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  1. News & Updates

  1. Latest News from City Hall

    Read the latest news from City Hall in the week's Highlights Read More
  2. 5760 interchange

    57/60 Confluence Project Construction Updates

    Upcoming Nighttime Lane Closures Roadway Closures
  3. wsf (1)

    It's Snowing in Diamond Bar!

    Winter Snow Fest brings in tons of snow for open play areas and sledding! Read on...
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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. Dec 3

  2. Windmill Lighting

  1. Dec 5

  2. City Council Meeting

  1. Dec 9

  2. Winter Snow Fest

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