Form Submission Confirmation
By signing in or creating an account, some fields will auto-populate with your information and your submitted forms will be saved and accessible to you.

Environmental Services

  1. Smart Gardening Workshop at Earth Day Celebration

    Discussion includes backyard and worm composting, water-wise gardening, and grasscyling.

Healthy Diamond Bar

  1. DB Day of Service 2019 Volunteer Application

    Event takes place on May 18, 2019. Submission deadline: April 15, 2019.

Neighborhood Traffic Management

  1. Castle Rock Road NTMP Survey

    In order to proceed with the implementation of the traffic calming measures, a minimum of 67% of the neighborhood residents must... More…

Public Information

  1. Rate Diamond Bar Connection Newsletter

    The City's official monthly newsletter.

  1. Website Feedback Survey

    Help us improve our website by letting us know what you like and what we can improve. Thank you for your time!

Public Safety

  1. Ask A Deputy

    Submit your public safety-related questions, concerns, or comments

  2. Start a Neighborhood or Business Watch

    Learn how to start a Watch in your area.

  1. Emergency Alert Sign Up

    Receive notification by email, voice or text in the event of a disaster or significant event in Diamond Bar.

Special Events

  1. Winter Snow Fest Event Survey

    Your feedback is important to us. Let us know what went well and what needs improvement. Thank you for your time!

Take a Survey

  1. How Are We Doing?
  2. Website Feedback Survey

    Help us improve our website by letting us know what you like and what we can improve. Thank you for your time!

  1. Update Your Information: Non-Profit / Community Service Organization