| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.51 | Memphis City School District / 651,050 |
| 2. | 3.50 | Fort Campbell Schools / 6,103 |
| 3. | 3.45 | Hollow Rock-Bruceton Special School District / 3,812 |
| 4. | 3.39 | Hardeman County School District / 27,193 |
| 5. | 3.38 | Rhea County School District in Dayton / 7,217 |
| 5. | 3.38 | Dayton City Elementary School District / 7,217 |
| 7. | 3.36 | Jackson-Madison Consolidated School District / 97,976 |
| 8. | 3.34 | Rutherford County School District / 154,651 |
| 9. | 3.34 | West Carroll Special District / 7,038 |
| 10. | 3.34 | Bedford County School District / 45,060 |
| 11. | 3.33 | Shelby County School District / 278,387 |
| 12. | 3.33 | Haywood County School District / 18,673 |
| 13. | 3.31 | Lenoir City School District / 8,634 |
| 14. | 3.30 | Milan City Special School District / 10,209 |
| 15. | 3.30 | Gibson County School District / 18,750 |
| 16. | 3.30 | Tipton County School District / 61,038 |
| 17. | 3.30 | Scott County School District / 19,079 |
| 18. | 3.28 | Williamson County School District / 147,637 |
| 19. | 3.28 | South Carroll Special School District / 2,826 |
| 20. | 3.27 | Huntingdon Special School District / 7,696 |
| 21. | 3.26 | McNairy County School District / 26,001 |
| 22. | 3.25 | Oneida Special School District / 3,117 |
| 23. | 3.25 | Robertson County School District / 66,143 |
| 24. | 3.24 | White County School District / 25,863 |
| 25. | 3.24 | Van Buren County School District / 5,552 |
| 26. | 3.23 | Smith County School District / 19,157 |
| 27. | 3.22 | Grundy County School District / 13,751 |
| 28. | 3.22 | Trousdale County School District / 7,827 |
| 29. | 3.22 | Warren County School District / 39,767 |
| 30. | 3.22 | Montgomery County School District / 167,035 |
| 31. | 3.21 | Nashville-Davidson County School District / 629,113 |
| 32. | 3.20 | Crockett County School District in Bells / 3,727 |
| 32. | 3.20 | Bells City School District / 3,727 |
| 34. | 3.19 | McMinn County School District in Athens / 13,492 |
| 34. | 3.19 | Athens City Elementary School District / 13,492 |
| 36. | 3.19 | DeKalb County School District / 18,770 |
| 37. | 3.19 | Trenton Special School District / 8,783 |
| 38. | 3.18 | Union County School District / 19,179 |
| 39. | 3.18 | Macon County School District / 22,265 |
| 40. | 3.18 | Sequatchie County School District / 14,173 |
| 41. | 3.18 | Bradley County School District / 57,768 |
| 42. | 3.17 | Chester County School District / 17,043 |
| 43. | 3.17 | Hickman County School District / 24,481 |
| 44. | 3.17 | Cleveland City School District / 41,461 |
| 45. | 3.16 | Rutherford County School District in Murfreesboro / 109,164 |
| 45. | 3.16 | Murfreesboro City Elementary School District / 109,164 |
| 47. | 3.16 | Rhea County School District / 24,600 |
| 48. | 3.16 | Lawrence County School District / 41,779 |
| 49. | 3.15 | Lauderdale County School District / 27,772 |
| 50. | 3.15 | Monroe County School District in Sweetwater / 12,141 |
| 50. | 3.15 | Sweetwater City School District / 12,141 |
| 52. | 3.15 | Hamblen County School District / 62,528 |
| 53. | 3.14 | McKenzie Special School District / 7,114 |
| 54. | 3.14 | Jefferson County School District / 51,541 |
| 55. | 3.14 | Lebanon Special School District / 30,046 |
| 55. | 3.14 | Wilson County School District in Lebanon / 30,046 |
| 57. | 3.14 | Polk County School District / 16,756 |
| 58. | 3.14 | Sumner County School District / 161,206 |
| 59. | 3.13 | Wilson County School District / 84,572 |
| 60. | 3.13 | Cheatham County School District / 39,103 |
| 61. | 3.13 | Franklin Special School District / 36,588 |
| 61. | 3.13 | Williamson County School District in Franklin / 36,588 |
| 63. | 3.13 | Dickson County School District / 49,704 |
| 64. | 3.12 | Marshall County School District / 30,585 |
| 65. | 3.12 | Name N/A / 277,334 |
| 66. | 3.12 | Campbell County School District / 40,629 |
| 67. | 3.12 | Hardin County School District / 25,987 |
| 68. | 3.12 | Putnam County School District / 72,172 |
| 69. | 3.11 | Moore County School District / 6,349 |
| 70. | 3.11 | Bradford Special School District / 3,445 |
| 71. | 3.11 | Jackson County School District / 11,526 |
| 72. | 3.10 | Coffee County School District in Manchester / 9,956 |
| 72. | 3.10 | Manchester City School District / 9,956 |
| 74. | 3.10 | Hamilton County School District / 337,023 |
| 75. | 3.10 | Fayette County School District / 38,370 |
| 76. | 3.10 | Dyer County School District / 21,102 |
| 77. | 3.10 | Maryville City School District / 27,433 |
| 78. | 3.10 | Maury County School District / 80,965 |
| 79. | 3.10 | Coffee County School District / 25,332 |
| 80. | 3.10 | Claiborne County School District / 32,025 |
| 81. | 3.10 | Lewis County School District / 12,050 |
| 82. | 3.07 | Bledsoe County School District / 12,898 |
| 83. | 3.07 | Anderson County School District / 39,017 |
| 84. | 3.06 | Fayetteville City Elementary School District / 6,887 |
| 84. | 3.06 | Lincoln County School District in Fayetteville / 6,887 |
| 86. | 3.06 | Knox County School District / 433,207 |
| 87. | 3.06 | Cannon County School District / 13,797 |
| 88. | 3.06 | Perry County School District / 7,856 |
| 89. | 3.06 | Humboldt City School District / 8,407 |
| 90. | 3.06 | Alcoa City School District / 8,321 |
| 91. | 3.05 | Obion County School District / 20,886 |
| 92. | 3.05 | Giles County School District / 29,439 |
| 93. | 3.05 | Lexington City Elementary School District / 7,703 |
| 93. | 3.05 | Henderson County School District in Lexington / 7,703 |
| 95. | 3.04 | Union City School District / 10,835 |
| 96. | 3.04 | Marion County School District / 27,330 |
| 97. | 3.04 | Unicoi County School District / 18,287 |
| 98. | 3.04 | Tullahoma City School District / 17,565 |
| 99. | 3.04 | Anderson County School District in Clinton / 9,827 |
| 99. | 3.04 | Clinton City Elementary School District / 9,827 |
| 101. | 3.04 | Henderson County School District / 20,132 |
| 102. | 3.04 | Crockett County School District / 6,540 |
| 103. | 3.03 | Morgan County School District / 21,882 |
| 104. | 3.03 | Grainger County School District / 22,613 |
| 105. | 3.03 | Oak Ridge City School District / 29,235 |
| 106. | 3.03 | Monroe County School District / 32,539 |
| 107. | 3.03 | Lincoln County School District / 26,408 |
| 108. | 3.02 | Paris City Special School District / 11,397 |
| 108. | 3.02 | Henry County School District in Paris / 11,397 |
| 110. | 3.02 | Elizabethton City School District / 14,228 |
| 111. | 3.02 | McMinn County School District / 35,326 |
| 112. | 3.01 | Stewart County School District / 13,262 |
| 113. | 3.01 | Richard City Special School District / 854 |
| 114. | 3.00 | Overton County School District / 22,040 |
| 115. | 2.99 | Blount County School District / 87,332 |
| 116. | 2.99 | Lake County School District / 7,780 |
| 117. | 2.99 | Alamo Town School District / 4,300 |
| 117. | 2.99 | Crockett County School District in Alamo / 4,300 |
| 119. | 2.99 | Johnson City School District / 59,839 |
| 120. | 2.98 | Humphreys County School District / 18,428 |
| 121. | 2.97 | Roane County School District / 50,987 |
| 122. | 2.96 | Wayne County School District / 17,015 |
| 123. | 2.95 | Cumberland County School District / 56,144 |
| 124. | 2.95 | Houston County School District / 8,375 |
| 125. | 2.94 | Meigs County School District / 11,696 |
| 126. | 2.94 | Franklin County School District / 40,972 |
| 127. | 2.94 | Cocke County School District / 28,663 |
| 128. | 2.94 | Fentress County School District / 17,945 |
| 129. | 2.94 | Henry County School District / 20,874 |
| 130. | 2.93 | Hawkins County School District / 49,442 |
| 131. | 2.91 | Etowah City Elementary School District / 3,507 |
| 131. | 2.91 | McMinn County School District in Etowah / 3,507 |
| 133. | 2.91 | Benton County School District / 16,420 |
| 134. | 2.91 | Dyersburg City School District / 17,132 |
| 135. | 2.89 | Hancock County School District / 6,759 |
| 136. | 2.89 | Weakley County School District / 34,802 |
| 137. | 2.88 | Greeneville City School District / 15,217 |
| 138. | 2.88 | Bristol City School District / 26,482 |
| 139. | 2.87 | Sullivan County School District / 82,036 |
| 140. | 2.87 | Loudon County School District / 39,952 |
| 141. | 2.87 | Rogersville Town Elementary School District / 4,414 |
| 141. | 2.87 | Hawkins County School District in Rogersville / 4,414 |
| 143. | 2.87 | Decatur County School District / 11,732 |
| 144. | 2.86 | Clay County School District / 7,842 |
| 145. | 2.86 | Washington County School District / 63,001 |
| 146. | 2.86 | Carter County School District / 43,303 |
| 147. | 2.85 | Sevier County School District / 90,218 |
| 148. | 2.84 | Kingsport City School District / 51,026 |
| 149. | 2.82 | Cocke County School District in Newport / 6,968 |
| 149. | 2.82 | Newport City Elementary School District / 6,968 |
| 151. | 2.78 | Johnson County School District / 18,199 |
| 152. | 2.77 | Greene County School District / 53,538 |
| 153. | 2.41 | Pickett County School District / 5,108 |
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.
