Mason County Criminal Records

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Use the official court, custody, police-record, and statewide paths for Mason County, Washington; jurisdiction limits are explained.

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Searches are compiled from court, county, and statewide public-record sources.

Mason County public records: common questions

Where to search Mason County records

Mason County, Washington court, custody, police, and statewide records are kept in separate systems. Start court research with Washington Courts official Mason County Superior Court local rules. Check current custody through Mason County Sheriff’s Office inmate-records and custody-records policy. Use Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts for the state-level path described in this guide.

Court casesWashington Courts official Mason County Superior Court local rules
Current custodyMason County Sheriff’s Office inmate-records and custody-records policy
Statewide recordsWashington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts
Federal recordsFederal court and custody records are outside county systems and require a separate federal search.

Verified local details

These details were drawn from the official sources linked in this guide. Reconfirm addresses, contacts, schedules, fees, and other time-sensitive details with the responsible agency.

Mason County Superior Court is located at 419 North 4th Street, second floor, in Shelton, Washington.
Mason County District Court is located at 414 West Franklin Street in Shelton, and the Washington Courts directory lists 360-427-9670 extension 339 as its phone contact.
Mason County Juvenile Court is located at 426 West Cedar Street in Shelton.
Shelton operates a municipal court at the Shelton Civic Center, 525 West Cota Street.
Mason County Superior Court local rules include civil, criminal, juvenile, family-law, probate, guardianship, adoption, mediation, and guardian ad litem provisions.
Mason County Jail policy requires records staff to maintain inmate booking, confinement, court-appearance, visitation, telephone, housing, property, and disciplinary records.

Mason County official record-source actions
Record type	Agency or source	Scope	Action	Last checked
Court cases	Washington Courts official Mason County Superior Court local rules	County or local	Open source	August 10, 2026
Jail and custody	Mason County Sheriff’s Office inmate-records and custody-records policy	County or local	Open source	Not yet published
Statewide records	Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts	State	Open source	August 10, 2026
Jail and custody	Mason County official source (masoncountywa.gov)	County or local	Open source	Not yet published
Court cases	Mason County official source (courts.wa.gov)	County or local	Open source	August 10, 2026

How this guide is maintained: This matrix only republishes government and agency destinations supported by the researched guide or its reviewed county source registry. Page updated August 10, 2026. Agency sites and coverage can change, so confirm current rules with the source. Read our county source-review and correction policy.

A useful Mason County records search depends on matching the record to the right custodian. Use the questions below for a fast orientation, then follow the linked court, jail, police, and statewide sources for the authoritative record. Mason County has 71,165 residents (2025 estimate). The source map below identifies the relevant local courts and agencies. Offices and online systems change, so confirm details with the agency before relying on a record.

Quick facts

County-equivalent identity: 53-045
Population: 71,165 residents (2025 estimate)
Local detail: Mason County Superior Court is located at 419 North 4th Street, second floor, in Shelton, Washington.
Local detail: Mason County District Court is located at 414 West Franklin Street in Shelton, and the Washington Courts directory lists 360-427-9670 extension 339 as its phone contact.
Local detail: Mason County Juvenile Court is located at 426 West Cedar Street in Shelton.
Local detail: Shelton operates a municipal court at the Shelton Civic Center, 525 West Cota Street.
Local detail: Mason County Superior Court local rules include civil, criminal, juvenile, family-law, probate, guardianship, adoption, mediation, and guardian ad litem provisions.
Local detail: Mason County Jail policy requires records staff to maintain inmate booking, confinement, court-appearance, visitation, telephone, housing, property, and disciplinary records.

What is specific about this local guide

Local detail: Mason County Superior Court is located at 419 North 4th Street, second floor, in Shelton, Washington.
Local detail: Mason County District Court is located at 414 West Franklin Street in Shelton, and the Washington Courts directory lists 360-427-9670 extension 339 as its phone contact.
Local detail: Mason County Juvenile Court is located at 426 West Cedar Street in Shelton.

How can someone check whether a person is in the Mason County Jail?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. How can someone check whether a person is in the Mason County Jail depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

How can I contact Mason County Superior Court, District Court, Juvenile Court, or the County Clerk?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. How can I contact Mason County Superior Court, District Court, Juvenile Court, or the County Clerk depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

Which Mason County court handles a civil, criminal, family, probate, juvenile, or traffic matter?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. Which Mason County court handles a civil, criminal, family, probate, juvenile, or traffic matter depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

Where is Shelton Municipal Court located and how is it different from Mason County District Court?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. Where is Shelton Municipal Court located and how is it different from Mason County District Court depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

How can a Mason County inmate access legal counsel, the law library, or court records?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. How can a Mason County inmate access legal counsel, the law library, or court records depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

What inmate records does the Mason County Sheriff’s Office maintain?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. What inmate records does the Mason County Sheriff’s Office maintain depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

What Mason County Superior Court local rules apply to family law, probate, mediation, or criminal cases?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. What Mason County Superior Court local rules apply to family law, probate, mediation, or criminal cases depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

Which county, municipal, state, or tribal agency has jurisdiction for an incident in Mason County?

For Mason County, start with Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts and Mason County Sheriff’s Office inmate-records and custody-records policy, then confirm the filing court or creating agency. Which county, municipal, state, or tribal agency has jurisdiction for an incident in Mason County depends on the record type and jurisdiction. The reviewed official sources did not provide a complete public searchable inmate roster.

Municipal courts and other local systems

Use Washington State Courts directory for Mason County Superior, District, Juvenile, Probation, County Clerk, and Shelton Municipal Courts for a local or municipal court path. Custody: The Mason County Sheriff’s Office maintains the Mason County Jail and inmate records, including booking, confinement, court-appearance, visitation, and telephone records. The reviewed sources do not establish a current public live custody roster. Municipal: Shelton has a separate municipal court at the Shelton Civic Center. Municipal-court and municipal-police jurisdiction may differ from Mason County District Court and Sheriff jurisdiction depending on the location and charge.

Local cities and separate court systems

The relevant local courts and agencies may serve different incorporated municipalities, so confirm the filing locality before relying on a record.

Mason County court and felony records

Start with Washington Courts official Mason County Superior Court local rules for the official Mason County court path. County: Mason County’s Sheriff and county court services operate within Mason County; the reviewed official sources do not provide a complete county boundary or law-enforcement coverage map. Court: Mason County Superior Court handles superior-court matters, while Mason County District Court handles limited-jurisdiction matters. Juvenile Court and Probation Services are separately listed, and local Superior Court rules govern county-specific procedures.

Police records and public-record requests

Request a police or incident record from the sheriff or municipal police agency that created it. The Washington Courts directory provides court locations and contacts but does not determine law-enforcement jurisdiction for a specific incident.

Mason County custody and jail information

For current custody information, start with Mason County Sheriff’s Office inmate-records and custody-records policy. The reviewed official sources did not provide a complete public searchable inmate roster.

Washington state-level record sources

Statewide Washington sources are separate from Mason County local records. Do not treat a statewide search as a complete county docket, jail roster, or police-record database.

Nearby county coverage in Washington

No adjacent county guide is live yet.

Nearby county links will be added after the neighboring pages pass the same source and content review.

Official Mason County and Washington record sources

For an official starting point, use Washington Courts official Mason County Superior Court local rules. Confirm current access rules, fees, contacts, and jurisdiction with the responsible agency.

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Prefer an official source? For an official starting point, use Washington Courts official Mason County Superior Court local rules. Confirm current access rules, fees, contacts, and jurisdiction with the responsible agency.

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