| Rank | Median Age ▲ | School District / Population |
| 1. | 20.70 | Fort Jackson Schools / 14,220 |
| 1. | 20.70 | Richland County School District 2 within Fort Jackson / 14,220 |
| 3. | 21.10 | Name N/A / 16,089 |
| 4. | 23.00 | Beaufort Marine Corps Air Station School District / 1,869 |
| 4. | 23.00 | Beaufort County School District within Beaufort Marine Corps Air Station / 1,869 |
| 6. | 28.70 | Clarendon School District 3 / 5,976 |
| 7. | 32.10 | Dillon School District 1 / 5,444 |
| 8. | 32.30 | Richland School District 1 / 195,966 |
| 9. | 33.00 | Sumter School District 2 / 54,577 |
| 10. | 33.40 | Bamberg School District 2 / 7,369 |
| 11. | 34.00 | Orangeburg School District 5 / 50,005 |
| 12. | 34.30 | Florence School District 3 / 20,769 |
| 12. | 34.30 | Berkeley County School District / 163,328 |
| 12. | 34.30 | Marion School District 7 / 6,140 |
| 15. | 34.50 | Spartanburg School District 6 / 59,872 |
| 16. | 34.60 | Dillon School District 2 / 18,186 |
| 17. | 34.80 | Barnwell School District 19 / 5,712 |
| 18. | 34.90 | Dorchester School District 2 / 105,973 |
| 18. | 34.90 | Charleston County School District / 345,714 |
| 20. | 35.00 | Jasper County School District / 22,250 |
| 21. | 35.10 | Pickens County School District / 116,092 |
| 22. | 35.20 | Hampton School District 2 / 7,987 |
| 22. | 35.20 | Richland School District 2 / 108,900 |
| 24. | 35.30 | York School District 3 / 108,583 |
| 25. | 35.70 | Lexington School District 4 / 16,453 |
| 26. | 35.90 | Florence School District 5 / 5,748 |
| 27. | 36.20 | Marlboro County School District / 28,571 |
| 28. | 36.40 | Lexington School District 1 / 106,932 |
| 29. | 36.60 | Cherokee County School District / 52,016 |
| 30. | 36.70 | Greenville County School District / 444,979 |
| 31. | 36.80 | Florence School District 4 / 6,749 |
| 31. | 36.80 | Greenwood School District 50 / 57,633 |
| 33. | 37.00 | Marion School District 1 / 16,105 |
| 33. | 37.00 | Lexington School District 2 / 61,390 |
| 33. | 37.00 | Allendale County School District / 10,459 |
| 36. | 37.10 | York School District 1 / 30,491 |
| 37. | 37.20 | Sumter School District 17 / 49,864 |
| 38. | 37.30 | Anderson School District 1 / 47,632 |
| 38. | 37.30 | Lexington School District 5 / 88,313 |
| 40. | 37.40 | Florence School District 1 / 92,226 |
| 41. | 37.60 | Spartanburg School District 5 / 38,566 |
| 42. | 37.70 | Lee County School District / 20,074 |
| 43. | 37.80 | Spartanburg School District 2 / 51,997 |
| 43. | 37.80 | Barnwell School District 45 / 12,032 |
| 45. | 37.90 | Orangeburg School District 4 / 20,741 |
| 46. | 38.10 | Anderson School District 3 / 14,288 |
| 46. | 38.10 | Lancaster County School District / 73,725 |
| 46. | 38.10 | Spartanburg School District 4 / 17,079 |
| 49. | 38.20 | Hampton School District 1 / 13,010 |
| 49. | 38.20 | York School District 4 / 38,688 |
| 49. | 38.20 | Spartanburg School District 7 / 54,475 |
| 52. | 38.40 | Anderson School District 5 / 75,620 |
| 52. | 38.40 | York School District 2 / 31,589 |
| 54. | 38.50 | Newberry County School District / 37,992 |
| 54. | 38.50 | Edgefield County School District / 25,469 |
| 54. | 38.50 | Darlington County School District / 66,771 |
| 54. | 38.50 | Colleton County School District / 39,128 |
| 58. | 38.60 | Name N/A / 28 |
| 58. | 38.60 | Chesterfield County School District / 42,876 |
| 60. | 38.90 | Greenwood School District 51 / 7,900 |
| 61. | 39.10 | Williamsburg County School District / 34,920 |
| 62. | 39.20 | Saluda County School District / 13,931 |
| 62. | 39.20 | Clarendon School District 2 / 17,759 |
| 64. | 39.30 | Chester County School District / 32,666 |
| 65. | 39.40 | Aiken County School District / 155,496 |
| 66. | 39.80 | Marion School District 2 / 11,778 |
| 66. | 39.80 | Kershaw County School District / 58,176 |
| 68. | 40.00 | Laurens School District 55 / 39,947 |
| 69. | 40.10 | Dorchester School District 4 / 16,469 |
| 69. | 40.10 | Laurens School District 56 / 20,892 |
| 71. | 40.20 | Beaufort County School District / 145,930 |
| 72. | 40.30 | Abbeville County School District / 23,958 |
| 72. | 40.30 | Spartanburg School District 1 / 30,279 |
| 74. | 40.40 | Barnwell School District 29 / 5,142 |
| 75. | 40.50 | Florence School District 2 / 6,661 |
| 76. | 40.70 | Fairfield County School District / 23,482 |
| 77. | 41.00 | Horry County School District / 248,601 |
| 78. | 41.10 | Spartanburg School District 3 / 17,604 |
| 79. | 41.30 | Union County School District / 27,800 |
| 80. | 41.60 | Anderson School District 4 / 20,359 |
| 80. | 41.60 | Bamberg School District 1 / 8,015 |
| 82. | 41.70 | Lexington School District 3 / 13,485 |
| 83. | 41.80 | Dillon School District 3 / 7,147 |
| 84. | 42.00 | Anderson School District 2 / 22,327 |
| 85. | 42.40 | Oconee County School District / 70,507 |
| 86. | 42.70 | Greenwood School District 52 / 7,158 |
| 87. | 43.10 | Georgetown County School District / 60,235 |
| 88. | 43.20 | Orangeburg School District 3 / 19,641 |
| 89. | 44.20 | Calhoun County School District / 14,746 |
| 90. | 48.10 | McCormick County School District / 10,087 |
| 91. | 48.30 | Clarendon School District 1 / 9,128 |
Please note that we only rank locations with 'Median Age' data. The rank above might not be a complete list. Locations without 'Median Age' 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.
