Community

Strategic Plan

Learn about the City's guiding unified framework that outlines strategies and initiatives over a three-year period

Armed Forces Banners

City Government Explained

Emergency Notifications

Signup to receive emergency alerts impacting the area of Diamond Bar.

Emergency Preparedness

Information on emergency preparedness related to hazards and threats that can potentially affect the Diamond Bar community

Environmental Services

The City of Diamond Bar offers a number of specialized recycling programs in addition to its residential trash/recycling program.

Moving to Town?

The City of Diamond Bar is home to more than 58,000 people, and offers a diverse selection of housing choices for its residents. Whether you are interested in renting or buying, need an apartment or a home, you are certain to find the perfect Diamond Bar address that you can call home, too.

Our History

Read through a brief history of the City of Diamond Bar, California.

Recreation Activities

Whether you're looking for a park to have a picnic, or you want to enroll your child in a sports activity, or you want to learn a new craft hobby yourself, or are just looking for something fun to do in the community...you can find it all here!

Quick Reference - Who Do I Call?

Not sure who to contact with your question or concern? See a listing for quick reference for who to call in the city.

Suggestions, Surveys and Comments

Let us know how we're doing.

Through My Lens Photo Contest

Find eligibility information, how to enter the contest, prize specifics, and subject categories for the Through My Lens Photo Contest.

Tres Hermanos Conservation Authority

The Tres Hermanos Conservation Authority is a joint powers agency with representatives from the cities of Chino Hills, Diamond Bar, and Industry. The purpose of this Authority is to coordinate the overall conservation, maintenance and use of the property through the collaboration by its Member Agencies to protect the 2,445 Tres Hermanos Ranch.