| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.52 | Hardee County School District / 27,731 |
| 2. | 3.48 | Hendry County School District / 39,140 |
| 3. | 3.33 | Dade County School District / 2,496,435 |
| 4. | 3.30 | Osceola County School District / 268,685 |
| 5. | 3.21 | Baker County School District / 27,115 |
| 6. | 3.19 | Orange County School District / 1,145,956 |
| 7. | 3.14 | Broward County School District / 1,748,066 |
| 8. | 3.13 | Okeechobee County School District / 39,996 |
| 8. | 3.13 | Union County School District / 15,535 |
| 8. | 3.13 | Clay County School District / 190,865 |
| 11. | 3.12 | Gadsden County School District / 46,389 |
| 12. | 3.11 | Hillsborough County School District / 1,229,226 |
| 13. | 3.10 | DeSoto County School District / 34,862 |
| 13. | 3.10 | Lafayette County School District / 8,870 |
| 15. | 3.05 | Liberty County School District / 8,365 |
| 15. | 3.05 | Seminole County School District / 422,718 |
| 15. | 3.05 | Polk County School District / 602,095 |
| 15. | 3.05 | Hamilton County School District / 14,799 |
| 19. | 3.04 | Duval County School District / 864,263 |
| 20. | 3.03 | Calhoun County School District / 14,625 |
| 20. | 3.03 | Wakulla County School District / 30,776 |
| 22. | 3.02 | Gilchrist County School District / 16,939 |
| 23. | 3.00 | Madison County School District / 19,224 |
| 23. | 3.00 | Columbia County School District / 67,531 |
| 25. | 2.99 | Bradford County School District / 28,520 |
| 25. | 2.99 | St. Lucie County School District / 277,789 |
| 25. | 2.99 | Santa Rosa County School District / 151,372 |
| 28. | 2.97 | Putnam County School District / 74,364 |
| 28. | 2.97 | Palm Beach County School District / 1,320,134 |
| 28. | 2.97 | Washington County School District / 24,896 |
| 28. | 2.97 | Suwannee County School District / 41,551 |
| 32. | 2.96 | Holmes County School District / 19,927 |
| 32. | 2.96 | Escambia County School District / 297,619 |
| 32. | 2.96 | Glades County School District / 12,884 |
| 35. | 2.95 | St. Johns County School District / 190,039 |
| 36. | 2.94 | Leon County School District / 275,487 |
| 37. | 2.93 | Nassau County School District / 73,314 |
| 37. | 2.93 | Taylor County School District / 22,570 |
| 39. | 2.92 | Jackson County School District / 49,746 |
| 39. | 2.92 | Okaloosa County School District / 180,822 |
| 39. | 2.92 | Bay County School District / 168,852 |
| 42. | 2.91 | Levy County School District / 40,801 |
| 42. | 2.91 | Alachua County School District / 247,336 |
| 44. | 2.90 | Pasco County School District / 464,697 |
| 45. | 2.89 | Jefferson County School District / 14,761 |
| 46. | 2.88 | Dixie County School District / 16,422 |
| 47. | 2.87 | Walton County School District / 55,043 |
| 48. | 2.86 | Lake County School District / 297,052 |
| 49. | 2.85 | Manatee County School District / 322,833 |
| 50. | 2.84 | Volusia County School District / 494,593 |
| 50. | 2.84 | Collier County School District / 321,520 |
| 50. | 2.84 | Brevard County School District / 543,376 |
| 53. | 2.83 | Gulf County School District / 15,863 |
| 54. | 2.82 | Flagler County School District / 95,696 |
| 54. | 2.82 | Hernando County School District / 172,778 |
| 56. | 2.81 | Lee County School District / 618,754 |
| 57. | 2.80 | Marion County School District / 331,298 |
| 58. | 2.79 | Franklin County School District / 11,549 |
| 58. | 2.79 | Pinellas County School District / 916,542 |
| 60. | 2.77 | Indian River County School District / 138,028 |
| 61. | 2.75 | Martin County School District / 146,318 |
| 62. | 2.74 | Highlands County School District / 98,786 |
| 63. | 2.70 | Monroe County School District / 73,090 |
| 64. | 2.64 | Sarasota County School District / 379,448 |
| 65. | 2.63 | Citrus County School District / 141,236 |
| 66. | 2.57 | Charlotte County School District / 159,978 |
| 67. | 2.37 | Sumter County School District / 93,420 |
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.
