| Business | Phone |
| City Administration 245 E Bonita Ave, San Dimas 91773 | (909) 394-6210 |
| San Dimas Engineering Dept 245 E Bonita Ave, San Dimas 91773 | (909) 394-6240 |
| San Dimas Street Maintenance 301 S Walnut Ave, San Dimas 91773 | (909) 394-6270 |
| Business Licenses Dept 245 E Bonita Ave, San Dimas 91773 | (909) 394-6220 |
| San Dimas Code Enforcement 245 E Bonita Ave, San Dimas 91773 | (909) 394-6257 |
| San Dimas Senior Citizens Center 201 E Bonita Ave, San Dimas 91773 | (909) 394-6290 |