Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and September 25, 2026.
Newcastle, Washington, in King County, has about 13,000 residents (2024 Census Bureau estimate). In Washington the public criminal record is the court file, kept by the County Clerk; the statewide criminal history kept by the Washington State Patrol is open to anyone who asks. This guide says where each record of a criminal case from Newcastle is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests and common questions.
Related guides: Newcastle public records, King County criminal records, Newcastle arrest records, Newcastle warrants, Newcastle inmate search, Newcastle court records, Washington arrest records and Washington inmate search.
Criminal Cases in the King County Superior Court
A criminal case from Newcastle is filed in the King County Superior Court or the District Court, which takes misdemeanors, traffic infractions, small claims and civil cases up to $100,000, and the court file, kept by the County Clerk, is the record of it that the public may see.
For King County, SearchSystems opened and checked the court records page for the county at kingcounty.gov/en/dept/dja/courts-jails-legal-system/case-records/r... (page title: Accessing Superior Court Records | King County, Washington), phone 206-477-0691, which answered when SearchSystems opened it on September 23, 2026.
Statewide, Washington Courts Search Case Records is the Administrative Office of the Courts' free statewide case search.
The Washington Criminal History and Your Own Copy
Washington is one of the states that lets anyone look up another person's statewide criminal history: WATCH lets anyone search conviction records by name online, for $12 a search, through the Washington State Patrol. The result is the repository record, what agencies reported to the state, which is wider than one county's court index but can lag it. The search is on the Washington State Patrol site.
Arrest Records Kept Locally in Newcastle
The King County Sheriff's Office and the agency that reports for Newcastle (filed by the FBI as Newcastle Police Department) keep the arrest records in and around Newcastle: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The FBI's agency list also places these agencies in King County: the University of Washington (campus police); the Port of Seattle (other agency); each keeps the records of its own arrests.
The Milton Police Department is listed by the FBI across two counties including King County, so its arrests are not broken out for King County here.
Together, the 36 agencies in King County with all twelve months of 2025 on file reported 31,397 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Newcastle arrest records.
The Crimes Behind the Records: Newcastle in 2025
The agency that reports for Newcastle had 10 violent and 207 property crimes reported for 2025; each one is a report on file with it, and each arrest that follows is the start of a criminal record.
The Prosecuting Attorney for King County
The Prosecuting Attorney decides which arrests in King County become charges and files them in the King County Superior Court or the District Court; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at kingcounty.gov/en/dept/pao (page title: Prosecuting Attorney's Office | King County, Washington), phone 206-477-1200, 516 Third Avenue, W400, Seattle, WA 98104, which answered when SearchSystems opened it on September 24, 2026.
The Sex Offender Registry for Newcastle
Registered sex offenders living in Newcastle are listed on the Washington Sex Offender Registry, run by the Washington Association of Sheriffs and Police Chiefs. Level 2 and Level 3 offenders are listed online; Level 1 offenders are not.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in King County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the Public Records Act (RCW 42.56) a county office must answer a request within 5 business days, and it may charge for copies at 15 cents a page, and set fees for electronic records. The county records request page SearchSystems verified is at kingcounty.gov/en/dept/executive-services/about-king-county/busines... (page title: Submit a Public Records Request | King County, Washington).
Frequently Asked Questions
Are criminal records public in Newcastle?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Washington State Patrol: WATCH lets anyone search conviction records by name online, for $12. The arrest report itself is released by the agency that made the arrest, under the Public Records Act (RCW 42.56).
Can I search Newcastle criminal cases online?
The court records page SearchSystems verified for the county is at kingcounty.gov (page title: Accessing Superior Court Records | King County, Washington). Statewide, Washington Courts Search Case Records is the Administrative Office of the Courts' free statewide case search.
How do I get my own Washington criminal history?
Through the same WATCH search, run on yourself.
Who prosecutes crimes in Newcastle?
The Prosecuting Attorney, reached at 206-477-1200, which files its cases in the King County Superior Court or the District Court.
Is this the official Newcastle website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.