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Diamond Bar Library

Library Hours

  • Monday 10 am - 8 pm
  • Tuesday 10 am - 8 pm
  • Wednesday 10 am - 8 pm
  • Thursday 10 am - 8 pm
  • Friday 10 am - 6 pm
  • Saturday 10 am - 6 pm
  • Sunday Closed

Holiday Closures

Get to Know This Library

About Diamond Bar Library

About Diamond Bar Library

  • Library Size: 18,245 sq ft
  • Space for Children
  • Book Drop
  • Space for Teens
  • Study Rooms: Capacity 4 - 6

Our Collections

Our Collections

Online Collections — Available 24 hours

Newspapers

Our Services

Our Services

Children's Services

Our Computers

Our Computers

  • Public Computers: 11
  • Children's Computers: 5
  • Teen Computers: 6
  • Laptop & Hotspot Kits: 5
  • Express Computers: 8
  • Early Learning Computers: 4

Our Community

Friends of the Library

Friends of Diamond Bar Library a volunteer-run organization that supports the library and library events

Friends of Diamond Bar Library provides the following services to support the library.

  • Friends of Diamond Bar Library Book Store

Library History

Originally opened in 1977, the Diamond Bar Library has long provided valuable services to both residents and visitors.

The Diamond Bar Library at 1061 Grand Avenue was rededicated on August 15, 1998 after renovations made possible by the City of Diamond Bar Redevelopment Agency, the County of Los Angeles, and the Diamond Bar Friends of the Library.

On July 28, 2012, the Diamond Bar Library celebrated the grand opening of the new location at 21800 Copley Drive. The new 18, 245 square foot library is located on the 1st floor of the City Hall building.

Political Representatives

Local Links

Staff Picks (All Ages)

A monthly list of noteworthy titles selected by our Collection Development Services team.

See More Booklists

LA County Naloxone clinic information

LA County Library To Host More Life-Saving Naloxone (Narcan) Clinics In Response To Fentanyl Crisis

LA County Library announces the additional naloxone (Narcan) clinics at 10 libraries through June 2024.

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LA County Public Defender Record Clearing Project

LA County Library Helps Individuals Break Barriers to Careers and Education Through Criminal Record Expungement Clinics

LA County Library announces the 3 Criminal Record Expungement Clinics

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Library happenings march 2024

Library Happenings Mar 2024

Check out what's happening at LA County Library this month. Read, celebrate, learn, enjoy!

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Lynwood renovation example

Major $8 Million Renovation to Begin for Lynwood Library

Major $8 Million Renovation to Begin for Lynwood Library. Lynwood is first of several Southeast LA libraries that Hahn’s office will help renovate.

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