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Union Jail, California Inmate Search

Table of contents -
  1. General Information
  2. Visitation Rules
  3. Sending A Mail Or Package
  4. How to Send Money?
  5. How to Make Phone Calls?
  6. Nearby Jails / Prisons

General Information

  • Facility Name Union Jail
  • Facility Type City Jails in California
  • Address 34009 Alvarado-Niles Road, Union City, CA, 94587
  • Phone Number 510-471-1365
  • Capacity
  • City Union City
  • Zip 94587
  • State California
  • County Alameda County
  • Website http://www.unioncity.org/police/ucpd.htm
  • Visiting Hours
    Monday 9:00 AM to 6:00 PM
    Tuesday 9:00 AM to 6:00 PM
    Wednesday 9:00 AM to 6:00 PM
    Thursday 9:00 AM to 6:00 PM
    Friday 9:00 AM to 6:00 PM
    Saturday 9:00 AM to 6:00 PM
    Sunday 9:00 AM to 6:00 PM

The Union Jail, located at 34009 Alvarado-Niles Road, Union City, CA, 94587 is a City Jail and serves . It has a capacity of .

Those close to inmates may:

  • Send inmates mail
  • Deposit money into their inmate trust account
  • Receive calls from them
  • Visit them

If the inmate you are looking for is not on the search above, you can go directly to the http://www.unioncity.org/police/ucpd.htm or you can call the jail directly on: 510-471-1365

Visitation Rules

While inmates can receive visitors at Union Jail, there are strict rules in place. If you don’t adhere to these rules, your visit will be denied (often without warning), and you could risk future visits.


Visitors must schedule a visit, in line with the visitation hours of the jail, and its requirements.


Visitors must also have their government ID on them to be permitted into the visiting area. They must adhere to jail’s dress code. They will not be able to bring anything into the visitation area.


Call 510-471-1365 for scheduling a visit. http://www.unioncity.org/police/ucpd.htm website for more information about the application process.

Sending A Mail Or Package

All mail coming into the prison is inspected by the jail staff.

It is important that for any mail to be processed at Union Jail that the sender’s name and mailing address is included on the envelope.

In addition, the inmate’s full name (that they are in the jail under), the inmate’s SPN & cell block area must be listed.

The following restrictions apply for any mail sent to Union Jail:

  • No perfume, body fluids (including lipstick) or makeup can be included
  • No sexually suggestive photographs
  • No medicines
  • No cash or money orders
  • No food or food items
  • Contraband

For full details on the most uptodate policies, visit the Union Jail’s http://www.unioncity.org/police/ucpd.htm.

To clarify any questions you have on sending mail here, call the Union Jail directly on 510-471-1365.

How to send money?

To add money to an inmate’s trust account at Union Jail, you have a few options.

Don’t send cash by mail. You can deposit a money order. You may also be able to use: Touch Pay Direct to deposit money.

You can call the jail at 510-471-1365 to find out any other updated ways of depositing money for an inmate.

How to make Phone Calls?

Inmates held at Union Jail are not allowed to receive phone calls. They are however allowed to put through collect calls. Some jails have also upgraded their phone systems to allow detainees to make calls directly to landlines and cell phones, which means calls are usually cheaper than if they were on a collect basis.

All calls made out can be recorded and monitored, so care should be taken about what is discussed.

The jail may limit calls to some numbers for security reasons, without providing any warning.

To find the most uptodate information on the phone policies at Union Jail, call 510-471-1365.

Nearby Jails / Prisons

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