| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.10 | Sequatchie County School District / 13,377 |
| 2. | 3.55 | Bells City School District / 2,286 |
| 2. | 3.55 | Crockett County School District in Bells / 2,286 |
| 4. | 3.43 | Memphis City School District / 679,052 |
| 5. | 3.39 | Bedford County School District / 44,291 |
| 6. | 3.38 | Sweetwater City School District / 12,146 |
| 6. | 3.38 | Monroe County School District in Sweetwater / 12,146 |
| 8. | 3.36 | Fayette County School District / 36,820 |
| 9. | 3.36 | Alamo Town School District / 4,225 |
| 9. | 3.36 | Crockett County School District in Alamo / 4,225 |
| 11. | 3.35 | Rhea County School District in Dayton / 6,727 |
| 11. | 3.35 | Dayton City Elementary School District / 6,727 |
| 13. | 3.35 | Monroe County School District / 32,456 |
| 14. | 3.34 | Fort Campbell Schools / 5,008 |
| 15. | 3.34 | Bledsoe County School District / 12,941 |
| 16. | 3.32 | Smith County School District / 18,863 |
| 17. | 3.32 | DeKalb County School District / 18,624 |
| 18. | 3.32 | Scott County School District / 18,981 |
| 19. | 3.31 | Newport City Elementary School District / 7,420 |
| 19. | 3.31 | Cocke County School District in Newport / 7,420 |
| 21. | 3.31 | Warren County School District / 39,915 |
| 22. | 3.31 | Hickman County School District / 23,670 |
| 23. | 3.30 | Grainger County School District / 22,549 |
| 24. | 3.30 | White County School District / 24,897 |
| 25. | 3.29 | Williamson County School District / 130,603 |
| 26. | 3.29 | Lenoir City School District / 7,861 |
| 27. | 3.29 | Oneida Special School District / 2,871 |
| 28. | 3.28 | Stewart County School District / 13,078 |
| 29. | 3.27 | Robertson County School District / 63,521 |
| 30. | 3.27 | Van Buren County School District / 5,423 |
| 31. | 3.26 | Shelby County School District / 239,134 |
| 32. | 3.24 | Williamson County School District in Franklin / 34,923 |
| 32. | 3.24 | Franklin Special School District / 34,923 |
| 34. | 3.22 | Lawrence County School District / 40,899 |
| 35. | 3.22 | Nashville-Davidson County School District / 621,465 |
| 36. | 3.22 | Perry County School District / 7,694 |
| 37. | 3.22 | Lewis County School District / 11,466 |
| 38. | 3.19 | West Carroll Special District / 7,230 |
| 39. | 3.19 | Trousdale County School District / 7,682 |
| 40. | 3.19 | Athens City Elementary School District / 14,077 |
| 40. | 3.19 | McMinn County School District in Athens / 14,077 |
| 42. | 3.18 | Cheatham County School District / 39,042 |
| 43. | 3.17 | Wayne County School District / 16,592 |
| 44. | 3.17 | Fentress County School District / 17,412 |
| 45. | 3.17 | Sevier County School District / 83,448 |
| 46. | 3.17 | Grundy County School District / 14,262 |
| 47. | 3.16 | Putnam County School District / 69,938 |
| 48. | 3.15 | Rutherford County School District / 141,949 |
| 49. | 3.14 | Lauderdale County School District / 26,568 |
| 50. | 3.14 | Cannon County School District / 13,505 |
| 51. | 3.14 | Hollow Rock-Bruceton Special School District / 3,849 |
| 52. | 3.13 | Campbell County School District / 40,646 |
| 53. | 3.13 | Jefferson County School District / 50,116 |
| 54. | 3.13 | Alcoa City School District / 8,613 |
| 55. | 3.12 | Macon County School District / 21,708 |
| 56. | 3.12 | Sumner County School District / 151,874 |
| 57. | 3.11 | Moore County School District / 6,044 |
| 58. | 3.10 | Dickson County School District / 47,140 |
| 59. | 3.10 | Maryville City School District / 26,533 |
| 60. | 3.09 | Elizabethton City School District / 13,806 |
| 61. | 3.09 | Gibson County School District / 17,140 |
| 62. | 3.09 | Hamilton County School District / 330,941 |
| 63. | 3.09 | Jackson County School District / 10,896 |
| 64. | 3.08 | McNairy County School District / 25,436 |
| 65. | 3.08 | Wilson County School District / 79,216 |
| 66. | 3.08 | Unicoi County School District / 17,686 |
| 67. | 3.08 | Jackson-Madison Consolidated School District / 96,346 |
| 68. | 3.07 | Lebanon Special School District / 27,256 |
| 68. | 3.07 | Wilson County School District in Lebanon / 27,256 |
| 70. | 3.07 | Manchester City School District / 9,755 |
| 70. | 3.07 | Coffee County School District in Manchester / 9,755 |
| 72. | 3.07 | Name N/A / 260,879 |
| 73. | 3.06 | Haywood County School District / 19,155 |
| 74. | 3.06 | Johnson City School District / 58,266 |
| 75. | 3.05 | Cumberland County School District / 52,852 |
| 76. | 3.05 | Washington County School District / 58,484 |
| 77. | 3.05 | Cocke County School District / 27,986 |
| 78. | 3.04 | Henderson County School District / 18,942 |
| 79. | 3.04 | Anderson County School District / 39,520 |
| 80. | 3.04 | Hamblen County School District / 61,698 |
| 81. | 3.03 | Hawkins County School District in Rogersville / 4,291 |
| 81. | 3.03 | Rogersville Town Elementary School District / 4,291 |
| 83. | 3.02 | Giles County School District / 29,075 |
| 84. | 3.02 | Carter County School District / 45,149 |
| 85. | 3.02 | Bradley County School District / 55,931 |
| 86. | 3.02 | Maury County School District / 80,190 |
| 87. | 3.02 | Tullahoma City School District / 17,595 |
| 88. | 3.02 | Bradford Special School District / 3,496 |
| 89. | 3.02 | Blount County School District / 84,343 |
| 90. | 3.01 | Coffee County School District / 24,344 |
| 91. | 3.01 | Lincoln County School District / 25,672 |
| 92. | 3.01 | Tipton County School District / 57,543 |
| 93. | 3.00 | Murfreesboro City Elementary School District / 98,232 |
| 94. | 3.00 | Rhea County School District / 23,906 |
| 95. | 3.00 | Rutherford County School District in Murfreesboro / 97,870 |
| 96. | 3.00 | Montgomery County School District / 148,483 |
| 97. | 3.00 | Dyer County School District / 20,471 |
| 98. | 2.99 | Humboldt City School District / 9,125 |
| 99. | 2.99 | Houston County School District / 8,041 |
| 100. | 2.99 | Hardeman County School District / 27,759 |
| 101. | 2.99 | Milan City Special School District / 10,176 |
| 102. | 2.99 | Hawkins County School District / 49,607 |
| 103. | 2.98 | Dyersburg City School District / 17,227 |
| 104. | 2.98 | Union County School District / 18,927 |
| 105. | 2.98 | McMinn County School District / 34,242 |
| 106. | 2.98 | Hardin County School District / 26,093 |
| 107. | 2.98 | McKenzie Special School District / 7,646 |
| 108. | 2.98 | Knox County School District / 423,655 |
| 109. | 2.98 | Franklin County School District / 41,021 |
| 110. | 2.98 | Marshall County School District / 29,297 |
| 111. | 2.97 | Meigs County School District / 11,747 |
| 112. | 2.97 | Trenton Special School District / 8,649 |
| 113. | 2.96 | Decatur County School District / 11,472 |
| 114. | 2.96 | Oak Ridge City School District / 24,355 |
| 115. | 2.95 | Chester County School District / 16,106 |
| 116. | 2.94 | Loudon County School District / 37,315 |
| 117. | 2.94 | Huntingdon Special School District / 7,414 |
| 118. | 2.94 | Obion County School District / 21,075 |
| 119. | 2.93 | Roane County School District / 53,186 |
| 120. | 2.92 | Cleveland City School District / 39,253 |
| 121. | 2.92 | Union City School District / 10,535 |
| 122. | 2.92 | Crockett County School District / 7,897 |
| 123. | 2.90 | Claiborne County School District / 31,081 |
| 124. | 2.88 | Lake County School District / 7,404 |
| 125. | 2.87 | Humphreys County School District / 18,151 |
| 126. | 2.87 | McMinn County School District in Etowah / 3,736 |
| 126. | 2.87 | Etowah City Elementary School District / 3,736 |
| 128. | 2.86 | Clinton City Elementary School District / 9,507 |
| 128. | 2.86 | Anderson County School District in Clinton / 9,507 |
| 130. | 2.86 | Marion County School District / 27,087 |
| 131. | 2.86 | Polk County School District / 15,735 |
| 132. | 2.85 | South Carroll Special School District / 2,547 |
| 133. | 2.85 | Overton County School District / 20,816 |
| 134. | 2.83 | Morgan County School District / 19,294 |
| 135. | 2.79 | Benton County School District / 16,130 |
| 136. | 2.79 | Johnson County School District / 18,019 |
| 137. | 2.79 | Paris City Special School District / 11,461 |
| 137. | 2.79 | Henry County School District in Paris / 11,461 |
| 139. | 2.79 | Henry County School District / 20,106 |
| 140. | 2.79 | Lincoln County School District in Fayetteville / 7,092 |
| 140. | 2.79 | Fayetteville City Elementary School District / 7,092 |
| 142. | 2.78 | Henderson County School District in Lexington / 7,745 |
| 142. | 2.78 | Lexington City Elementary School District / 7,745 |
| 144. | 2.76 | Weakley County School District / 33,389 |
| 145. | 2.76 | Sullivan County School District / 86,411 |
| 146. | 2.76 | Greene County School District / 50,356 |
| 147. | 2.76 | Hancock County School District / 6,633 |
| 148. | 2.73 | Kingsport City School District / 44,494 |
| 149. | 2.73 | Greeneville City School District / 15,342 |
| 150. | 2.71 | Pickett County School District / 4,803 |
| 151. | 2.70 | Bristol City School District / 25,468 |
| 152. | 2.65 | Richard City Special School District / 873 |
| 153. | 2.62 | Clay County School District / 7,937 |
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.
