| Department | Address | Telephone |
| City Hall | 73 Harlow St. | 945-4400 |
| Bangor International Airport | Godfrey Boulevard | 947-0384 |
| Animal Control | 541 Maine Ave. | 947-3205 |
| Bus system (The BAT) | 481 Maine Ave. | 947-0536 |
| Economic Development | 73 Harlow St. | 945-4400 |
| Fire Department: Report a fire | 942-8211 | |
| Fire Department: Emergency | 911 | |
| Fire Department: General calls | 285 Main St. | 942-6335 |
| Harbor Master | 64 Front St. | 947-5251 |
| Health and Welfare: General Assistance | 103 Texas Ave. | 941-0257 |
| Health and Welfare: Public Health Nursing | 103 Texas Ave. | 941-0258 |
| Health and Welfare: Children's Dental Clinic | 103 Texas Ave. | 941-0256 |
| Library | 145 Harlow St. | 947-8336 |
| Motor Pool | 481 Maine Ave. | 945-6905 |
| Nursing Facility | 103 Texas Ave. | 947-4557 |
| Parks and Recreation | 647 Main St. | 947-1018 |
| Parks and Recreation: Maintenance | 647 Main St. | 947-5655 |
| Parks and Recreation: Municipal Parks | 647 Main St. | 947-5655 |
| Municipal Golf Course | 280 Webster Ave. | 941-0232 |
| Police Department: Emergency | 911 | |
| Police Department: General calls | 35 Court St. | 947-7384 |
| Police Department: Detective Division | 35 Court St. | 947-2254 |
| Police Department: Parking Enforcement | 35 Court St. | 947-7397 |
| Police Department: Records Division | 35 Court St. | 947-7398 |
| Public Works | 530 Maine Ave. | 942-0220 |
| Public Works: Electrical Division | 530 Maine Ave. | 942-8629 |
| School Department: Adult Education | 885 Broadway | 941-6310 |
| School Department: Adult Learning Center | 121 York St. | 941-6315 |
| School Department: Assistant superintendent | 73 Harlow St. | 945-4400 |
| School Department: Business Office | 73 Harlow St. | 945-4400 |
| School Department: Food Service Supervisor | 73 Harlow St. | 945-4400 |
| School Department: Gifted and Talented Office | 73 Harlow St. | 945-4400 |
| School Department: Maintenance | 35 Court St. | 941-6336 |
| School Department: Pupil Services Assistant Director | 143 Fifth St. | 941-6250 |
| School Department: Pupil Services Director | 73 Harlow St. | 945-4400 |
| School Department: Regional Hearing Impaired Program | 100 Moosehead Blvd. | 941-6255 |
| School Department: Regional Multiple Handicapped Program | 885 Broadway | 941-6215 |
| School Department: Regional Multiple Handicapped Program | 304 Garland St. | 990-2441 |
| School Department: School bus dispatcher | 1246 Ohio St. | 942-3354 |
| School Department: Superintendent | 73 Harlow St. | 945-4400 |
| Schools: Abraham Lincoln School | 45 Forest Ave. | 941-6280 |
| Schools: Bangor High School | 885 Broadway | 941-6200 |
| Schools: Bangor High School Guidance Office | 885 Broadway | 941-6217 |
| Schools: Downeast School | 100 Moosehead Blvd. | 941-6240 |
| Schools: Fairmount School | 58 Thirteenth St. | 941-6260 |
| Schools: James F. Doughty School | 143 Fifth St. | 941-6220 |
| Schools: Fourteenth Street School | Fourteenth Street | 941-6350 |
| Schools: Fruit Street School | 175 Fruit St. | 941-6270 |
| Schools: Mary Snow School | 435 Broadway | 941-6290 |
| Schools: Vine Street School | 66 Vine St. | 941-6300 |
| Schools: William S. Cohen School | 304 Garland St. | 941-6230 |
| Voter Registration | 73 Harlow St. | 945-4400 |
| Wastewater Treatment Plant | Main Street | 942-4111 |