About San Mateo County

Population 745,100 residents
County Seat Redwood City
Municipalities 20 Cities & Towns
Area 744 square miles
Established 1856

San Mateo County is located in the San Francisco Bay Area of California, occupying the central portion of the San Francisco Peninsula. San Mateo County seat is Redwood City, situated at 400 County Center, Redwood City, CA 94063. With a population of approximately 764,000 residents across 449 square miles of land area, San Mateo County ranks as one of the most populous and affluent counties in California. San Mateo County stretches from the San Francisco city limits in the north to Santa Clara County in the south, bounded by the Pacific Ocean to the west and the San Francisco Bay to the east. Major landmarks include the Pacific Coast Highway (Highway 1), Crystal Springs Reservoir, San Bruno Mountain State Park, and numerous coastal beaches including Half Moon Bay. Incorporated in 1856, San Mateo County has evolved from agricultural ranching lands to become a global technology and innovation hub. San Mateo County includes 20 incorporated cities including Daly City, San Mateo, Burlingame, Millbrae, San Bruno, South San Francisco, Pacifica, Foster City, Belmont, San Carlos, Redwood City, Menlo Park, Atherton, Woodside, Portola Valley, Colma, Brisbane, Half Moon Bay, Hillsborough, and East Palo Alto. What makes San Mateo County unique is its position at the epicenter of Silicon Valley innovation, housing numerous Fortune 500 company headquarters and venture capital firms, while maintaining agricultural heritage along the coastal Coastside communities. Key county offices include San Mateo County Recorder-Clerk at 555 County Center, 1st Floor, Redwood City, CA 94063; the County Assessor-Chief Deputy Clerk-Recorder at the same address; and the County Controller's Office managing financial records.

400 County Center, Redwood City, CA 94063

Court Records & Case Information

The San Mateo County Superior Court serves San Mateo County and is located at 400 County Center in Redwood City. The court handles civil, criminal, family, and probate cases for this county. Court records and case filings can be requested in person or through the California online court portal.

The San Mateo County Superior Court, located at 400 County Center in Redwood City, handles various case types, including civil, criminal, family, probate, and juvenile matters.

Sheriff, Police & Law Enforcement

Law Enforcement & Arrests

  • Inmates can be located through the Sheriff's online Inmate Locator system at https://www.smcsheriff.com/inmate-locator, which provides booking information, charges, bail amounts, and projected release dates.
  • Citizens may request arrest records by submitting written requests to the arresting agency, though certain information may be withheld under exemptions in Government Code Section 6254(f) for ongoing investigations.
400 County Center, Redwood City, CA 94063 • Phone: 650-363-4911

Criminal, Arrest & Jail Records

Arrest Records

  • Requests for arrest records can be made in person, by mail, or through online portals provided by the agencies.

Jail & Inmate Records

  • In California, the bail process involves posting a bond through a bail bondsman or paying the full bail amount to secure the release of an inmate pending trial.

Courts & Case Records

  • More detailed document access requires in-person visits to the Records Section at the Hall of Justice, 400 County Center, 1st Floor, Redwood City, with copies charged at $0.50 per page for standard documents.
400 County Center, Redwood City, CA 94063 • Phone: 650-261-5000
400 Grand Avenue, South San Francisco, CA 94080

Property & Public Records

  • Documents recorded before 1976 require in-person or mail research requests.
  • Certified copies cost $11 for the first page plus $3 for each additional page of the same document, with standard non-certified copies available at reduced rates.
  • Recording fees are $0 for non-assessable real property conveyances as of recent California legislative changes, though various services fees apply.

Vital Records

Vital records for this county include birth, death, marriage, and divorce certificates issued under state vital statistics law.

  • Processing times are typically 10-15 business days for mail requests and immediate for in-person walk-in service during business hours.
  • Death certificates for deaths occurring in San Mateo County cost $21 for the first certified copy and $14 for each additional copy, available through the same channels with similar processing times.
  • Divorce records (Marriage Dissolution Decrees) are maintained by the Superior Court of California, County of San Mateo, not the County Clerk, and must be requested through the court at 400 County Center, Redwood City.
  • Online ordering through approved vendors like VitalChek is available for expedited service with additional convenience fees.

Business & Licensing

Business records, licenses, and permits for this county are processed by the County Clerk and local government offices.

  • FBN filings cost $26 for the first business name plus $10 for each additional name filed simultaneously, and must be renewed every five years.
  • This free online search provides entity status, registration dates, agent for service of process, and entity numbers.
  • The California Department of Tax and Fee Administration issues seller's permits for businesses collecting sales tax.
555 County Center, Redwood City, CA 94063 • Phone: 650-363-4500

Official Government Resources

Frequently Asked Questions

How can I search for someone recently arrested in San Mateo County, California?
To search for someone recently arrested in San Mateo County, you can use the inmate search feature on the San Mateo County Sheriff's Office website. The Maguire Correctional Facility is the primary jail in the county where arrestees are held. You can access the inmate lookup tool online by visiting the Sheriff's Office section dedicated to inmate information. This tool allows you to search by name or booking number to find current inmates and their booking details.
Mugshots or booking photos in San Mateo County are typically managed by the San Mateo County Sheriff's Office. While these photos are part of public records, they may not be readily available online due to privacy laws. You can request access to these records by contacting the Records Division of the Sheriff's Office directly. It's important to note that the availability of such records may be subject to certain restrictions under California law.
To obtain a criminal background check in San Mateo County, you need to contact the California Department of Justice (DOJ), which handles statewide background checks. Locally, you can visit the San Mateo County Sheriff's Office to request fingerprinting services, which are required for the DOJ background check process. The results will include criminal history information specific to California and are typically used for employment, licensing, or personal review purposes.
You can look up sex offenders in San Mateo County by accessing the California Megan's Law website, which is the official state registry. This online database allows you to search for registered sex offenders by name, address, or proximity to a specific location. The website provides detailed information about each offender, including their offenses and current status, helping residents stay informed about their community.
You can register to vote in San Mateo County through the California Secretary of State's online portal at https://registertovote.ca.gov or by submitting a paper application to the San Mateo County Registration & Elections Division at 40 Tower Road, San Mateo, CA 94402 (phone: 650-312-5222). The registration deadline is 15 days before any election, though California offers conditional voter registration through Election Day at the Elections Office or any vote center. Once registered, you will automatically receive vote-by-mail ballots for all elections, and you can request replacement ballots or find vote center locations at https://www.smcacre.org.
Property records in San Mateo County can be searched through two primary offices: the County Recorder-Clerk at https://recorder.smcgov.org for recorded documents like deeds, mortgages, and liens (free search available from 1976 forward), and the County Assessor at https://assessor.smcgov.org for property tax assessments, ownership information, and sales history (completely free). Both offices are located at 555 County Center, Redwood City, CA 94063. The county's GIS parcel viewer at https://gis.smcgov.org integrates property boundaries, zoning, and environmental data. Certified copies of recorded documents cost $11 for the first page plus $3 per additional page.
Birth and death certificates for events occurring in San Mateo County are available from the County Clerk-Recorder's Office at 555 County Center, 1st Floor, Redwood City, CA 94063 (phone: 650-363-4500, website: https://recorder.smcgov.org). Birth certificates cost $28 for the first certified copy and death certificates cost $21, with additional copies available at reduced rates. You can order in person for same-day service, by mail with 10-15 business day processing, or online through authorized vendors for expedited delivery. Valid photo identification and proof of eligibility under California Health and Safety Code Section 103526 (immediate family member, legal representative, or authorized person) are required.
Business licenses in San Mateo County are primarily issued by individual cities, so you should contact the city clerk or finance department where the business operates. For Fictitious Business Name (DBA) statements filed in San Mateo County, contact the County Clerk-Recorder at 650-363-4500 or visit 555 County Center, Redwood City. For corporations, LLCs, and other registered business entities, search the free California Secretary of State database at https://bizfileonline.sos.ca.gov. Professional licenses can be verified through California state licensing boards at https://search.dca.ca.gov.

Nearby Counties

Santa Clara County CA Alameda County CA San Francisco County CA Santa Cruz County CA