| Business | Phone |
| Adult Education Ged High Schl 10984 Ellenton St, Barnwell 29812 | (803) 541-6021 |
| Barnwell Elementary School 734 Hagood Ave, Barnwell 29812 | (803) 541-1321 |
| Barnwell High School 474 Jackson St, Barnwell 29812 | (803) 541-1390 |
| Barnwell Public Schools Supt 660 Hagood Ave, Barnwell 29812 | (803) 541-1300 |
| Guinyard-Butler Middle School 779 Allen St, Barnwell 29812 | (803) 541-1370 |