Alameda County Sheriff’s Office

E474595

county sheriff's office law enforcement agency

The Alameda County Sheriff’s Office is the primary law enforcement agency responsible for policing unincorporated areas, operating county jails, and providing public safety services throughout Alameda County, California.

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All labels observed (5)

Label	Occurrences
Alameda County Sheriff’s Office canonical	6
Alameda County Sheriff	2
Alameda County Sheriff's Office	1
Alameda County Sheriff’s Office (contract)	1
Alameda County law enforcement agencies	1

How this entity was disambiguated

This entity first appeared as the object of triple T4864768 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Alameda County Sheriff’s Office
Context triple: [District Attorney of Alameda County, worksWith, Alameda County Sheriff’s Office]

A. San Francisco Sheriff’s Office
The San Francisco Sheriff’s Office is the county law enforcement agency responsible for operating jails, providing court security, and performing civil and custody-related duties within the City and County of San Francisco.
B. Sacramento County Sheriff’s Office
The Sacramento County Sheriff’s Office is the primary law enforcement agency responsible for policing unincorporated areas and providing countywide public safety services in Sacramento County, California.
C. Calaveras County Sheriff’s Office
The Calaveras County Sheriff’s Office is the primary law enforcement agency responsible for public safety, patrol, investigations, and jail operations within Calaveras County, California.
D. Los Angeles County Sheriff's Department
The Los Angeles County Sheriff's Department is the primary law enforcement agency serving Los Angeles County, California, responsible for policing unincorporated areas, operating county jails, and providing contract services to numerous cities.
E. Alameda County Board of Supervisors
The Alameda County Board of Supervisors is the elected governing body responsible for setting policy, passing local laws, and overseeing county services and budgets in Alameda County, California.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Alameda County Sheriff’s Office
Target entity description: The Alameda County Sheriff’s Office is the primary law enforcement agency responsible for policing unincorporated areas, operating county jails, and providing public safety services throughout Alameda County, California.

A. San Francisco Sheriff’s Office
The San Francisco Sheriff’s Office is the county law enforcement agency responsible for operating jails, providing court security, and performing civil and custody-related duties within the City and County of San Francisco.
B. Sacramento County Sheriff’s Office
The Sacramento County Sheriff’s Office is the primary law enforcement agency responsible for policing unincorporated areas and providing countywide public safety services in Sacramento County, California.
C. Calaveras County Sheriff’s Office
The Calaveras County Sheriff’s Office is the primary law enforcement agency responsible for public safety, patrol, investigations, and jail operations within Calaveras County, California.
D. Los Angeles County Sheriff's Department
The Los Angeles County Sheriff's Department is the primary law enforcement agency serving Los Angeles County, California, responsible for policing unincorporated areas, operating county jails, and providing contract services to numerous cities.
E. Alameda County Board of Supervisors
The Alameda County Board of Supervisors is the elected governing body responsible for setting policy, passing local laws, and overseeing county services and budgets in Alameda County, California.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	county sheriff's office ⓘ law enforcement agency ⓘ
cooperatesWith	California Highway Patrol ⓘ Federal Bureau of Investigation ⓘ local police departments in Alameda County ⓘ
country	United States ⓘ linked to: United States of America
county	Alameda County ⓘ
electedOfficial	Alameda County Sheriff ⓘ linked to: Alameda County Sheriff’s Office
employs	civilian staff ⓘ correctional officers ⓘ sworn deputies ⓘ
fundedBy	Alameda County budget ⓘ
governingBody	Alameda County Board of Supervisors ⓘ
hasDivision	administrative services division ⓘ custody and corrections division ⓘ investigations division ⓘ patrol division ⓘ
hasUnit	K-9 unit ⓘ linked to: K-9 Unit SWAT team ⓘ air support unit ⓘ bomb squad ⓘ marine patrol unit ⓘ
headquartersLocation	Oakland, California ⓘ linked to: Oakland
jurisdiction	Alameda County, California ⓘ linked to: Alameda County
lawEnforcementType	full-service law enforcement agency ⓘ
ledBy	Alameda County Sheriff ⓘ linked to: Alameda County Sheriff’s Office
legalAuthority	California state law ⓘ
operates	county jail system of Alameda County ⓘ
oversees	Glenn E. Dyer Detention Facility ⓘ Santa Rita Jail ⓘ
partOf	Alameda County government ⓘ
provides	community outreach programs ⓘ crime prevention programs ⓘ inmate transportation services ⓘ training for law enforcement personnel ⓘ
providesServiceTo	incorporated cities by contract in Alameda County ⓘ unincorporated communities in Alameda County ⓘ
responsibleFor	civil process service in Alameda County ⓘ coroner services in Alameda County ⓘ corrections operations in Alameda County ⓘ court security services in Alameda County ⓘ emergency services coordination in Alameda County ⓘ operating county jails in Alameda County ⓘ policing unincorporated areas of Alameda County ⓘ providing public safety services in Alameda County ⓘ search and rescue operations in Alameda County ⓘ
sector	public safety ⓘ
state	California ⓘ linked to: California, United States

How these facts were elicited