| Chamber of Commerce: | Detroit Regional Chamber |
| Electric Company: | Detroit Edison 1.800.477.4747 |
| Gas Company: | MichCon 1.800.289.0600 |
| Telephone Company: | SBC 1.800.723.9592 |
| Cable Company: | Comcast 1.800.CABLE.ME |
| Post Office: | Detroit U.S. Post Office; 10721 East Jefferson Avenue; Detroit; MI 48214-9998; (800) ASK-USPS |
| Secretary of State: | Secretary of State - Detroit Branch; 550 Washington Blvd; Detroit; MI 48226; (313) 541-5454 |
| Elementary Schools: | Contact the Detroit Public School System
for further informaton 313.494.1000 |
| Middle Schools: | Contact the Detroit Public School System
for further informaton 313.494.1000 |
| High Schools: | Contact the Detroit Public School System
for further informaton 313.494.1000 |