Walnut / Diamond Bar Sheriff’s Station

This is the station most families in Rowland Heights end up dealing with, and almost none of them expect it. Rowland Heights borders Hacienda Heights, the two are constantly assumed to be handled together, and they are not — which is why people lose hours driving to the wrong building.

Station details

Details above are published by the Los Angeles County Sheriff’s Department. Arrangements change; call us and we will confirm where the person actually is before you drive anywhere.

Communities this station covers

The Sheriff lists this station as serving:

• City of Walnut and Walnut area arrests.
• City of Diamond Bar.
• Rowland Heights — unincorporated Los Angeles County, with no city police department of its own.
• Unincorporated areas of Covina Hill and West Covina. See also West Covina bail bonds.

What happens after booking

A Sheriff’s station is not a long-term jail. It has holding cells and people are processed there, but it is a way station rather than a destination.

1. Transport and intake. The person is brought in, searched, and property is inventoried.
2. Booking. Identity, charges, fingerprints, photographs. Until booking finishes, records often show nothing — which is why families calling in the first hour are told “no record found” and panic. It is normal.
3. The charge is set. This determines the scheduled bail figure, and it is not always the charge described at the scene.
4. Release, or transfer. If a bond is posted while the person is still at the station, release can happen from there. Otherwise they move into the county system.

Transfers, and why the timing matters

If no bond is posted at the station, men are generally transferred into county custody through the Inmate Reception Center in downtown Los Angeles, and women through the Century Regional Detention Facility in Lynwood.

That transfer is the single most important timing fact here. Once it starts, the release clock effectively restarts inside a far larger and busier facility. We will not promise you a release time — once a bond is posted the remaining wait is the facility’s own processing queue, and a quiet weekday morning is nothing like a Saturday night. What we can say is that the window while someone is still at the station is usually the fastest point to act, and it is often short.

Do not assume a bond is needed

Since 1 October 2023, the Superior Court’s Pre-Arraignment Release Protocols mean many people arrested in Los Angeles County for non-violent, non-serious offenses are released without money bail, through citation or magistrate review rather than a bond. That applies here.

It does not apply to everything, and domestic violence is a significant exception. The honest first step is finding out what the booking charge actually is rather than assuming you need to raise money. If a bond is not required, we will tell you so.

Domestic violence arrests handled here

Domestic violence is where the rules change most. Under Penal Code § 1270.1, these offenses require a hearing in open court before release on own recognizance or at any amount other than the published scheduled figure — a statewide rule.

In practice: posting the scheduled amount does not need a judge and can happen at any hour. Asking for a reduced amount does need a judge and waits for a court day, so a Friday evening arrest can stall into the weekend. Our domestic violence bail page sets out the scheduled amounts by charge and the protective order that begins at release. Charge detail is on PC 273.5, PC 243(e)(1) and PC 273.6.

Warrants, felonies and misdemeanors

• Warrants and failures to appear. Arranging the bond before surrendering is almost always the better order of operations.
• Felony bail, including PC 1275.1 source-of-funds reviews on larger bonds.
• Misdemeanor bail, where the release protocols above most often apply.
• DUI and drug charges.

What we need from you to start

• The full name of the person arrested, and date of birth if you have it.
• Roughly where the arrest happened — a street or cross streets is enough for us to confirm the station.
• The booking charge if you were told it. If not, we will find it.
• Details for whoever will sign as indemnitor — identification and something showing stable local ties.

Nights, weekends and holidays

Arrests cluster in the evenings and at weekends, exactly when courts are closed. Our three offices are open 24 hours a day, every day of the year, and a licensed agent answers the phone at 3am on a holiday.

Common questions

Can bail be posted at the station itself?

Often yes, while the person is still held there, and that is usually the fastest outcome. Once a transfer into county custody has begun, the process moves to the receiving facility. Call and we will confirm which applies.

There is no record of the person. What does that mean?

Usually booking has not finished. Records typically appear only once booking is complete, which can take a few hours. It is normal.

How long does release take?

We will not give a number we cannot stand behind. After a bond is posted the remaining time is the facility’s processing queue. Posting earlier means a shorter queue.

Is Hacienda Heights handled at this station?

No. Hacienda Heights is policed from the Sheriff’s Industry Station, despite bordering Rowland Heights. This is the single most common confusion in this area.

Does Rowland Heights have its own police department?

No. Rowland Heights is an unincorporated community of Los Angeles County, so there is no Rowland Heights Police Department — policing comes from this Sheriff’s station.

Where we work from

Our nearest 24-hour offices are Brea and La Habra, with Anaheim behind them. We serve Rowland Heights, Diamond Bar, Walnut and Hacienda Heights, and post bail across Los Angeles County and Orange County. Other facilities are listed under jails and courts.