SPOKE ARTICLE - State Inmate Locator series - CALIFORNIA

How to Find an Inmate in California

If someone you love was just arrested or sent to prison in California, the first thing you need is also the hardest to get: a straight answer about where they are. California runs the largest corrections system in the country, and it does not have one single database that lists everyone in custody. The person you are looking for could be in a county jail, a state prison, a federal facility, or immigration detention, and each of those is searched a different way. California also has a few features that set it apart, including the largest jail system in the United States in Los Angeles County, a law that sends some people with felony sentences to county jail instead of state prison, and free phone calls from state prisons. This guide walks you through all of it.

Start here: figure out which system is holding them

Before you search anything, answer one question, because it tells you which tool to use.

How long ago were they taken into custody, and what happened? Someone arrested in the last few days is almost always in the county jail for the county where the arrest happened. They stay there through booking, first appearance, and often through their case if it is a local matter. People do not go to "state prison" when they are arrested; they go only after sentencing and transfer.

California adds one wrinkle here that most states do not have. Under a 2011 law known as realignment (often called AB 109), many people convicted of lower-level, nonviolent felonies serve their sentences in county jail rather than state prison. So in California, "sentenced to a felony" does not always mean "in state prison." A person can be doing felony time in a county jail. If someone was sentenced but you cannot find them in the state system, the county jail is the next place to look, not a sign that something is wrong.

So the rule of thumb: recently arrested, awaiting trial, or serving a realignment sentence: county jail. Sentenced to state prison and transferred: the California Department of Corrections and Rehabilitation. Federal charge: the federal system. Immigration hold: ICE.

Los Angeles County and the big county jails

More people are searched for in Los Angeles County than anywhere else in California, because the Los Angeles County Sheriff's Department runs the largest jail system in the United States, including facilities such as Men's Central Jail, the Twin Towers Correctional Facility, and the Century Regional Detention Facility. If your person was arrested anywhere in LA County, start with the Sheriff's Department inmate information search rather than the state prison system. You generally need the full name, and a booking number finds the record immediately.

If the arrest happened elsewhere, find that county's jail instead. California has 58 counties, and the next largest jail systems after Los Angeles are San Diego, Orange, Riverside, San Bernardino, Santa Clara, Sacramento, and Alameda. Each county runs its own roster, so you search the one where the arrest happened, or reach the specific facility through its page on InmateAid.

Searching the California state prison system (CDCR)

The state prison system is the California Department of Corrections and Rehabilitation, or CDCR. It holds people serving state prison sentences. Its public inmate locator lets you look up a person by name or by their CDCR number (the state inmate identification number) and returns their current institution and basic custody information. To search you generally need the person's first and last name, and the CDCR number narrows it when the name is common.

Remember the realignment point above: if your person was convicted of a lower-level felony, they may be serving the sentence in a county jail and will not appear in the CDCR locator at all. That is a feature of California law, not a missing record.

Federal inmates in California (BOP)

If the charge was federal, the person is in the custody of the federal Bureau of Prisons, not the state, and you search the BOP's own national inmate locator rather than any California tool. It covers everyone in federal custody from 1982 to the present and searches by name or by federal register number.

California holds a large number of federal facilities, including the Lompoc complex on the central coast, FCI Terminal Island near Long Beach, the Victorville complex in the high desert, USP Atwater in the Central Valley, and detention centers in downtown Los Angeles and San Diego that hold people whose federal cases are still pending. A person arrested on a federal charge may first sit in a county jail under a federal contract before being moved, so if the BOP locator does not show them yet, check the county jail where the arrest happened.

ICE detainees in California

ICE detainees are not criminals serving sentences; they are held in civil custody while their immigration cases are decided. California has a complicated immigration-detention landscape, because the state has tried to limit privately operated detention while ICE has continued to use several large facilities, mostly run by private contractors, in places such as Adelanto, Otay Mesa near San Diego, and the Central Valley. Detainees are frequently transferred between these facilities and to other states.

You search for an immigration detainee using the federal ICE Online Detainee Locator, which works by the detainee's A-Number (a nine-digit immigration identification number) or by their full name, country of birth, and date of birth. Because California detainees are moved often, the A-Number is by far the most reliable way to track someone. If you have it, use it.

When you cannot find them anywhere

If you have searched and your person is not turning up, work through these explanations before assuming the worst.

You searched the wrong system. In California this usually means searching the state prison locator for someone who is in a county jail, either awaiting trial or serving a realignment felony sentence. Check the county jail. The booking is not complete yet. Newly arrested people can take hours to appear on a roster. Try again later the same day. They were released, transferred, or moved between systems. Someone can post bail, be moved between county facilities, or be handed from county to federal or immigration custody, and during a handoff they may briefly appear nowhere. The name does not match the record. People are booked under legal names, middle names, maiden names, or misspellings. Try variations, and search with less information rather than more. They are a minor. Juveniles are not listed in public adult locators at all.

When the online tools fail, calling works. Call the jail or facility you believe is holding them, give the full name and date of birth, and ask the booking desk to confirm custody status. That is often faster than any website.

Get notified automatically: VINELink

Rather than checking rosters over and over, you can register with VINE, the free victim and family notification service available in California. It lets you look up a person's custody status and sign up for automatic alerts about changes such as transfer or release. It is the simplest way to stop refreshing a website every day.

Once you have found them

Finding the person is the first step. Staying connected is the next, and California gives families a real advantage here that most states do not.

California is one of the few states that has made phone calls from its state prisons free. If your person is in CDCR custody, you should not be paying for their calls at all. This is a genuine break for families, and it is worth knowing so you are not signing up for a paid calling plan you do not need for a state prisoner. County jails are different: calls from a California county jail are not automatically free, though their rates are now capped under the federal rules that took effect in April 2026, so they are far cheaper than they used to be.

Mail is still the most reliable form of contact everywhere. Letters and photos reach almost everyone in custody, and a person who hears from home regularly does easier time. You can also send money to most facilities so your person can cover commissary and basic needs, and at county jails, phone time.

To set any of this up for the specific facility holding your loved one, find that facility on InmateAid and follow the instructions on its page, since the rules, the phone setup, and the mailing address are different at every facility, and the difference between a free CDCR call and a paid county jail call depends entirely on where your person is held.

- See every prison, jail, and detention center in California: /prisons/california

- Understand the new 2026 call rates: link to FCC Prison Phone Rate Caps 2026 guide

- Search arrest records across California: Arrest Record Search (honestly labeled affiliate per I239)