Ariana G.
11/6/2025
really good library, too far away from my house though, but great library, very kind and respectful staff, very quiet and clean.
LA County Library - Diamond Bar Library
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21800 Copley Dr
Diamond Bar, CA 91765
The LA County Library - Diamond Bar Library is a community library located in Diamond Bar, CA, offering a wide range of books, periodicals, and digital resources for patrons of all ages.
With a focus on promoting literacy and lifelong learning, this library provides a welcoming space for individuals to explore literature, engage in educational programs, and connect with fellow community members.
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Reviews
3.589 reviewsKelin L.
12/14/2025
I actually like Diamond Bar library. But I just had very bad experience yesterday. The library closed at 6. There was a very rude female staff member who said like a boss , "I need you to leave...
Mitch W.
3/27/2025
Wonderful local library. It's on the ground floor of the building that also houses the Diamond Bar city services. We came to his LA County Library to get my 5.5 year old son a library card!...
Vince A.
8/25/2024
Local library for my family. It's not the biggest but it has all the amenities that a public library should carry. The facility is fairly new (around 15 years old) located in the same building as...
Janey Y.
2/11/2023
3.5 stars! I like that the facilities are relatively new and there are plenty of seats even on a Saturday morning. Similar to all LA County libraries, it is still a bit small which is normal for...
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