| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.04 | Glades County School District / 13,190 |
| 2. | 3.95 | Hardee County School District / 27,549 |
| 3. | 3.88 | Dade County School District / 2,600,861 |
| 4. | 3.86 | Hendry County School District / 38,360 |
| 5. | 3.79 | Osceola County School District / 289,449 |
| 6. | 3.65 | Seminole County School District / 432,135 |
| 7. | 3.64 | Liberty County School District / 8,302 |
| 8. | 3.52 | DeSoto County School District / 34,785 |
| 9. | 3.52 | Columbia County School District / 67,662 |
| 10. | 3.51 | Orange County School District / 1,200,241 |
| 11. | 3.51 | Broward County School District / 1,815,269 |
| 12. | 3.47 | Okeechobee County School District / 39,398 |
| 13. | 3.41 | Washington County School District / 24,660 |
| 14. | 3.40 | Bradford County School District / 27,552 |
| 15. | 3.40 | Baker County School District / 27,057 |
| 16. | 3.40 | Polk County School District / 617,323 |
| 17. | 3.38 | Hillsborough County School District / 1,279,668 |
| 18. | 3.36 | Monroe County School District / 75,208 |
| 19. | 3.36 | Duval County School District / 880,750 |
| 20. | 3.35 | Clay County School District / 194,868 |
| 21. | 3.34 | Escambia County School District / 304,099 |
| 22. | 3.33 | Calhoun County School District / 14,657 |
| 23. | 3.32 | Union County School District / 15,258 |
| 24. | 3.32 | Holmes County School District / 19,741 |
| 25. | 3.31 | Jackson County School District / 49,105 |
| 26. | 3.31 | Lafayette County School District / 8,821 |
| 27. | 3.31 | Suwannee County School District / 43,404 |
| 28. | 3.30 | Putnam County School District / 73,191 |
| 29. | 3.29 | Palm Beach County School District / 1,359,074 |
| 30. | 3.28 | Flagler County School District / 98,843 |
| 31. | 3.28 | St. Lucie County School District / 283,988 |
| 32. | 3.27 | Gadsden County School District / 46,865 |
| 33. | 3.26 | Collier County School District / 334,474 |
| 34. | 3.26 | Lee County School District / 647,554 |
| 35. | 3.22 | Madison County School District / 18,901 |
| 36. | 3.21 | Volusia County School District / 498,981 |
| 37. | 3.20 | Levy County School District / 40,057 |
| 38. | 3.19 | Alachua County School District / 251,759 |
| 39. | 3.19 | Bay County School District / 172,988 |
| 40. | 3.17 | Santa Rosa County School District / 158,240 |
| 41. | 3.17 | St. Johns County School District / 203,402 |
| 42. | 3.17 | Dixie County School District / 16,137 |
| 43. | 3.17 | Pasco County School District / 472,745 |
| 44. | 3.16 | Nassau County School District / 74,918 |
| 45. | 3.14 | Taylor County School District / 22,690 |
| 46. | 3.13 | Lake County School District / 305,010 |
| 47. | 3.13 | Okaloosa County School District / 188,984 |
| 48. | 3.12 | Manatee County School District / 335,840 |
| 49. | 3.12 | Brevard County School District / 548,891 |
| 50. | 3.11 | Indian River County School District / 140,918 |
| 51. | 3.11 | Walton County School District / 57,821 |
| 52. | 3.11 | Martin County School District / 149,658 |
| 53. | 3.10 | Gulf County School District / 15,781 |
| 54. | 3.09 | Leon County School District / 280,882 |
| 55. | 3.09 | Highlands County School District / 98,261 |
| 56. | 3.07 | Pinellas County School District / 925,030 |
| 57. | 3.07 | Marion County School District / 334,771 |
| 58. | 3.04 | Hernando County School District / 173,792 |
| 59. | 3.03 | Gilchrist County School District / 16,948 |
| 60. | 3.01 | Wakulla County School District / 31,015 |
| 61. | 2.96 | Hamilton County School District / 14,466 |
| 62. | 2.89 | Franklin County School District / 11,636 |
| 63. | 2.85 | Citrus County School District / 139,771 |
| 64. | 2.83 | Sarasota County School District / 386,944 |
| 65. | 2.80 | Charlotte County School District / 163,151 |
| 66. | 2.80 | Jefferson County School District / 14,335 |
| 67. | 2.42 | Sumter County School District / 103,708 |
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.
