Inside a city
Use that city’s police department. Dublin contracts with the Alameda County Sheriff for police services.
City departmentsHome / California / Alameda County / Sheriff & police
Use the department for the city or place where the arrest happened. A person may remain in city holding briefly before transfer to Santa Rita Jail, so confirm the current location before visiting, mailing, or sending money.
The Sheriff operates Santa Rita Jail, but the Lakeside Drive office is not the jail. Use the custody guide for booking, housing and family services.
Start with where the incident or arrest happened. For an emergency or a crime in progress, call 911.
Use that city’s police department. Dublin contracts with the Alameda County Sheriff for police services.
City departmentsStart with the Sheriff for Castro Valley, San Lorenzo, Ashland, Cherryland and other unincorporated communities.
Sheriff servicesBART Police, campus departments and CHP handle their own property and roadways.
Special jurisdictionsUse the Sheriff locator first. If no county record appears yet, call the arresting agency and ask where the person was taken.
Find someoneThe sheriff is usually the police department for unincorporated areas and the operator of the county jail. An arresting station is usually not the holding facility.
Checked Sep 12, 2026 against alamedasheriff.gov.
Dublin, unincorporated communities, AC Transit and the airport receive specialized Sheriff services.
Checked Aug 20, 2026 against alamedasheriff.gov.
Checked Aug 20, 2026 against alamedasheriff.gov.
These departments police that city. A local arrest still usually books into the county jail.
Checked Aug 20, 2026 against alamedaca.gov.
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Campus police cover that campus only. Off-campus streets belong to the city police or the Sheriff.
CHP handles freeway traffic enforcement through area offices serving Alameda County roadways.
Checked Aug 20, 2026 against chp.ca.gov.
Checked Aug 20, 2026 against chp.ca.gov.
Checked Aug 20, 2026 against chp.ca.gov.
BART, regional parks and housing-authority property use their own public-safety agencies.
Checked Sep 21, 2026 against bart.gov.
Jail411 lists the public agencies that make arrests so families can find the right door. We are not a government agency, a police department or a live custody-records service.
No. The Alameda County Sheriff operates Santa Rita Jail, but Sheriff headquarters and service locations have different addresses and purposes. Open the county jail page for custody and family-service information.
Check the citation or booking paperwork, ask where the incident happened, or call the likely city department. Dublin and unincorporated communities use Sheriff services; BART, campuses and freeways have separate agencies.
The arresting agency can tell you where the person was taken. For current Alameda County custody, use the Sheriff locator. A very recent arrest may not appear until booking or transfer is complete.
Send us the page and the detail that needs attention. Include the agency's official page when you have it. Do not send private booking documents or other sensitive personal information.