| Business | Phone |
| Calhoun County Addressing Unit 102 Courthouse Dr # 112, St Matthews 29135 | (803) 874-2679 |
| Calhoun County Adm 102 Courthouse Dr # 108, St Matthews 29135 | (803) 874-2435 |
| Calhoun County Animal Control 140 Purple Martin Dr, St Matthews 29135 | (803) 874-2914 |
| Calhoun County Bldg Inspector 102 Courthouse Dr # 112, St Matthews 29135 | (803) 874-4201 |
| Calhoun County Camp Site St Matthews 29135 | (803) 874-3036 |
| Calhoun County Collection Center Bellville, St Matthews 29135 | (803) 874-1032 |
| Calhoun County Collection Center Kennerly Rd, St Matthews 29135 | (803) 874-4910 |
| Calhoun County Collection Center Riley Rd, St Matthews 29135 | (803) 874-4909 |
| Calhoun County Coroner 120 Mill St, St Matthews 29135 | (803) 655-5636 |
| Calhoun County Emergency Prepr 201 Mill St, St Matthews 29135 | (803) 874-3042 |
| Calhoun County Emergency Prepr 302 S F R Huff Dr # 101, St Matthews 29135 | (803) 874-3042 |
| Calhoun County Ems 201 Mill St, St Matthews 29135 | (803) 874-3561 |
| Calhoun County Extension Svc 902 F R Huff Dr # 112, St Matthews 29135 | (803) 874-2354 |
| Calhoun County Land Fill 2240 Purple Martin Rd, St Matthews 29135 | (803) 874-2192 |
| Calhoun County Legislative 102 Courthouse Dr, St Matthews 29135 | (803) 655-7718 |
| Calhoun County Road Mntnc Shop Doodle Hill Rd, St Matthews 29135 | (803) 874-3036 |
| Calhoun Development Commission 114 Courthouse Dr, St Matthews 29135 | (803) 655-5650 |
| Honorable Bob Lake 1623 Bridge St, St Matthews 29135 | (803) 874-1112 |
| Honorable Bob Lake 242 W Bridge St, St Matthews 29135 | (803) 874-1112 |
| Voter Registration Office 102 Courthouse Dr # 113, St Matthews 29135 | (803) 874-2929 |