 | Redington Elementary District / 96 |
| 116. | 3.08 | Superior Unified School District / 3,364 |
| 116. | 3.08 | Flagstaff Unified District / 91,658 |
| 120. | 3.07 | Tucson Unified District / 472,675 |
| 121. | 3.06 | Toltec Elementary District / 14,196 |
| 121. | 3.06 | Tempe Union High School District / 294,099 |
| 123. | 3.05 | Yuma Elementary District / 99,267 |
| 124. | 3.04 | Marana Unified District / 86,614 |
| 125. | 3.03 | Pomerene Elementary District / 1,010 |
| 125. | 3.03 | Kyrene Elementary District / 150,351 |
| 127. | 3.00 | Hillside Elementary District / 129 |
| 128. | 2.99 | Globe Unified District / 10,636 |
| 128. | 2.99 | Paradise Valley Unified District / 239,872 |
| 130. | 2.98 | Williams Unified District / 5,744 |
| 131. | 2.97 | Bowie Unified District / 608 |
| 131. | 2.97 | Littlefield Unified District / 3,930 |
| 133. | 2.96 | Miami Unified District / 7,534 |
| 133. | 2.96 | Blue Ridge Unified District / 14,227 |
| 133. | 2.96 | Camp Verde Unified District / 11,452 |
| 133. | 2.96 | Show Low Unified District / 16,295 |
| 137. | 2.95 | Beaver Creek Elementary District / 4,808 |
| 137. | 2.95 | Antelope Union High School District / 6,370 |
| 139. | 2.94 | Humboldt Unified District / 51,093 |
| 139. | 2.94 | Chino Valley Unified District / 21,594 |
| 141. | 2.93 | Palominas Elementary District / 10,521 |
| 142. | 2.91 | Skull Valley Elementary District / 611 |
| 143. | 2.90 | Sierra Vista Unified District / 48,962 |
| 144. | 2.89 | Tombstone Unified District / 7,641 |
| 145. | 2.88 | Cottonwood-Oak Creek Elementary District / 29,429 |
| 146. | 2.87 | Vernon Elementary District / 1,932 |
| 146. | 2.87 | Mingus Union High School District / 33,217 |
| 148. | 2.86 | Madison Elementary District / 55,216 |
| 149. | 2.85 | Tanque Verde Unified District / 11,481 |
| 149. | 2.85 | Grand Canyon Unified District / 2,628 |
| 149. | 2.85 | Amphitheater Unified District / 136,207 |
| 149. | 2.85 | Double Adobe Elementary District / 482 |
| 153. | 2.84 | Bisbee Unified District / 7,072 |
| 153. | 2.84 | Kingman Unified School District / 65,381 |
| 155. | 2.83 | Mohave Valley Elementary District / 21,720 |
| 155. | 2.83 | Morristown Elementary District / 1,805 |
| 155. | 2.83 | Scottsdale Unified District / 220,304 |
| 158. | 2.82 | Benson Unified School District / 8,210 |
| 158. | 2.82 | Bullhead City School District / 40,144 |
| 158. | 2.82 | St. David Unified District / 3,680 |
| 161. | 2.81 | Colorado River Union High School District / 64,364 |
| 161. | 2.81 | Bonita Elementary District / 1,197 |
| 161. | 2.81 | Ash Fork Joint Unified District / 1,834 |
| 164. | 2.80 | Wellton Elementary District / 4,038 |
| 165. | 2.79 | Clarkdale-Jerome Elementary District / 3,788 |
| 165. | 2.79 | Ajo Unified District / 3,304 |
| 167. | 2.78 | Kirkland Elementary District / 1,131 |
| 168. | 2.77 | Mayer Unified District / 5,679 |
| 169. | 2.75 | Cochise Elementary District / 262 |
| 169. | 2.75 | Empire Elementary District / 448 |
| 169. | 2.75 | Patagonia Elementary District / 1,533 |
| 172. | 2.71 | Cave Creek Unified District / 56,235 |
| 172. | 2.71 | Catalina Foothills Unified District / 31,188 |
| 174. | 2.70 | Heber-Overgaard Unified District / 4,094 |
| 175. | 2.69 | Apache Junction Unified District / 56,919 |
| 175. | 2.69 | Payson Unified District / 21,636 |
| 177. | 2.67 | Canon Elementary District / 2,918 |
| 177. | 2.67 | Concho Elementary District / 2,475 |
| 177. | 2.67 | Valley Union High School District / 3,894 |
| 177. | 2.67 | Lake Havasu Unified District / 55,531 |
| 177. | 2.67 | Ash Creek Elementary District / 704 |
| 177. | 2.67 | Maine Consolidated School District / 1,279 |
| 177. | 2.67 | Apache Elementary District / 166 |
| 184. | 2.66 | Patagonia Union High School District / 3,382 |
| 185. | 2.65 | San Simon Unified District / 687 |
| 186. | 2.63 | Wickenburg Unified District / 11,199 |
| 187. | 2.62 | Hackberry School District / 1,208 |
| 188. | 2.61 | Owens-Whitney Elementary District / 610 |
| 188. | 2.61 | Seligman Unified District / 1,316 |
| 190. | 2.60 | Sonoita Elementary District / 1,849 |
| 191. | 2.58 | Prescott Unified District / 54,534 |
| 192. | 2.56 | Fountain Hills Unified District / 23,016 |
| 193. | 2.55 | Young Elementary School District / 885 |
| 194. | 2.53 | Klondyke Elementary District / 66 |
| 195. | 2.50 | Rucker Elementary District / 27 |
| 196. | 2.48 | Topock Elementary District / 2,500 |
| 197. | 2.47 | Sedona-Oak Creek Joint Unified District / 14,440 |
| 197. | 2.47 | Pearce Elementary District / 2,069 |
| 199. | 2.46 | Williamson Valley Elementary School District / 607 |
| 200. | 2.45 | Yucca Elementary District / 686 |
| 200. | 2.45 | Congress Elementary District / 2,439 |
| 202. | 2.44 | Bicentennial Union High School District / 10,921 |
| 202. | 2.44 | Crown King Elementary District / 174 |
| 204. | 2.42 | Quartzsite Elementary District / 6,162 |
| 204. | 2.42 | Alpine Elementary District / 463 |
| 206. | 2.37 | Pine Strawberry Elementary District / 2,952 |
| 206. | 2.37 | Walnut Grove Elementary District / 102 |
| 208. | 2.35 | Salome Consolidated Elementary District / 2,763 |
| 209. | 2.33 | Oracle Elementary District / 13,622 |
| 210. | 2.31 | San Fernando Elementary District / 52 |
| 210. | 2.31 | Tonto Basin Elementary District / 1,634 |
| 210. | 2.31 | Bouse Elementary District / 1,181 |
| 213. | 2.30 | Yarnell Elementary District / 1,182 |
| 214. | 2.25 | Blue Elementary District / 37 |
| 215. | 2.23 | Chevelon Butte School District / 650 |
| 216. | 2.20 | Eagle Elementary District / 37 |
| 217. | 2.15 | Continental Elementary District / 26,016 |
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.
