| Rank | Average Household Size ▼ | School District / Population |
| 1. | 2.82 | Fort Jackson Schools / 14,309 |
| 1. | 2.82 | Richland County School District 2 within Fort Jackson / 14,309 |
| 3. | 2.76 | Florence School District 5 / 5,943 |
| 4. | 2.73 | Jasper County School District / 24,777 |
| 5. | 2.72 | Lexington School District 4 / 18,306 |
| 6. | 2.71 | Clarendon School District 3 / 6,808 |
| 7. | 2.70 | Dillon School District 2 / 18,998 |
| 7. | 2.70 | Dorchester School District 2 / 119,266 |
| 7. | 2.70 | York School District 4 / 49,865 |
| 10. | 2.69 | Hampton School District 2 / 7,387 |
| 11. | 2.68 | Anderson School District 1 / 49,808 |
| 12. | 2.66 | Berkeley County School District / 177,843 |
| 13. | 2.65 | York School District 1 / 31,112 |
| 14. | 2.64 | Lexington School District 1 / 121,030 |
| 14. | 2.64 | Sumter School District 2 / 57,252 |
| 14. | 2.64 | Spartanburg School District 5 / 41,867 |
| 17. | 2.63 | York School District 2 / 34,368 |
| 17. | 2.63 | Spartanburg School District 2 / 58,308 |
| 17. | 2.63 | Florence School District 3 / 20,584 |
| 17. | 2.63 | Dillon School District 3 / 7,602 |
| 21. | 2.62 | Marion School District 7 / 6,077 |
| 21. | 2.62 | Florence School District 4 / 6,768 |
| 21. | 2.62 | Anderson School District 3 / 15,156 |
| 24. | 2.61 | Saluda County School District / 15,200 |
| 24. | 2.61 | Richland School District 2 / 126,150 |
| 26. | 2.60 | Florence School District 2 / 7,127 |
| 26. | 2.60 | Spartanburg School District 6 / 58,687 |
| 28. | 2.59 | Orangeburg School District 4 / 20,430 |
| 29. | 2.57 | Clarendon School District 2 / 19,243 |
| 30. | 2.56 | Kershaw County School District / 61,697 |
| 30. | 2.56 | Spartanburg School District 4 / 18,439 |
| 30. | 2.56 | Edgefield County School District / 26,985 |
| 30. | 2.56 | Chester County School District / 33,140 |
| 34. | 2.55 | Lexington School District 5 / 91,018 |
| 35. | 2.54 | Lee County School District / 19,220 |
| 35. | 2.54 | Darlington County School District / 68,681 |
| 35. | 2.54 | Colleton County School District / 38,892 |
| 35. | 2.54 | Cherokee County School District / 53,383 |
| 35. | 2.54 | Sumter School District 17 / 50,204 |
| 40. | 2.53 | Barnwell School District 19 / 5,096 |
| 40. | 2.53 | Hampton School District 1 / 13,703 |
| 40. | 2.53 | Barnwell School District 45 / 12,382 |
| 40. | 2.53 | Williamsburg County School District / 34,423 |
| 40. | 2.53 | Dillon School District 1 / 5,462 |
| 45. | 2.52 | Orangeburg School District 3 / 20,121 |
| 45. | 2.52 | Chesterfield County School District / 46,734 |
| 47. | 2.51 | Dorchester School District 4 / 17,289 |
| 47. | 2.51 | Spartanburg School District 1 / 30,439 |
| 47. | 2.51 | York School District 3 / 110,728 |
| 47. | 2.51 | Lancaster County School District / 76,652 |
| 47. | 2.51 | Laurens School District 55 / 37,250 |
| 47. | 2.51 | Marion School District 1 / 15,337 |
| 53. | 2.50 | Florence School District 1 / 96,463 |
| 53. | 2.50 | Fairfield County School District / 23,956 |
| 53. | 2.50 | Spartanburg School District 3 / 16,629 |
| 53. | 2.50 | Greenville County School District / 466,178 |
| 57. | 2.48 | Lexington School District 3 / 13,248 |
| 57. | 2.48 | Anderson School District 2 / 22,394 |
| 57. | 2.48 | Pickens County School District / 119,224 |
| 60. | 2.47 | Marion School District 2 / 11,648 |
| 60. | 2.47 | Marlboro County School District / 28,933 |
| 60. | 2.47 | Newberry County School District / 37,508 |
| 60. | 2.47 | Calhoun County School District / 15,175 |
| 64. | 2.46 | Laurens School District 56 / 20,726 |
| 64. | 2.46 | Abbeville County School District / 24,326 |
| 64. | 2.46 | Greenwood School District 52 / 7,366 |
| 64. | 2.46 | Aiken County School District / 162,758 |
| 68. | 2.45 | Allendale County School District / 10,419 |
| 68. | 2.45 | Bamberg School District 1 / 8,810 |
| 68. | 2.45 | Orangeburg School District 5 / 51,950 |
| 71. | 2.43 | Bamberg School District 2 / 7,177 |
| 71. | 2.43 | Greenwood School District 50 / 58,872 |
| 71. | 2.43 | Georgetown County School District / 60,158 |
| 74. | 2.42 | Beaufort County School District / 161,206 |
| 74. | 2.42 | Anderson School District 5 / 78,592 |
| 74. | 2.42 | Greenwood School District 51 / 6,893 |
| 77. | 2.40 | Oconee County School District / 74,273 |
| 78. | 2.39 | Barnwell School District 29 / 5,135 |
| 79. | 2.38 | Union County School District / 28,961 |
| 80. | 2.37 | Lexington School District 2 / 63,322 |
| 80. | 2.37 | Clarendon School District 1 / 8,920 |
| 80. | 2.37 | Horry County School District / 269,291 |
| 83. | 2.36 | Charleston County School District / 350,209 |
| 84. | 2.34 | Anderson School District 4 / 21,359 |
| 85. | 2.27 | Richland School District 1 / 201,528 |
| 86. | 2.26 | Spartanburg School District 7 / 52,943 |
| 87. | 2.23 | Beaufort County School District within Beaufort Marine Corps Air Station / 1,027 |
| 87. | 2.23 | Beaufort Marine Corps Air Station School District / 1,027 |
| 89. | 2.22 | McCormick County School District / 10,233 |
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.
