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  1. Appointments can take place through a phone call, over video, or in person.

    Service on your time, your way... Make an Appointment!

    Appointments can take place through a phone call, over video, or in person.
  2. Sky view of the city

    Diamond Bar History

    The city's recorded history began with a Mexican land grant...
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  1. Diamond Bar Center
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  1. News & Updates

  1. Concerts

    Concerts and Movies are Back!

    The popular summer series takes place on Wednesdays from June 14 through August 2 at Summitridge Park Event Lineup
  2. bus shelters (3)

    New Bus Shelters

    Installation started May 1 and will be finished by June 30 Read More
  3. hiring

    Join the DB Team

    Apply online for part-time and full-time positions Apply Now
  4. Report a Concern highlight (1)

    Report Issues Online

    Easily report graffiti, illegal dumping, and roadway or sidewalk issues Report Now
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  1. Business of the Month Highlight

    Business of the Month Awards

    Support small businesses by shopping local!
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  1. Events & Highlights

  1. Jun 3

  2. Healthy DB - Serving Up Pickleball

    Learn the fastest-growing sport in America!
  1. Jun 6

  2. City Council Meeting

  1. Jun 8

  2. Town Center Specific Plan Update Meeting

View All Events
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Contact Us

  1. City of Diamond Bar
    21810 Copley Drive
    Diamond Bar California 91765
    Phone: 909-839-7000
    E-mail
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Office Hours:

  1. Monday - Thursday
    7:30 a.m. - 5:30 p.m.
    Friday
    7:30 a.m. - 4:30 p.m.

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