| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.17 | Fort Campbell Dependent Schools / 14,041 |
| 2. | 3.98 | Clay County School District / 23,792 |
| 3. | 3.91 | Wolfe County School District / 7,080 |
| 4. | 3.84 | Elliott County School District / 8,291 |
| 5. | 3.84 | Magoffin County School District / 13,132 |
| 6. | 3.83 | Robertson County School District / 2,234 |
| 7. | 3.73 | Fort Knox Dependent Schools / 12,017 |
| 8. | 3.57 | Morgan County School District / 14,204 |
| 9. | 3.56 | Anchorage Independent School District / 2,980 |
| 10. | 3.56 | Menifee County School District / 6,687 |
| 11. | 3.55 | Garrard County School District / 16,829 |
| 12. | 3.54 | Jackson Independent School District / 1,358 |
| 13. | 3.51 | Breathitt County School District / 14,283 |
| 14. | 3.50 | Cumberland County School District / 6,832 |
| 15. | 3.45 | Gallatin County School District / 8,090 |
| 16. | 3.44 | Marion County School District / 19,245 |
| 17. | 3.41 | Christian County School District / 65,585 |
| 18. | 3.40 | Whitley County School District / 22,703 |
| 19. | 3.36 | Silver Grove Independent School District / 1,531 |
| 20. | 3.36 | Martin County School District / 13,300 |
| 21. | 3.35 | Laurel County School District / 55,947 |
| 22. | 3.35 | Monticello Independent School District / 3,789 |
| 23. | 3.34 | Walton-Verona Independent School District / 5,981 |
| 24. | 3.34 | Bath County School District / 11,597 |
| 25. | 3.33 | Pendleton County School District / 14,951 |
| 26. | 3.33 | Dawson Springs Independent School District / 2,721 |
| 27. | 3.33 | Trimble County School District / 8,930 |
| 28. | 3.32 | Lawrence County School District / 16,338 |
| 29. | 3.30 | Meade County School District / 23,198 |
| 30. | 3.30 | Owsley County School District / 4,648 |
| 31. | 3.29 | Corbin Independent School District / 11,634 |
| 32. | 3.28 | Boone County School District / 106,533 |
| 33. | 3.28 | Hart County School District / 15,475 |
| 34. | 3.26 | Grant County School District / 22,058 |
| 35. | 3.25 | Adair County School District / 17,872 |
| 36. | 3.25 | Bracken County School District / 7,024 |
| 37. | 3.24 | Grayson County School District / 25,320 |
| 38. | 3.24 | Powell County School District / 13,589 |
| 39. | 3.23 | Perry County School District / 24,467 |
| 40. | 3.22 | Washington County School District / 11,365 |
| 41. | 3.22 | Estill County School District / 14,880 |
| 42. | 3.21 | Spencer County School District / 16,707 |
| 43. | 3.20 | Somerset Independent School District / 10,333 |
| 44. | 3.20 | Allen County School District / 18,799 |
| 45. | 3.20 | Barbourville Independent School District / 2,800 |
| 46. | 3.19 | Russell County School District / 17,127 |
| 47. | 3.19 | Campbellsville Independent School District / 8,633 |
| 48. | 3.19 | Harlan Independent School District / 3,232 |
| 49. | 3.19 | Johnson County School District / 20,083 |
| 50. | 3.19 | Mayfield Independent School District / 9,622 |
| 51. | 3.18 | Montgomery County School District / 25,093 |
| 52. | 3.18 | Larue County School District / 13,579 |
| 53. | 3.18 | Madison County School District / 74,750 |
| 54. | 3.18 | Williamsburg Independent School District / 5,432 |
| 55. | 3.17 | Fleming County School District / 14,604 |
| 56. | 3.16 | Ohio County School District / 23,498 |
| 57. | 3.16 | Lewis County School District / 13,840 |
| 58. | 3.16 | Laurel County School District for East Bernstadt ISD / 1,076 |
| 58. | 3.16 | East Bernstadt Independent School District / 1,076 |
| 60. | 3.15 | Knox County School District / 28,014 |
| 61. | 3.15 | Casey County School District / 16,306 |
| 62. | 3.15 | Taylor County School District / 15,470 |
| 63. | 3.15 | Hancock County School District / 8,601 |
| 64. | 3.13 | Monroe County School District / 11,650 |
| 65. | 3.13 | Greenup County School District / 20,196 |
| 66. | 3.13 | Bell County School District / 16,806 |
| 67. | 3.13 | Covington Independent School District / 34,798 |
| 68. | 3.12 | Fort Thomas Independent School District / 15,344 |
| 69. | 3.12 | Bardstown Independent School District / 12,271 |
| 70. | 3.12 | Breckinridge County School District / 17,642 |
| 71. | 3.12 | Russell Independent School District / 12,698 |
| 72. | 3.11 | Harlan County School District / 27,767 |
| 73. | 3.11 | Harrison County School District / 18,531 |
| 74. | 3.11 | Scott County School District / 42,874 |
| 75. | 3.11 | Hazard Independent School District / 4,668 |
| 76. | 3.11 | McCreary County School District / 18,199 |
| 77. | 3.10 | Newport Independent School District / 15,989 |
| 78. | 3.09 | Nelson County School District / 30,071 |
| 79. | 3.09 | Shelby County School District / 40,322 |
| 80. | 3.09 | Leslie County School District / 11,674 |
| 81. | 3.09 | Rockcastle County School District / 16,560 |
| 82. | 3.09 | Campbell County School District / 39,942 |
| 83. | 3.09 | Knott County School District / 17,197 |
| 84. | 3.09 | Bullitt County School District / 73,528 |
| 85. | 3.09 | Pulaski County School District / 47,876 |
| 86. | 3.09 | Jefferson County School District / 708,337 |
| 87. | 3.08 | Kenton County School District / 94,251 |
| 88. | 3.08 | Paintsville Independent School District / 3,754 |
| 89. | 3.08 | Rowan County School District / 22,549 |
| 90. | 3.08 | Boyle County School District / 15,791 |
| 91. | 3.07 | Floyd County School District / 41,965 |
| 92. | 3.07 | Mercer County School District / 19,150 |
| 93. | 3.07 | Eminence Independent School District / 3,262 |
| 94. | 3.07 | Bowling Green Independent School District / 25,001 |
| 95. | 3.07 | Augusta Independent School District / 1,594 |
| 96. | 3.06 | Jessamine County School District / 45,551 |
| 97. | 3.06 | Beechwood Independent School District / 5,437 |
| 98. | 3.06 | Barren County School District / 26,114 |
| 99. | 3.06 | Wayne County School District / 16,786 |
| 100. | 3.06 | Logan County School District / 20,641 |
| 101. | 3.05 | Raceland-Worthington Independent School District / 4,623 |
| 102. | 3.05 | Oldham County School District / 56,194 |
| 103. | 3.05 | Carroll County School District / 10,536 |
| 104. | 3.04 | Fayette County School District / 287,537 |
| 105. | 3.04 | Caldwell County School District / 12,822 |
| 106. | 3.03 | Warren County School District / 79,493 |
| 107. | 3.03 | Middlesboro Independent School District / 9,899 |
| 108. | 3.03 | Crittenden County School District / 9,108 |
| 109. | 3.02 | Southgate Independent School District / 3,301 |
| 110. | 3.02 | Todd County School District / 12,043 |
| 111. | 3.02 | Graves County School District / 27,894 |
| 112. | 3.02 | Bellevue Independent School District / 5,912 |
| 113. | 3.01 | Dayton Independent School District / 5,490 |
| 114. | 3.01 | Nicholas County School District / 6,921 |
| 115. | 3.01 | Webster County School District / 13,829 |
| 116. | 3.00 | Henry County School District / 12,580 |
| 117. | 3.00 | Anderson County School District / 21,122 |
| 118. | 2.99 | Hopkins County School District / 43,513 |
| 119. | 2.98 | Pineville Independent School District / 2,388 |
| 120. | 2.98 | Butler County School District / 13,337 |
| 121. | 2.98 | Woodford County School District / 24,482 |
| 122. | 2.97 | Erlanger-Elsmere Independent School District / 16,407 |
| 123. | 2.97 | Green County School District / 11,513 |
| 124. | 2.95 | Carter County School District / 27,160 |
| 125. | 2.94 | Metcalfe County School District / 10,115 |
| 126. | 2.94 | Danville Independent School District / 13,123 |
| 127. | 2.94 | Daviess County School District / 66,305 |
| 128. | 2.93 | Jenkins Independent School District / 3,429 |
| 129. | 2.92 | Letcher County School District / 20,486 |
| 130. | 2.92 | Caverna Independent School District / 5,512 |
| 131. | 2.92 | Berea Independent School District / 6,584 |
| 132. | 2.92 | Jackson County School District / 13,399 |
| 133. | 2.92 | Paris Independent School District / 5,278 |
| 134. | 2.91 | Name N/A / 3,742 |
| 135. | 2.91 | Owen County School District / 11,295 |
| 136. | 2.91 | Franklin County School District / 43,658 |
| 137. | 2.91 | Henderson County School District / 45,274 |
| 138. | 2.91 | Calloway County School District / 25,859 |
| 139. | 2.90 | Clinton County School District / 9,443 |
| 140. | 2.90 | Science Hill Independent School District / 1,728 |
| 140. | 2.90 | Pulaski County School District for Science Hill ISD / 1,728 |
| 142. | 2.90 | Lee County School District / 7,427 |
| 143. | 2.90 | Bourbon County School District / 14,390 |
| 144. | 2.90 | Trigg County School District / 13,231 |
| 145. | 2.89 | Marshall County School District / 31,075 |
| 146. | 2.89 | Mason County School District / 17,174 |
| 147. | 2.89 | Burgin Independent School District / 2,584 |
| 148. | 2.88 | Hickman County School District / 4,923 |
| 149. | 2.88 | Hardin County School District / 79,406 |
| 150. | 2.88 | Lincoln County School District / 25,076 |
| 151. | 2.88 | Williamstown Independent School District / 3,030 |
| 152. | 2.88 | Clark County School District / 35,481 |
| 153. | 2.88 | Glasgow Independent School District / 12,140 |
| 154. | 2.87 | Frankfort Independent School District / 5,008 |
| 155. | 2.87 | Boyd County School District / 23,476 |
| 156. | 2.86 | McCracken County School District / 43,432 |
| 157. | 2.86 | Ludlow Independent School District / 5,506 |
| 158. | 2.85 | Edmonson County School District / 11,941 |
| 159. | 2.84 | Livingston County School District / 9,609 |
| 160. | 2.84 | Carlisle County School District / 5,205 |
| 161. | 2.84 | Simpson County School District / 17,001 |
| 162. | 2.81 | Ashland Independent School District / 21,701 |
| 163. | 2.80 | Muhlenberg County School District / 31,378 |
| 164. | 2.80 | Paducah Independent School District / 21,627 |
| 165. | 2.80 | Owensboro Independent School District / 27,670 |
| 166. | 2.79 | Cloverport Independent School District / 1,415 |
| 167. | 2.79 | McLean County School District / 9,690 |
| 168. | 2.77 | Murray Independent School District / 10,177 |
| 169. | 2.77 | Ballard County School District / 8,181 |
| 170. | 2.76 | Union County School District / 15,158 |
| 171. | 2.76 | Elizabethtown Independent School District / 9,784 |
| 172. | 2.72 | Fairview Independent School District / 3,492 |
| 173. | 2.70 | Pike County School District / 59,320 |
| 174. | 2.68 | Elizabethtown Independent School District for West Point ISD / 938 |
| 174. | 2.68 | West Point Independent School District / 938 |
| 176. | 2.64 | Fulton Independent School District / 3,176 |
| 177. | 2.63 | Russellville Independent School District / 6,399 |
| 178. | 2.53 | Fulton County School District / 3,742 |
| 179. | 2.50 | Pikeville Independent School District / 6,204 |
| 180. | 2.46 | Lyon County School District / 8,325 |
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.
