The Marin County Jail Inmate Roster is a public resource that allows anyone to check who is currently in custody. MarinCourt.us provides access to publicly available information about current and recent inmates. Additionally, data can be obtained through the official website of the Marin County Sheriff's Office, in person at the jail reception, or by phone. A search in the roster allows you to find out the custody status of a person, the charges filed, and the booking date. The Marin County Sheriff's Office maintains the roster, which is responsible for the jail's upkeep and regularly updates the information on its website.
Search Current Inmates in Marin Jail
There are several ways to find information about individuals held in Marin County Jail.
Online Search
- Go to MarinCourt.us, where you can search for publicly available court and penitentiary information.
- Visit the official site of the Marin County Sheriff — the roster of current inmates is published there.
- For the search, you will need the person's full legal name (last name and first name) or the booking number, if known.
- If there is no separate search field on the roster page, use the browser function Ctrl+F (or Cmd+F on Mac) to find the last name in the list.
Juvenile offenders are not displayed in the public roster — this restriction applies throughout California.
By Phone
Call the jail directly. The operator can confirm if a specific person is in custody if you provide their full name and date of birth.
In Person
Visit the Marin County Jail reception during business hours. Address and contact details:
Lobby hours may vary — it is recommended to call in advance to confirm the schedule.
Find Marin Jail Booking Records Online
A booking record is created every time a person is officially admitted to jail. It is the first document that records the fact of detention.
During the booking process, the following information is generated:
- Unique booking number
- Date and time of admission
- Charges filed
- Arresting agency (police, sheriff, California Highway Patrol, etc.)
- Basic personal information of the detainee
To access booking records online, start with the roster on the sheriff's website. If the person has been released and the record has disappeared from the current list, submit a written request for records. For court cases related to criminal charges, use the ePortal Marin Superior Court — it allows you to search cases by party name or case number.
If the person has been transferred to a state facility, use the CIRIS — CDCR Inmate Locator. To obtain your own criminal record, contact the California Department of Justice — you need to submit fingerprints and pay a $25 fee.
Search the Marin Jail Roster by Last Name or Booking Number
The roster supports two main search methods.
Search by Last Name
Enter the last name in the search field or find it in the alphabetical list. Adding the first name will narrow the results if the last name is common. A few tips:
- Check the spelling — even one wrong letter can yield zero results.
- Try spelling variations if the last name contains a hyphen or apostrophe.
- Some systems allow partial search — enter the first few letters of the last name.
Search by Booking Number
If you know the booking number, enter it — this is the most accurate way to find a specific record. The booking number is usually provided to relatives during the detainee's first call.
If the Search Yields Nothing
The absence of results does not necessarily mean the person was not detained. Possible reasons:
- The person has not been fully processed yet — it may take several hours between arrest and appearance in the roster.
- The person has already been released, and the record has been removed from the current list.
- The person has been transferred to another facility or state prison.
- The name was entered incorrectly — try another spelling variation.
In any of these cases, call the jail at (415) 499-7200 for clarification. To check court cases, use the Marin Superior Court Public Portal.
Jail Roster Updates and Search Limitations in Marin
The inmate roster is updated periodically throughout the day, but it does not happen instantly in real-time. There is usually a delay of one to several hours between the actual booking and the appearance of the record in the online roster — depending on staff workload and time of day.
Main limitations to keep in mind:
- Publication delay. Nighttime or weekend arrests may appear in the roster only the next morning.
- Disappearance of records after release. The roster only displays those currently in custody. After a person is released, posts bail, or is transferred, the record is removed.
- Not an archive. This is not a database of all past bookings. To obtain historical records, you need to submit an official request to the Sheriff's Office or use the Marin Superior Court Records Division.
- Privacy restrictions. Records of minors, some records related to psychiatric holds, and sealed case materials are not published.
To request copies of court documents, fill out the Marin Superior Court Records Request Form. Checks are made payable to Marin County Superior Court; include a self-addressed stamped envelope with your request.
If you are interested in your own criminal record at the state level, the California DOJ provides such information through the Public Records Portal. For those looking to clear their record, there are separate procedures — more details on the California Courts Self Help page.