| Business | Phone |
| Boston City Clerk 1 City Hall Pz # 601, Boston 2108 | (617) 635-4600 |
| Boston City Hall Security 1 City Hall Plz, Boston 2108 | (617) 635-4444 |
| Boston Mayor's Office 1 City Hall Plz, Boston 2201 | (617) 635-4500 |
| City Hall 1 City Hall Plz # A, Boston 2201 | (617) 635-4000 |
| Old City Hall Landmark Corp 45 School St, Boston 2108 | (617) 523-8678 |
| Mayor's Office-Arts & Tourism 1 City Hall Plz # 716, Boston 2201 | (617) 635-3911 |
| Mayor's-Press Office 1 City Hall Plz, Boston 2201 | (617) 635-4461 |