The Walnut-Diamond Bar station contracts with the cities of Diamond Bar and Walnut, and the unincorporated area of Rowland Heights.

Walnut-Diamond Bar Sheriff’s Station

21695 Valley Blvd.
Walnut, CA 91789
Station Phone: (626) 913-1715 or
Jail Info: (909) 595-2264
24 Hour, Toll Free Walnut/Diamond Bar Bail Bonds Info: (877) 422-4591
Walnut/Diamond Bar Inmate Information 

The Walnut/Diamond Bar Sheriff Station is spread out over 45.2 miles, encompassing the contract cities of Diamond Bar and Walnut, and the unincorporated area of Rowland Heights. The station provides police services, including all patrol, investigative and custodial operations, to more than 148,000 residents.

The Walnut-Diamond Bar Station is a small but very busy jail. If this jail is too busy or overcrowded, men may be transferred to the Inmate Reception Center at Twin Towers in downtown Los Angeles.

If the arrestee is a woman, she could be transported to the female-only Los Angeles County Lynwood Jail, otherwise known as CRDF.

We recommend working on posting a bond for them while they are at the smaller Walnut facililty to hasten the process. If they are transferred to the larger facilities, it can delay their release up to 24 hours.
Cost of a Bail Bond

In California, the cost of a bail bond is set at 10% of the total bail amount. So, if the total amount of bail is $15,000, then the cost of a bail bond will be $1,500. The bail premium is always non-refundable once the defendant has been released.

Read more about paying for a bail bond.

Call a caring, licensed professional for all of your bail needs for the Walnut-Diamond Bar Jail at toll-free 877-422-4591. We’ll work quickly to answer your questions professionally and confidentially.