Search Mercer Island Inmate Population Records
Mercer Island inmate population records are found through the King County jail system, since the Mercer Island Police Department contracts with King County for jail services. When Mercer Island Police make an arrest, the person is transported to one of two King County facilities depending on the charge type. Misdemeanor cases typically go to the Maleng Regional Justice Center in Kent, while felony arrests route to the King County Correctional Facility in downtown Seattle. The King County JILS online search covers both locations and lets you look up current custody status by name.
Mercer Island Jail Overview
Where Mercer Island Arrests Are Processed
Mercer Island sits in the middle of Lake Washington, connected to the mainland by Interstate 90. The city has its own police department at 9611 SE 36th St, Mercer Island, WA 98040. But like many smaller King County cities, Mercer Island does not operate its own jail. Arrestees are transported off the island to King County detention facilities for booking.
Misdemeanor arrests generally go to the Maleng Regional Justice Center (RJC) in Kent. That facility is at 401 4th Ave N, Kent, WA 98032, and it serves as the main booking location for South and East King County. Felony arrests go to the King County Correctional Facility (KCCF) at 500 5th Ave, Seattle, WA 98104. Both facilities are run by the King County Department of Adult and Juvenile Detention (DAJD).
| Mercer Island PD | 9611 SE 36th St, Mercer Island, WA 98040 |
|---|---|
| Misdemeanor Facility | Maleng Regional Justice Center, 401 4th Ave N, Kent, WA 98032 |
| Felony Facility | King County Correctional Facility, 500 5th Ave, Seattle, WA 98104 |
| Managing Agency | King County DAJD |
| DAJD Website | kingcounty.gov/dept/dajd |
Once booked, a Mercer Island arrestee enters the King County jail population along with all other King County detainees. Their record appears in the same JILS system as everyone else in the county. There is no separate Mercer Island jail log. All custody data flows through King County.
How to Search the Mercer Island Inmate Population
The King County JILS (Jail Information and Lookup System) is the tool to use. Go to the JILS subject lookup page and enter a last name. The system searches across both King County jail facilities and returns current custody records, including booking date, charges, arresting agency, and facility location.
JILS does not filter by city of arrest, so you will see results from all King County agencies. That is fine for a basic lookup. If you get multiple results for a common name, the booking date and arresting agency field can help you confirm which record belongs to a Mercer Island arrest. The arresting agency will be listed as "Mercer Island PD" for those cases.
The King County DAJD page below is the official source for Mercer Island inmate population records and provides links to the JILS lookup, visiting information, and other jail services.
From the DAJD page you can also get visiting hours, inmate phone access information, and how to add money to a jail account. These practical details are on the same site as the inmate search, which makes it a useful single stop for anyone dealing with a Mercer Island custody situation.
Note: JILS reflects current custody only. If someone was released, the record may no longer appear. For historical booking data, submit a public records request to King County DAJD.
Public Records Access for Mercer Island Inmate Data
The Washington Public Records Act at RCW 42.56 gives the public the right to request booking logs, jail rosters, and arrest records from government agencies. You do not need a reason. The agency receiving your request must respond within five business days. For Mercer Island-related records, requests go to either the Mercer Island Police Department or King County DAJD depending on what you need.
Jail rosters are also specifically addressed by RCW 70.48.100, which requires all county jails to maintain a public record of every person confined. That register must show each person's name, the time and date of confinement, and how they were released. The JILS system satisfies this requirement for all King County facilities, including bookings from Mercer Island arrests.
To request records from Mercer Island PD, contact them at 9611 SE 36th St, Mercer Island, WA 98040. For DAJD-held records, use the King County public records request process at kingcounty.gov/dept/dajd. Written requests are preferred for anything beyond basic roster queries.
VINE Notifications for Mercer Island Inmates
VINE (Victim Information and Notification Everyday) is a free alert service that notifies you when an inmate's custody status changes. For Mercer Island inmates held at King County facilities, you can register through VINELink.com. The service covers both the Maleng Regional Justice Center and the downtown King County Correctional Facility.
VINE sends notifications by phone, text, or email. You do not need to provide your name to register. Set up an alert for a specific person and you will be notified when they are released, transferred, or have a court date change. Updates come in roughly every 15 minutes. The service is run statewide by the Washington Association of Sheriffs and Police Chiefs, so coverage is consistent across King County.
This service is most useful for victims and family members who need timely notice of custody changes. It is free and anonymous, and you can track more than one person at the same time if needed.
Court Records for Mercer Island Cases
A jail record and a court record are different things. The JILS system shows current custody. It does not show what happened in court. To find out how a Mercer Island case was resolved, search the Washington Courts system at courts.wa.gov. You can search by name or case number at no cost.
Misdemeanor cases from Mercer Island are heard in King County District Court. Felony cases go to King County Superior Court. Both are searchable through the courts.wa.gov portal. Court records show charges, hearing dates, dispositions, and sentences. This is the place to check if you want to know whether charges were filed, reduced, or dismissed after an arrest.
If you need certified court documents, contact the King County District or Superior Court clerk directly. Online searches show general case data. Certified copies require a formal request and may have a small fee.
State Resources for Mercer Island Inmate Searches
For anyone from Mercer Island sentenced to more than one year in prison, the Washington State DOC system is where their record will be. The DOC incarcerated person search at doc.wa.gov covers all 10 state prisons and reentry centers. Search by name or DOC number to get the current facility and projected release date.
The WATCH system at watch.wsp.wa.gov provides Washington State Patrol criminal history searches for $11 per lookup. WATCH is fingerprint-based, which makes it more accurate than a name search alone. It covers all Washington convictions and recent arrests with pending dispositions. If you need verified background data on a Mercer Island individual, WATCH is the most thorough public option available.
The statutes that govern public access to these records are RCW 42.56 on public records and RCW 70.48.100 on jail registers. Both are available at the Revised Code of Washington online portal.
King County Inmate Population Records
Mercer Island is in King County. All Mercer Island arrests go to King County jail facilities. The county page covers both King County detention facilities and the full JILS lookup system.
Nearby Cities
These cities are near Mercer Island and also use the King County jail system for inmate population records.