How do I register for recreation classes and activities?

There are multiple ways to register for recreation classes, activities or programs. The easiest and most convenient way is online at

You can also register in person at the Diamond Bar Center, located at 1600 Grand Avenue, during regular business hours of Monday through Thursday 7:30 a.m. to 5:30 p.m. or Friday 7:30 a.m. to 4:30 p.m. Walk-ins are welcome, but appointments are recommended and can be made online at

Alternatively, you can complete the registration form and return it by mail to City of Diamond Bar, Attn: Recreation Department, 21810 Copley Drive, Diamond Bar, CA 91765, or stop by the Diamond Bar Center, 1600 Grand Avenue, any time between a.m. to noon Monday-Saturday and deposit your completed registration form in a drop box located near the front entrance. 

If mailing or dropping off your registration form, be sure to include payment (personal check, cashier’s check or money order made payable to City of Diamond Bar) and release of liability waiver. 

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1. How do I register for recreation classes and activities?
2. What time do the tennis court lights come on?