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Alameda County, California Public Records

Find the right office in Alameda County. Court cases, deeds and parcels, sheriff and jail records, vital records and county filings, each linked to the office that keeps them, with addresses and phone numbers.

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About public records in Alameda County

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County profile

Alameda County at a glance

State
California
County seat
Oakland
Population
1,682,353
Area
821 sq mi
Founded
1853
Cities and towns
16

Alameda County offices and records

Sheriff & Law Enforcement. Alameda County Sheriff's Office is responsible for law enforcement services in the unincorporated areas of Alameda County, as well as operating Alameda County jail system.

Police Departments. Alameda County is served by several law enforcement agencies, including Alameda County Sheriff's Office and municipal police departments such as the Oakland Police Department, Berkeley Police Department, and Fremont Police Department. Each city department is responsible for law enforcement within its jurisdiction, while the Sheriff's Office provides support and coordination for major crimes and county-wide initiatives.

Law Enforcement & Arrests. Alameda County Sheriff's Office, headquartered at 1401 Lakeside Drive, Oakland, CA 94612, provides law enforcement services to unincorporated areas and contract cities within Alameda County. Inmates can be located through the online Inmate Locator system at alamedacountysheriff.org or by calling. Arrest records and booking logs are public records under California Penal Code Section 832.7 and the California Public Records Act (Government Code Section 6250 et seq.).

Criminal Records. For an authoritative source, see Criminal Record Requests | Superior Court of California | County of Alameda .

Arrest Records. They are maintained by the arresting agency, primarily the County Sheriff's Office and municipal police departments.

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Alameda County public-records FAQs

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Where can I find mugshots or booking photos in Alameda County, California?

Mugshots or booking photos in Alameda County are typically managed by the Alameda County Sheriff's Office. While the Sheriff's Office may not provide these photos directly online, you can request them through their Records Unit. For online access, some third-party websites may offer booking photos, but it's important to verify their legitimacy and compliance with privacy laws.

How do I get a criminal background check in Alameda County, California?

To obtain a criminal background check in Alameda County, you should contact the California Department of Justice (DOJ) as they handle statewide criminal records. Locally, you can visit the Alameda County Sheriff's Office or the Oakland Police Department for fingerprinting services, which are required for the DOJ background check process. Ensure you have valid identification and any necessary forms completed before your visit.

How can I look up sex offenders in Alameda County, California?

You can look up sex offenders in Alameda County by visiting the California Megan's Law website, which is maintained by the California Department of Justice. This online registry allows you to search for sex offenders by name, address, or proximity to a specific location. The site provides detailed information about registered sex offenders, including their offenses and current status.

How do I register to vote in Alameda County, California?

You can register to vote in Alameda County through the California online voter registration portal at registertovote.ca.gov, by completing a paper registration form available at the Alameda County Registrar of Voters (1225 Fallon Street, Oakland, CA 94612), or by visiting any Department of Motor Vehicles office. The registration deadline is 15 days before any election, though California offers conditional voter registration allowing eligible citizens to register and vote up through Election Day at designated Vote Centers. All registered voters in the region automatically receive vote-by-mail ballots for every election, and you can track your ballot status online at the county Registrar's website at acvote.org.

How do I look up property records in Alameda County, California?

Property records in Alameda County can be accessed through the Alameda County Recorder's Office at 1106 Madison Street, Oakland, CA 94607, or online at acgov.org where you can search and view recorded documents including deeds, mortgages, liens, and easements dating back to 1984 at no charge. For property tax assessments and parcel information, visit the Assessor's website at acgov.org which offers a free searchable database and GIS mapping system showing assessed values, ownership, and property characteristics. Certified copies of recorded documents can be requested in person or by mail for $11 for the first page and $3 for each additional page.

How do I get a birth or death certificate in Alameda County, California?

Birth and death certificates for events occurring in Alameda County can be obtained from the Alameda County Clerk-Recorder's Office at 1106 Madison Street, Oakland, CA 94607, phone (510) 272-6362. Birth certificates cost $28 for a certified copy and death certificates cost $21; processing takes 2-4 weeks by mail or same-day for in-person requests if the record is immediately available. You can also order vital records online through the California Department of Public Health or VitalChek with additional service fees; applicants must provide valid identification and demonstrate they are authorized to receive the record under California Health and Safety Code Section 103526.

How do I find business license records in Alameda County, California?

Business licenses in Alameda County are typically issued by individual cities rather than the county; contact the city where the business operates for license information. For fictitious business name (DBA) filings in unincorporated areas, contact the Alameda County Clerk-Recorder's Office at (510) 272-6362 or visit 1106 Madison Street, Oakland, CA 94607. To search for corporations, LLCs, and other business entities registered in California, use the free California Secretary of State Business Search portal at bizfileonline.sos.ca.gov which provides statewide business registration information including entity status, registration dates, and agent for service of process.

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Cities, towns and neighboring counties

Use the city page when a record was created by a municipal police department or city office; use the county page for courts, deeds, vital records and jail custody.