| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.99 | Thomasville City School District / 6,482 |
| 2. | 3.88 | Wilcox County School District / 12,012 |
| 3. | 3.78 | Bullock County School District / 10,923 |
| 4. | 3.72 | Sumter County School District / 13,871 |
| 5. | 3.68 | Bibb County School District / 22,610 |
| 6. | 3.67 | Clarke County School District / 19,773 |
| 7. | 3.64 | Hale County School District / 16,168 |
| 8. | 3.62 | Conecuh County School District / 13,382 |
| 9. | 3.55 | Tarrant City School District / 6,723 |
| 10. | 3.52 | Selma City School District / 20,591 |
| 11. | 3.52 | Midfield City School District / 5,384 |
| 12. | 3.49 | Oneonta City School District / 6,453 |
| 13. | 3.49 | Greene County School District / 9,255 |
| 14. | 3.45 | Fort Rucker School District / 5,373 |
| 15. | 3.42 | Albertville City School District / 20,445 |
| 16. | 3.41 | Dallas County School District / 23,475 |
| 17. | 3.39 | Tuscaloosa City School District / 87,371 |
| 18. | 3.37 | Lanett City School District / 6,722 |
| 19. | 3.37 | Lowndes County School District / 11,731 |
| 20. | 3.34 | Russell County School District / 23,766 |
| 21. | 3.34 | Fairfield City School District / 11,284 |
| 22. | 3.34 | Maxwell AFB School District / 2,038 |
| 23. | 3.33 | Tuscaloosa County School District / 100,960 |
| 24. | 3.31 | Boaz City School District / 9,148 |
| 25. | 3.31 | Madison City School District / 40,293 |
| 26. | 3.30 | Choctaw County School District / 14,111 |
| 27. | 3.29 | Butler County School District / 20,895 |
| 28. | 3.28 | Mobile County School District / 395,448 |
| 29. | 3.28 | St. Clair County School District / 52,722 |
| 30. | 3.27 | Autauga County School District / 53,155 |
| 31. | 3.27 | Saraland City School District / 13,172 |
| 32. | 3.27 | Roanoke City School District / 6,154 |
| 33. | 3.27 | Cleburne County School District / 14,680 |
| 34. | 3.25 | Blount County School District / 50,239 |
| 35. | 3.24 | Demopolis City School District / 7,570 |
| 36. | 3.24 | Phenix City City School District / 31,704 |
| 37. | 3.23 | Eufaula City School District / 13,228 |
| 38. | 3.23 | Houston County School District / 35,860 |
| 39. | 3.21 | Covington County School District / 21,909 |
| 40. | 3.21 | DeKalb County School District / 56,176 |
| 41. | 3.21 | Madison County School District / 115,001 |
| 42. | 3.20 | Walker County School District / 53,305 |
| 43. | 3.19 | Birmingham City School District / 216,392 |
| 44. | 3.18 | Lee County School District / 54,279 |
| 45. | 3.18 | Trussville City School District / 18,349 |
| 46. | 3.18 | Bessemer City School District / 27,824 |
| 47. | 3.18 | Mountain Brook City School District / 20,381 |
| 48. | 3.18 | Oxford City School District / 22,522 |
| 49. | 3.17 | Fort Payne City School District / 13,862 |
| 50. | 3.17 | Dothan City School District / 64,299 |
| 51. | 3.16 | Montgomery County School District / 225,980 |
| 52. | 3.16 | Hartselle City School District / 13,187 |
| 53. | 3.16 | Tallassee City School District / 8,359 |
| 54. | 3.16 | Randolph County School District / 16,663 |
| 55. | 3.16 | Monroe County School District / 23,329 |
| 56. | 3.15 | Washington County School District / 17,556 |
| 57. | 3.15 | Shelby County School District / 164,982 |
| 58. | 3.14 | Pickens County School District / 19,917 |
| 59. | 3.14 | Escambia County School District / 32,605 |
| 60. | 3.13 | Arab City School District / 7,928 |
| 61. | 3.13 | Henry County School District / 17,148 |
| 62. | 3.13 | Chambers County School District / 27,857 |
| 63. | 3.13 | Marshall County School District / 46,285 |
| 64. | 3.12 | Homewood City School District / 25,078 |
| 65. | 3.12 | Jackson County School District / 38,591 |
| 66. | 3.12 | Crenshaw County School District / 13,928 |
| 67. | 3.12 | Andalusia City School District / 8,998 |
| 68. | 3.12 | Marengo County School District / 8,742 |
| 69. | 3.12 | Haleyville City School District / 8,318 |
| 70. | 3.12 | Calhoun County School District / 57,191 |
| 71. | 3.12 | Jefferson County School District / 228,073 |
| 72. | 3.11 | Brewton City School District / 5,391 |
| 73. | 3.11 | Pike County School District / 14,940 |
| 74. | 3.11 | Hoover City School District / 77,503 |
| 75. | 3.11 | Attalla City School District / 6,143 |
| 76. | 3.10 | Opp City School District / 6,701 |
| 77. | 3.10 | Chilton County School District / 43,121 |
| 78. | 3.10 | Talladega City School District / 15,993 |
| 79. | 3.10 | Barbour County School District / 14,471 |
| 80. | 3.10 | Talladega County School District / 49,588 |
| 81. | 3.09 | Vestavia Hills City School District / 33,305 |
| 82. | 3.09 | Tallapoosa County School District / 22,018 |
| 83. | 3.09 | Enterprise City School District / 25,285 |
| 84. | 3.08 | Etowah County School District / 59,770 |
| 85. | 3.08 | Guntersville City School District / 8,077 |
| 86. | 3.07 | Dale County School District / 15,912 |
| 87. | 3.07 | Huntsville City School District / 170,615 |
| 88. | 3.07 | Elba City School District / 5,150 |
| 89. | 3.07 | Jasper City School District / 14,307 |
| 90. | 3.06 | Perry County School District / 10,684 |
| 91. | 3.06 | Cullman County School District / 65,553 |
| 92. | 3.05 | Macon County School District / 21,699 |
| 93. | 3.05 | Muscle Shoals City School District / 12,910 |
| 94. | 3.05 | Decatur City School District / 55,253 |
| 95. | 3.04 | Lauderdale County School District / 52,941 |
| 96. | 3.04 | Auburn City School District / 51,057 |
| 97. | 3.04 | Morgan County School District / 49,292 |
| 98. | 3.04 | Coosa County School District / 11,470 |
| 99. | 3.04 | Alexander City City School District / 17,995 |
| 100. | 3.04 | Russellville City School District / 9,598 |
| 101. | 3.03 | Leeds City School District / 11,314 |
| 102. | 3.03 | Coffee County School District / 18,199 |
| 103. | 3.02 | Geneva County School District / 19,964 |
| 104. | 3.02 | Limestone County School District / 54,626 |
| 105. | 3.02 | Sylacauga City School District / 12,789 |
| 106. | 3.02 | Franklin County School District / 21,785 |
| 107. | 3.01 | Scottsboro City School District / 14,795 |
| 108. | 3.01 | Gadsden City School District / 37,162 |
| 109. | 3.01 | Colbert County School District / 24,080 |
| 110. | 3.01 | Elmore County School District / 70,812 |
| 111. | 3.01 | Cullman City School District / 14,363 |
| 112. | 3.01 | Daleville City School District / 10,325 |
| 113. | 3.00 | Jacksonville City School District / 11,791 |
| 114. | 3.00 | Lamar County School District / 14,743 |
| 115. | 3.00 | Baldwin County School District / 175,791 |
| 116. | 3.00 | Anniston City School District / 23,297 |
| 117. | 3.00 | Athens City School District / 21,059 |
| 118. | 2.99 | Opelika City School District / 25,867 |
| 119. | 2.99 | Geneva City School District / 6,577 |
| 120. | 2.99 | Linden City School District / 4,984 |
| 121. | 2.99 | Ozark City School District / 16,705 |
| 122. | 2.98 | Winston County School District / 16,854 |
| 123. | 2.97 | Lawrence County School District / 34,235 |
| 124. | 2.97 | Troy City School District / 17,207 |
| 125. | 2.93 | Pell City City School District / 26,136 |
| 126. | 2.93 | Winfield City School District / 6,658 |
| 127. | 2.92 | Fayette County School District / 15,650 |
| 128. | 2.90 | Piedmont City School District / 6,468 |
| 129. | 2.89 | Sheffield City School District / 9,141 |
| 130. | 2.88 | Tuscumbia City School District / 8,315 |
| 131. | 2.86 | Florence City School District / 38,821 |
| 132. | 2.84 | Marion County School District / 25,471 |
| 133. | 2.64 | Cherokee County School District / 25,700 |
| 134. | 2.64 | Clay County School District / 14,040 |
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.
