Search Alameda County Phone Directory

The Alameda County phone directory spans multiple county offices and free online search tools that cover property records, court cases, inmate data, and recorded documents. Oakland serves as the county seat. With more than 1.6 million residents, Alameda County is one of the larger counties in the Bay Area. You can search for people, businesses, and contact info through the Assessor, Clerk-Recorder, Superior Court, and Sheriff websites. Most searches are free. This page covers each major tool, tells you how to use it, and gives you the phone numbers you need to reach the right office.

Alameda County Property Search Directory

The Alameda County Assessor gives free access to property records through an online search tool. You can look up any parcel in the county by address or parcel number. Results show assessed values, lot size, and building details. Property records are one of the most used parts of the Alameda County phone directory because they help you tie a person to a specific address. If you know where someone lives, you can often find their contact details from there.

Start your search at the Alameda County Property Information portal to look up parcels and assessment data.

The Assessor's Office is at 1221 Oak Street, Room 145, Oakland, CA 94612. Call (510) 272-3787 for questions. The toll free line is (800) 660-7725. Property data in Alameda County goes back many years, so you can track ownership changes over time. This helps with genealogy work and any long-term phone directory research in the county.

Note: Property records may not show a current phone number, but they confirm addresses that you can cross-reference with other Alameda County phone directory tools.

Phone Directory and Recorded Documents in Alameda

The Alameda County Clerk-Recorder keeps a database of recorded documents that you can search online. This covers deeds, liens, marriage records, and other filings. The office is at 1106 Madison Street, Oakland, CA 94607. Call (510) 272-6362 for customer service or (888) 280-7708 for vital records questions. Records before 1969 are on microfilm and must be searched by hand at the office. Newer records are in the digital system. There is a $2.00 credit card service charge per order when you buy copies online.

The Alameda County Public Records Search tool lets you look up recorded documents filed with the county.

Recorded documents often contain names and addresses of buyers, sellers, and other parties. This makes them a strong source for Alameda County phone directory data. Marriage records, for example, list both spouses and their addresses at the time of filing.

Alameda County Court Records Phone Lookup

The Alameda County Superior Court runs an eCourt Public Portal for case searches. You can look up civil, criminal, family, and probate cases by name or case number. The court charges a small fee for name searches. One credit costs $1.00. Five credits cost $4.00. Ten credits cost $7.00. A pack of 75 credits is $45.00. If you need heavy access, the 30-day unlimited pass is $300.00. Document downloads cost $1.00 per page for the first five pages, then $0.50 per page after that, up to a max of $50.00 per document. Court records are useful for phone directory work in Alameda County because they list parties by full name and often include addresses on the filings.

Under the California Public Records Act, court records are generally open to the public. Some case types have restrictions. Family law files and juvenile cases often have sealed portions. But most civil and criminal records in Alameda County are available for search. AB 1524, which took effect January 1, 2026, lets anyone use their own phone to photograph electronic court records at the courthouse. This is a low cost way to get Alameda County phone directory data from court files without paying per page fees.

Find People in Alameda County Jail Records

The Alameda County Sheriff has an inmate locator tool that shows who is in custody at Santa Rita Jail and other facilities. You search by name. Results show booking details and charges.

Use the Alameda County Inmate Locator to search current jail records.

The Sheriff's Office main line is (510) 272-6878. Santa Rita Jail is at (925) 551-6500. The inmate locator updates throughout the day. It is a useful piece of the Alameda County phone directory for anyone trying to locate a person who may be in custody. You should have the full name of the person to get accurate results. Partial names may return too many matches.

Note: Booking data may take several hours to appear in the system after someone is brought into Alameda County custody.

State Resources for Alameda County Searches

Several state databases help fill gaps in the Alameda County phone directory. The Department of Consumer Affairs license search covers over 3.4 million licensed professionals in California. You can filter by location to find license holders in Alameda County. Fields covered include nursing, pharmacy, real estate, and over 280 other professions. Each result shows the license status and practice address. The State Bar Attorney Search works for finding lawyers. Filter by county to see all attorneys registered in Alameda County. The Megan's Law database from the California DOJ lets you search for registered sex offenders by name, city, or zip code in Alameda County. Contact them at (916) 210-3113.

The State Controller runs PublicPay, a site that shows pay data for about 2 million government workers across California. You can search for Alameda County employees by name or job title. The DMV also keeps driver and vehicle records. An online driver record costs $2.00. These state tools add depth to any Alameda County phone directory search when local databases come up short.

Cities in Alameda County

Alameda County has several cities with their own local offices. The ones below have phone directory pages on this site.

Nearby County Phone Directories

Alameda County borders several other counties that have their own public record tools. Check the pages below for phone directory resources in those areas.