| Business | Phone |
| Montclair City Clerk 5111 Benito St, Montclair 91763 | (909) 625-9415 |
| Montclair City Hall 5111 Benito St, Montclair 91763 | (909) 626-8571 |
| Montclair City Manager 5111 Benito St, Montclair 91763 | (909) 625-9402 |
| Montclair City Mayor 5111 Benito St, Montclair 91763 | (909) 625-9400 |