| Business | Phone |
| Frederick Mayor's Office 101 N Court St, Frederick 21701 | (301) 694-1380 |
| Mayor's Office-Adm Assistant 101 N Court St, Frederick 21701 | (301) 694-1184 |
| Mayor's Office-Board-Alderman 101 N Court St, Frederick 21701 | (301) 694-1382 |
| Mayor's Office-Legislative 101 N Court St, Frederick 21701 | (301) 694-2575 |
| Mayor's Office-Secretary 101 N Court St, Frederick 21701 | (301) 694-1384 |