| Phone Number | Fax Number | Department | Campus |
| 480-988-8118 | | Admissions and Records | Williams |
| 480-988-8180 | | Advisement | Williams |
| 480-988-8103 | 480-988-8129 | Aviation | Williams |
| 480-988-8121 | | Aviation Tool Room | Williams |
| 480-988-8106 | | Bookstore (Bridget Hall) | Williams |
| 480-988-8107 | | Business Services | Williams |
| 480-988-8273 | | Cafeteria (Supervisor, Michelle Wattis) (Bridget Hall) | Williams |
| 480-988-8117 | | CGCC/UND Flight Training Center | Williams |
| 480-988-8279 | | Computer Lab (Bridget Hall) | Williams |
| 480-988-8101 | | Coordinator, EMT | Williams |
| 480-988-8266 | | Coordinator, Fire Science | Williams |
| 480-988-8132 | | Credit Card Payments | Williams |
| 480-988-8255 | | Electric Utility Technology (EUT) | Williams |
| 480-988-8131 | 480-988-8155 | Facilities Services | Williams |
| 480-988-8135 | 480-988-8130 | Financial Aid | Williams |
| 480-988-8755 | | Fire Science and EMT Office | Williams |
| 480-988-8123 | 480-988-8141 | Fiscal Office | Williams |
| 480-988-8400 | | Fitness/Recreation Center/Gym, Physical Education Center (PEC) | Williams |
| 480-727-1700 | | Housing Office | Williams |
| 480-988-8755 | | Law Enforcement Training Academy (LETA) | Williams |
| 480-732-7231 | | Learning Center/Tutoring Center (Bridget Hall) | Williams |
| 480-988-8611 | | Library Circulation Desk (Bridget Hall) | Williams |
| 480-988-8275 | | Library Reference Desk (Bridget Hall) | Williams |
| 480-988-8501 | | Mortuary Science Building | Williams |
| 480-988-8880 | | Nursing Advisor | Williams |
| 480-988-8881 | 480-988-8555 | Nursing and Health Sciences Divison | Williams |
| 480-988-8400 | | Physical Education Center (PEC) | Williams |
| 480-988-8601 | 480-988-8900 | Provost Office | Williams |
| 480-988-8888 | 480-988-8425 | Public Safety - Williams | Williams |
| 480-988-8145 | | Receiving | Williams |
| 480-988-8801 | | Science Lab Technician | Williams |
| 480-988-8525 | | Student Life (Bridget Hall) | Williams |
| 480-988-8000 | 480-988-8993 | Student Services | Williams |
| 480-988-8117 | | University of North Dakota (UND) | Williams |
| 480-731-8866 | | Voice Mail | Williams |