King County Jail Roster: Inmate Search, Bookings & Mugshots

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Official King County Jail Roster and Current Inmate Lookup

King County’s Department of Adult and Juvenile Detention (DAJD) operates the official Subject Lookup Tool. It covers the two county-run adult jails:

  • King County Correctional Facility (KCCF) in Seattle.
  • Maleng Regional Justice Center (MRJC) in Kent.

The tool supports custody searches by name, booking number, Universal Control Number (UCN), facility and other permitted filters. It also contains a Subjects Booked in Last 24 Hours section.

Open Official King County Inmate Search County Inmate Lookup Instructions Call Jail: 206-296-1234
Search serviceKing County Subject Lookup
Search priceFree public access
FacilitiesSeattle KCCF and Kent MRJC
Search filtersName, DOB, facility, custody status, booking and UCN
Recent admissionsSubjects booked in the last 24 hours
Jail information line206-296-1234
Seattle jail address500 Fifth Avenue, Seattle, WA 98104
Kent jail address620 W. James Street, Kent, WA 98032
Fastest way to find someone: Open Subject Lookup, search the last name, select the matching record and read the Facility and Booking Number fields. The facility tells you where to visit; the booking number helps with mailing, deposits and inquiries.
Important: This is the official King County, Washington adult jail search. It should not be confused with jails in other counties, the Washington Department of Corrections prison locator or separate municipal detention facilities.

King County Jail Bookings — Last 24 Hours

The official Subject Lookup portal has a separate Subjects Booked in Last 24 Hours view. This is particularly useful when a person was arrested recently and you do not know the exact booking number.

How to check a recent booking

  1. Open King County Subject Lookup.
  2. Find Subjects Booked in Last 24 Hours.
  3. Review the available recent-admission entries.
  4. Use the search box within the results if needed.
  5. Check the name, arresting agency and booking date.
  6. Review the current facility.
  7. Open the record for any available custody details.
  8. Contact the jail if the person was arrested very recently and has not appeared yet.

What does the booking result show?

UCNA person-based identifier in the King County system.
NameThe name associated with the jail record.
Preferred NameMay appear as a separate field.
FacilityWhere the person is being housed.
Arresting AgencyThe agency associated with the current booking.
Booking NumberThe identifier for the detention event.
Booking DateThe recorded date and time of the booking.
ActionsAvailable links to more information.

Can I find historical booking data?

King County publishes adult jail booking datasets through its Open Data service. These are historical reporting datasets rather than a substitute for confirming someone’s custody right now.

The data may cover specific fiscal years, reporting periods or snapshots. The official live Subject Lookup should be used for a current custody question.

King County Open Data Request an Older Booking Record
An arrest is not a conviction. A booking does not establish the final outcome of the case. Filed charges, hearings and dispositions should be verified with the responsible court.

Understanding King County Jail Custody Status and Booking Numbers

King County uses several identifiers that are easy to confuse. Knowing which one an agency or service requires can prevent a failed mail delivery, deposit or records request.

UCNA King County subject identifier associated with the person.
Booking Number / B/AA Book of Arrest identifier associated with a booking episode.
Current FacilityIdentifies the Seattle or Kent detention location.
Booking DateThe date and time recorded when booked.
Currently In CustodyUse this filter to focus on active detention.
Arresting AgencyThe law-enforcement agency associated with the current booking.
HoldAnother legal matter may prevent release.
TransferThe person may move between facilities or correctional authorities.

UCN versus B/A: which should I use?

UCN helps identify the subject across records. B/A, or Book of Arrest, is the booking number that King County specifically asks families to use when sending mail and certain payments.

King County’s inmate mail instructions require the resident’s full 10-digit booking number. Do not substitute a shorter identifier without confirming that the service accepts it.

Does a missing current-custody result mean the person was released?

Not necessarily. The person may have been transferred, booked into a city-operated jail, moved to a state or federal facility or recorded under another name.

Call 206-296-1234 for current custody assistance.

King County Jail Mugshots and Booking Photo Restrictions

King County does not make jail booking photographs generally available to the public. Its Department of Adult and Juvenile Detention explains that booking photos are confidential records under Washington law.

The county identifies RCW 70.48.100 as the controlling legal authority for these restrictions.

Do not expect mugshots in the public jail roster. A name, booking number or arrest record does not create a right to download the person’s booking photograph.

Who may obtain a booking photograph?

King County identifies these potentially authorized recipients:

  • The person who was booked.
  • An attorney representing the person.
  • Law-enforcement agencies.
  • Courts.
  • Someone with the booked person’s written permission.

How to request a legally eligible booking photo

  1. Locate the correct person and booking in Subject Lookup.
  2. Record their full name and booking number.
  3. Obtain the required written permission or relevant court order.
  4. Contact King County DAJD Records.
  5. Identify the specific photo and booking date requested.
  6. Follow the county’s records request and verification instructions.

DAJD Records Office

Telephone: 206-477-5130

Email: Records.DAJD@kingcounty.gov

Official Booking Photograph Disclosure Rules

Older photographs published on third-party sites may be outdated, incorrectly labeled or disclosed without appropriate context. A mugshot does not prove that a person committed a crime.

King County Correctional Facility vs. Maleng Regional Justice Center

King County operates two adult detention facilities. Visitors, attorneys and people posting bail must confirm which facility currently holds the individual.

King County Correctional Facility (KCCF)

City: Seattle

Address:
500 Fifth Avenue
Seattle, WA 98104

Telephone: 206-296-1234

Facility opened

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