The South Carolina State Library is located at 1500 Senate Street at the corner of Senate and Bull Streets in Columbia, South Carolina. Hours: Monday through Friday from 8:30 a.m. to 5 p.m. Mailing address: P.O. Box 11469, Columbia, South Carolina 29211. Telephone: (803) 734-8666. The South Carolina State Library supports and inspires a thriving statewide community of learners committed to making South Carolina’s future brighter.