| Department Name | Zip+4 |
| ACADEMIC AFFAIRS (ASSOCIATE VP) | 6462 |
| ACADEMIC AFFAIRS (PROVOST) | 6100 |
| ACADEMIC ENRICHMENT (OASIS) | 6585 |
| ACCOUNTS PAYABLE | 6110 |
| ADMISSIONS | 6120 |
| AEROSPACE STUDIES/AIR FORCE | 0150 |
| AFRICAN AMERICAN STUDIES | 6280 |
| ALUMNI AFFAIRS & PUBLICATIONS | 6130 |
| ARAMARK | 0065 |
| ARCHIVES & MUSEUM (LIBRARY) | 6141 |
| ARMY/MILITARY SCIENCE | 0050 |
| ASSOCIATE VP - ACADEMIC AFFAIRS | 6462 |
| ATHLETICS | 6150 |
| AUXILIARY SERVICES | 6160 |
| BAND / MUSIC | 0026 |
| BIOLOGY | 6170 |
| BRIGADIER FOUNDATION | 6180 |
| BUDGET OFFICE | 6111 |
| BUSINESS ADMINISTRATION, SCHOOL OF | 6190 |
| C.A.C./ COMMUNICATION ACROSS CURRICLM | 6340 |
| CADET ACTIVITIES | 0130 |
| CADET STORE | 6200 |
| CAREER SERVICES (PLACEMENT) | 6210 |
| CENTER FOR ACADEMIC ENRICHMENT | 6585 |
| C.I.R.D./CNTR FOR INTERNATNL & REG. DEV. | 0153 |
| CHEMISTRY | 6220 |
| CITADEL BRIGADIER FOUNDATION | 6180 |
| CITADEL FOUNDATION/ TCF | 6230 |
| CIVIL & ENVIRONMENTAL ENGINEERING | 6240 |
| C.G.P.S./ CLGE OF GRAD. & PROF. STUDIES | 6250 |
| COMMANDANT OF CADETS | 0090 |
| COMPTROLLER (ACCTS. PAYABLE) | 6112 |
| CONSTRUCTION MANAGEMENT | 6261 |
| COUNSELING CENTER | 6270 |
| EDUCATION, SCHOOL OF | 6300 |
| ELECTRICAL & COMPUTER ENGINEERING | 6305 |
| ENGINEERING, SCHOOL OF | 6241 |
| ENGLISH | 6310 |
| FACILITIES & ENGINEERING (PPLT) | 6262 |
| FINANCE & BUSINESS AFFAIRS (VP FINANCE) | 6320 |
| FINANCIAL AID | 6330 |
| FINANCIAL SERVICES (ACCTS. PAYABLE) | 6110 |
| GIFT SHOP | 0110 |
| GOVERNMENTAL & COMMUNITY AFFAIRS | 6341 |
| H.E.S.S./ HEALTH, EXRCISE & SPRTS SCIENCE | 6350 |
| HISTORY | 6360 |
| HONORS PROGRAM | 6370 |
| HUMAN RESOURCES | 6380 |
| HUMANITIES & SOCIAL SCIENCES, DEAN | 6515 |
| INFIRMARY | 6390 |
| INFORMATION TECHNOLOGY SERVICES/ ITS | 6400 |
| INTERNAL AUDITOR | 6162 |
| INTERNATIONAL STUDIES | 6295 |
| INSTITUTIONAL RESEARCH | 6461 |
| LAUNDRY / DRY CLEANING | 6410 |
| LIBRARY | 6140 |
| MATH & COMPUTER SCIENCE | 6420 |
| MILITARY SCIENCE (ARMY) | 0050 |
| MODERN LANGUAGES | 6430 |
| MULTICULTURAL STUDENT SERVICES | 6295 |
| MULTI-MEDIA SERVICES | 6401 |
| NAVAL SCIENCE (NAVY) | 0070 |
| O.A.S.I.S. | 6585 |
| O.I.R./ C.I.O | 6440 |
| PHOTOGRAPHER | 0156 |
| PHYSICAL PLANT (PPLT) | 6260 |
| PHYSICS | 6450 |
| PLACEMENT | 6211 |
| PLANNING & ASSESSMENT | 6460 |
| POLITICAL SCIENCE / CRIMINAL JUSTICE | 6470 |
| POST OFFICE | 6600 |
| PRESIDENT | 6480 |
| PRESIDENT EMERITUS (PLACEMENT) | 6212 |
| PRESIDENT'S SUPPORT OFFICE | 6482 |
| PRINT SHOP | 6490 |
| PROCUREMENT SERVICES | 6500 |
| PROTOCOL | 6481 |
| PROVOST | 6100 |
| PSYCHOLOGY | 6510 |
| PUBLIC AFFAIRS | 6520 |
| PUBLIC SAFETY | 6530 |
| RECORDS MANAGEMENT | 6540 |
| REGISTRAR | 6550 |
| RELIGIOUS ACTIVITIES (3) | |
| CHAPLAIN | 0002 |
| ST. ALBANS | 0003 |
| CATHOLIC CHURCH | 0058 |
| RISK MANAGEMENT | 6263 |
| SC ARMY NATIONAL GUARD | 0097 |
| SC POLICE CORPS | 0067 |
| SCIENCE & MATHMATICS, SCHOOL OF | 6420 |
| SOUTHEAST SERVICE CORPORATION | 0027 |
| SPECIAL SERVICES | 6581 |
| STAFF COUNCIL | 0088 |
| SUMMER CAMP | 0053 |
| TAILOR SHOP | 6560 |
| TELECOMMUNICATIONS | 6161 |
| TREASURER | 6570 |
| VP ACADEMIC AFFAIRS | 6100 |
| VP COMMUNICATIONS | 6520 |
| VP FACILITIES & ENGINEERING | 6262 |
| VP FINANCE | 6320 |
| WOMEN OF THE CITADEL | 0047 |
| WRITING AND LEARNING CENTER | 6580 |
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