CITY HALL
21825 Copley Drive l Diamond Bar, CA 91765
tel 909.839.7000 l fax 909.861.3117 l email info@ci.diamond-bar.ca.us
Directions
City Hall offices are located within the AQMD/Government Center Building
The city of Diamond Bar is located at the crossroads of the Pomona (SR-60) and Orange (SR-57) freeways in the eastern San Gabriel Valley of Los Angeles County.
Office Hours
Monday through Thursday l 7:30 a.m. to 5:30 p.m.
Friday l 7:30 a.m. to 4:30 p.m.
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