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City Hall
21810 Copley Drive Diamond Bar CA 91765
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Physical Address:
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21810 Copley Drive
Diamond Bar, CA 91765
Mailing Address:
21810 Copley Drive
Diamond Bar, CA 91765
Phone:
(909) 839-7000
Hours
Monday - Thursday
7:30 a.m. - 5:30 p.m.
Fridays
7:30 a.m. - 4:30 p.m.
Field / Weather Hotline
Phone:
(909) 348-8310
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