This Is a Private Reference, Not a Custodian. Diamond Bar Residents Directory cannot pull a file, certify a copy, confirm a household, or edit a roll. For an emergency call 911. If someone is being stalked or harassed, contact local law enforcement.
Choose the Right Records Route
Use the page that matches the record question in Diamond Bar:
- A street or parcel: start with the Diamond Bar street directory
- Older volumes and past households: open the Diamond Bar city directory collections
- One person or a name match: use the Diamond Bar resident lookup
- A postal boundary: compare the Diamond Bar ZIP code directory
- A block around an address: use the Diamond Bar neighbors parcel method
- A missing municipal file: send a request under the California Public Records Act to the department named in the record route
Diamond Bar City Clerk's Office
21810 Copley Drive, Diamond Bar, CA 91765
(909) 839-7010
Monday through Thursday, 7:30 a.m. to 5:30 p.m.; Friday, 7:30 a.m. to 4:30 p.m.
City Clerk information and online public-records request route
The City Clerk handles city records, transparency, elections, and meeting links. The city states that a CPRA submission has no filing fee, although physical duplication may be charged, and that it will determine within 10 calendar days whether responsive disclosable records exist. County deeds and vital records belong with the Los Angeles County Registrar-Recorder/County Clerk, not City Hall.