| Rank | Average Household Size ▼ | School District / Population |
| 1. | 3.08 | Fort Jackson Schools / 14,761 |
| 1. | 3.08 | Richland County School District 2 within Fort Jackson / 14,761 |
| 3. | 3.07 | Name N/A / 15,710 |
| 4. | 2.89 | Jasper County School District / 26,042 |
| 5. | 2.83 | Orangeburg School District 4 / 20,108 |
| 6. | 2.82 | Beaufort County School District within Beaufort Marine Corps Air Station / 949 |
| 6. | 2.82 | Beaufort Marine Corps Air Station School District / 949 |
| 8. | 2.82 | Barnwell School District 29 / 5,368 |
| 9. | 2.79 | Dillon School District 3 / 8,077 |
| 10. | 2.78 | Dorchester School District 2 / 126,476 |
| 11. | 2.78 | York School District 2 / 36,439 |
| 12. | 2.78 | Anderson School District 3 / 15,039 |
| 13. | 2.75 | York School District 4 / 54,198 |
| 14. | 2.75 | Berkeley County School District / 188,835 |
| 15. | 2.75 | Lexington School District 4 / 18,396 |
| 16. | 2.74 | York School District 1 / 32,570 |
| 17. | 2.73 | Name N/A / 32,411 |
| 18. | 2.73 | Anderson School District 1 / 49,874 |
| 19. | 2.72 | Clarendon School District 3 / 6,573 |
| 20. | 2.71 | Saluda County School District / 15,250 |
| 21. | 2.71 | Spartanburg School District 2 / 58,913 |
| 22. | 2.71 | Florence School District 5 / 5,213 |
| 23. | 2.70 | Spartanburg School District 5 / 42,810 |
| 24. | 2.69 | Orangeburg School District 3 / 20,466 |
| 25. | 2.69 | Williamsburg County School District / 33,560 |
| 26. | 2.68 | Florence School District 2 / 6,878 |
| 27. | 2.67 | Lancaster County School District / 79,515 |
| 28. | 2.67 | Spartanburg School District 6 / 61,345 |
| 29. | 2.67 | Lexington School District 1 / 126,307 |
| 30. | 2.66 | Cherokee County School District / 53,716 |
| 31. | 2.65 | Spartanburg School District 4 / 18,504 |
| 32. | 2.65 | Chester County School District / 32,708 |
| 33. | 2.63 | Richland School District 2 / 128,949 |
| 34. | 2.63 | Florence School District 3 / 19,559 |
| 35. | 2.63 | Edgefield County School District / 26,573 |
| 36. | 2.63 | Name N/A / 107,782 |
| 37. | 2.62 | Lee County School District / 18,708 |
| 38. | 2.62 | Clarendon School District 2 / 18,553 |
| 39. | 2.61 | Barnwell School District 19 / 5,004 |
| 40. | 2.61 | Hampton School District 2 / 7,475 |
| 41. | 2.61 | Dillon School District 2 / 23,452 |
| 42. | 2.60 | Marlboro County School District / 28,294 |
| 43. | 2.59 | Lexington School District 5 / 93,939 |
| 44. | 2.59 | Florence School District 1 / 100,376 |
| 45. | 2.58 | Greenville County School District / 482,484 |
| 46. | 2.57 | Kershaw County School District / 62,342 |
| 47. | 2.57 | Colleton County School District / 38,247 |
| 48. | 2.57 | Hampton School District 1 / 13,195 |
| 49. | 2.57 | Georgetown County School District / 60,389 |
| 50. | 2.56 | Anderson School District 2 / 23,295 |
| 51. | 2.56 | Spartanburg School District 3 / 16,307 |
| 52. | 2.56 | Spartanburg School District 1 / 29,714 |
| 53. | 2.56 | Newberry County School District / 37,593 |
| 54. | 2.56 | Chesterfield County School District / 46,333 |
| 55. | 2.55 | Allendale County School District / 10,027 |
| 56. | 2.55 | Greenwood School District 52 / 7,364 |
| 57. | 2.55 | Darlington County School District / 68,161 |
| 58. | 2.54 | Pickens County School District / 119,577 |
| 59. | 2.54 | Florence School District 4 / 6,032 |
| 60. | 2.53 | Laurens School District 56 / 20,894 |
| 61. | 2.52 | Aiken County School District / 165,978 |
| 62. | 2.52 | Greenwood School District 50 / 58,892 |
| 63. | 2.52 | Barnwell School District 45 / 11,915 |
| 64. | 2.51 | Greenwood School District 51 / 7,101 |
| 65. | 2.50 | York School District 3 / 112,078 |
| 66. | 2.50 | Bamberg School District 1 / 8,611 |
| 67. | 2.50 | Bamberg School District 2 / 7,038 |
| 68. | 2.49 | Beaufort County School District / 167,504 |
| 69. | 2.49 | Laurens School District 55 / 36,736 |
| 70. | 2.49 | Orangeburg School District 5 / 50,688 |
| 71. | 2.48 | Abbeville County School District / 23,891 |
| 72. | 2.47 | Lexington School District 3 / 12,749 |
| 73. | 2.44 | Fairfield County School District / 23,382 |
| 74. | 2.44 | Oconee County School District / 74,656 |
| 75. | 2.43 | Anderson School District 5 / 79,906 |
| 76. | 2.43 | Horry County School District / 283,280 |
| 77. | 2.42 | Calhoun County School District / 15,031 |
| 78. | 2.42 | Charleston County School District / 365,674 |
| 79. | 2.40 | Dorchester School District 4 / 16,296 |
| 80. | 2.39 | Anderson School District 4 / 21,928 |
| 81. | 2.39 | Clarendon School District 1 / 9,313 |
| 82. | 2.38 | Richland School District 1 / 206,981 |
| 83. | 2.37 | Union County School District / 28,329 |
| 84. | 2.35 | Lexington School District 2 / 63,624 |
| 85. | 2.32 | Spartanburg School District 7 / 53,770 |
| 86. | 2.14 | McCormick County School District / 10,003 |
Please note that we only rank locations with 'Average Household Size' data. The rank above might not be a complete list. Locations without 'Average Household Size' data are not listed.
