| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.05 | Wilcox County School District / 11,706 |
| 2. | 3.85 | Fort Rucker School District / 5,254 |
| 3. | 3.80 | Greene County School District / 9,067 |
| 4. | 3.74 | Selma City School District / 20,559 |
| 5. | 3.57 | Bibb County School District / 22,769 |
| 6. | 3.55 | Thomasville City School District / 5,637 |
| 7. | 3.53 | Bullock County School District / 10,779 |
| 8. | 3.52 | Tuscaloosa City School District / 90,051 |
| 9. | 3.51 | Dallas County School District / 23,013 |
| 10. | 3.50 | Maxwell AFB School District / 2,052 |
| 11. | 3.49 | Perry County School District / 10,525 |
| 12. | 3.48 | Albertville City School District / 21,079 |
| 13. | 3.48 | Clarke County School District / 20,131 |
| 14. | 3.47 | Fairfield City School District / 11,135 |
| 15. | 3.47 | Oneonta City School District / 6,578 |
| 16. | 3.46 | Sumter County School District / 13,669 |
| 17. | 3.46 | Conecuh County School District / 13,188 |
| 18. | 3.46 | Lanett City School District / 6,515 |
| 19. | 3.45 | Lowndes County School District / 11,304 |
| 20. | 3.45 | Tuscaloosa County School District / 104,203 |
| 21. | 3.43 | Barbour County School District / 14,383 |
| 22. | 3.40 | Midfield City School District / 5,366 |
| 23. | 3.40 | Hale County School District / 15,750 |
| 24. | 3.39 | Boaz City School District / 9,520 |
| 25. | 3.37 | Phenix City City School District / 33,555 |
| 26. | 3.34 | Choctaw County School District / 13,838 |
| 27. | 3.34 | DeKalb County School District / 56,881 |
| 28. | 3.33 | Russell County School District / 24,584 |
| 29. | 3.33 | Autauga County School District / 54,590 |
| 30. | 3.32 | Monroe County School District / 22,993 |
| 31. | 3.32 | Enterprise City School District / 26,635 |
| 32. | 3.31 | Fort Payne City School District / 14,068 |
| 33. | 3.31 | Attalla City School District / 6,060 |
| 34. | 3.30 | Tarrant City School District / 6,412 |
| 35. | 3.30 | Haleyville City School District / 8,523 |
| 36. | 3.28 | Bessemer City School District / 27,516 |
| 37. | 3.28 | Cleburne County School District / 14,832 |
| 38. | 3.28 | Butler County School District / 20,730 |
| 39. | 3.27 | Oxford City School District / 22,936 |
| 40. | 3.27 | Madison City School District / 42,925 |
| 41. | 3.27 | Tallassee City School District / 9,137 |
| 42. | 3.26 | Guntersville City School District / 8,241 |
| 43. | 3.25 | Homewood City School District / 25,123 |
| 44. | 3.25 | Randolph County School District / 16,768 |
| 45. | 3.24 | Mobile County School District / 399,066 |
| 46. | 3.24 | Houston County School District / 36,728 |
| 47. | 3.24 | Birmingham City School District / 213,180 |
| 48. | 3.23 | Dothan City School District / 66,355 |
| 49. | 3.23 | Marshall County School District / 47,316 |
| 50. | 3.23 | Blount County School District / 50,888 |
| 51. | 3.22 | Madison County School District / 123,255 |
| 52. | 3.22 | Roanoke City School District / 6,075 |
| 53. | 3.21 | Montgomery County School District / 227,324 |
| 54. | 3.21 | Trussville City School District / 19,178 |
| 55. | 3.21 | Chilton County School District / 43,611 |
| 56. | 3.21 | Eufaula City School District / 13,086 |
| 57. | 3.20 | Mountain Brook City School District / 20,398 |
| 58. | 3.19 | Hoover City School District / 81,254 |
| 59. | 3.19 | Escambia County School District / 32,745 |
| 60. | 3.19 | Lee County School District / 56,182 |
| 61. | 3.18 | Calhoun County School District / 57,522 |
| 62. | 3.18 | Shelby County School District / 170,402 |
| 63. | 3.18 | Jacksonville City School District / 12,304 |
| 64. | 3.16 | Covington County School District / 22,095 |
| 65. | 3.15 | Vestavia Hills City School District / 33,831 |
| 66. | 3.15 | Decatur City School District / 55,664 |
| 67. | 3.15 | Athens City School District / 22,198 |
| 68. | 3.15 | Gadsden City School District / 36,888 |
| 69. | 3.15 | Morgan County School District / 50,112 |
| 70. | 3.15 | Hartselle City School District / 13,622 |
| 71. | 3.15 | Chambers County School District / 27,713 |
| 72. | 3.15 | St. Clair County School District / 54,272 |
| 73. | 3.15 | Opp City School District / 6,680 |
| 74. | 3.14 | Jefferson County School District / 230,130 |
| 75. | 3.14 | Anniston City School District / 23,067 |
| 76. | 3.13 | Elmore County School District / 71,881 |
| 77. | 3.13 | Arab City School District / 8,119 |
| 78. | 3.13 | Huntsville City School District / 171,881 |
| 79. | 3.12 | Russellville City School District / 9,791 |
| 80. | 3.12 | Etowah County School District / 60,225 |
| 81. | 3.12 | Jackson County School District / 38,487 |
| 82. | 3.12 | Talladega City School District / 15,753 |
| 83. | 3.11 | Dale County School District / 14,744 |
| 84. | 3.11 | Jasper City School District / 14,332 |
| 85. | 3.11 | Coffee County School District / 18,672 |
| 86. | 3.11 | Daleville City School District / 11,140 |
| 87. | 3.11 | Macon County School District / 21,214 |
| 88. | 3.11 | Leeds City School District / 12,160 |
| 89. | 3.10 | Crenshaw County School District / 13,971 |
| 90. | 3.10 | Walker County School District / 52,684 |
| 91. | 3.10 | Colbert County School District / 23,928 |
| 92. | 3.10 | Tallapoosa County School District / 22,276 |
| 93. | 3.10 | Marengo County School District / 8,804 |
| 94. | 3.10 | Washington County School District / 17,407 |
| 95. | 3.09 | Elba City School District / 5,079 |
| 96. | 3.09 | Pike County School District / 14,886 |
| 97. | 3.09 | Saraland City School District / 13,231 |
| 98. | 3.08 | Auburn City School District / 53,817 |
| 99. | 3.07 | Cullman County School District / 65,690 |
| 100. | 3.07 | Franklin County School District / 21,873 |
| 101. | 3.06 | Winston County School District / 16,292 |
| 102. | 3.06 | Cullman City School District / 14,652 |
| 103. | 3.06 | Brewton City School District / 5,377 |
| 104. | 3.05 | Pickens County School District / 19,646 |
| 105. | 3.05 | Pell City City School District / 26,874 |
| 106. | 3.05 | Coosa County School District / 11,305 |
| 107. | 3.05 | Talladega County School District / 49,549 |
| 108. | 3.03 | Opelika City School District / 26,738 |
| 109. | 3.03 | Geneva City School District / 6,619 |
| 110. | 3.03 | Henry County School District / 17,275 |
| 111. | 3.03 | Lawrence County School District / 34,148 |
| 112. | 3.03 | Limestone County School District / 57,647 |
| 113. | 3.02 | Lauderdale County School District / 53,240 |
| 114. | 3.02 | Demopolis City School District / 7,439 |
| 115. | 3.02 | Winfield City School District / 7,003 |
| 116. | 3.01 | Ozark City School District / 16,947 |
| 117. | 3.01 | Sylacauga City School District / 12,778 |
| 118. | 3.01 | Andalusia City School District / 9,028 |
| 119. | 3.00 | Muscle Shoals City School District / 13,062 |
| 120. | 2.99 | Baldwin County School District / 183,226 |
| 121. | 2.98 | Alexander City City School District / 17,570 |
| 122. | 2.97 | Piedmont City School District / 6,192 |
| 123. | 2.96 | Geneva County School District / 20,150 |
| 124. | 2.95 | Scottsboro City School District / 14,792 |
| 125. | 2.95 | Sheffield City School District / 9,060 |
| 126. | 2.94 | Fayette County School District / 15,515 |
| 127. | 2.94 | Clay County School District / 13,828 |
| 128. | 2.94 | Linden City School District / 4,666 |
| 129. | 2.93 | Tuscumbia City School District / 8,401 |
| 130. | 2.92 | Florence City School District / 39,288 |
| 131. | 2.91 | Troy City School District / 17,864 |
| 132. | 2.79 | Lamar County School District / 14,513 |
| 133. | 2.78 | Marion County School District / 24,959 |
| 134. | 2.57 | Cherokee County School District / 25,917 |
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.
