Alameda County

E15834

administrative division county

Alameda County is a populous and diverse county in the San Francisco Bay Area that includes cities such as Oakland and Berkeley.

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All labels observed (7)

Label	Occurrences
Alameda County, California	472
Alameda County canonical	107
County of Alameda	2
Alameda County Tri-Valley	1
Alameda County region	1
Alameda County unincorporated area	1
Alameda County, California, United States	1

How this entity was disambiguated

This entity first appeared as the object of triple T22109 — 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
Context triple: [Northern California, contains, Alameda County]

A. San Francisco County
San Francisco County is a densely populated, culturally diverse urban county on the tip of the San Francisco Peninsula, encompassing the city of San Francisco and serving as a major economic and technological hub in California.
B. Sacramento County
Sacramento County is a county in Northern California that includes the state capital, Sacramento, and serves as a major political and economic hub of the region.
C. San Mateo County, California
San Mateo County, California is a coastal county in the San Francisco Bay Area known for its affluent communities, tech industry presence, and proximity to both San Francisco and Silicon Valley.
D. Santa Clara
Santa Clara is a Silicon Valley city in California known for its high-tech industry presence, Levi’s Stadium, and Santa Clara University.
E. Humboldt County
Humboldt County is a rural coastal county in far Northern California known for its redwood forests, rugged Pacific shoreline, and strong cannabis-growing culture.
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
Target entity description: Alameda County is a populous and diverse county in the San Francisco Bay Area that includes cities such as Oakland and Berkeley.

A. San Francisco County
San Francisco County is a densely populated, culturally diverse urban county on the tip of the San Francisco Peninsula, encompassing the city of San Francisco and serving as a major economic and technological hub in California.
B. Sacramento County
Sacramento County is a county in Northern California that includes the state capital, Sacramento, and serves as a major political and economic hub of the region.
C. San Mateo County, California
San Mateo County, California is a coastal county in the San Francisco Bay Area known for its affluent communities, tech industry presence, and proximity to both San Francisco and Silicon Valley.
D. Santa Clara
Santa Clara is a Silicon Valley city in California known for its high-tech industry presence, Levi’s Stadium, and Santa Clara University.
E. Humboldt County
Humboldt County is a rural coastal county in far Northern California known for its redwood forests, rugged Pacific shoreline, and strong cannabis-growing culture.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	administrative division ⓘ county ⓘ
borderedBy	Contra Costa County ⓘ San Francisco Bay ⓘ San Joaquin County ⓘ San Mateo County, California ⓘ surface form: San Mateo County Santa Clara County ⓘ Stanislaus County ⓘ
characteristic	economically diverse ⓘ ethnically diverse population ⓘ
containsCity	Alameda, California ⓘ surface form: Alameda Berkeley ⓘ Dublin ⓘ Fremont ⓘ Hayward ⓘ Livermore ⓘ Newark ⓘ Oakland ⓘ Fremont ⓘ surface form: Pleasanton San Leandro ⓘ Union City ⓘ
containsPort	Port of Oakland ⓘ
containsSettlement	Emeryville, California ⓘ surface form: Emeryville Piedmont ⓘ
country	United States of America ⓘ surface form: United States
countySeat	Oakland ⓘ
fipsCode	06001 ⓘ
gnisID	277477 ⓘ
governmentType	county government ⓘ
hasAreaType	land and water ⓘ
hasMajorAirport	Oakland International Airport ⓘ
hasPublicTransitSystem	AC Transit ⓘ BART ⓘ surface form: Bay Area Rapid Transit
hasUniversity	California State University, East Bay ⓘ University of California, Berkeley ⓘ
isoCode	California, United States ⓘ surface form: US-CA
language	English ⓘ
largestCity	Oakland ⓘ
legislativeBody	Alameda County Board of Supervisors ⓘ
locatedIn	California, United States ⓘ surface form: California San Francisco Bay Area ⓘ
locatedOn	east shore of San Francisco Bay ⓘ
majorIndustry	education ⓘ healthcare ⓘ technology ⓘ
namedAfter	Alameda (Spanish word meaning “grove of poplar trees”) ⓘ
observesDaylightSavingTime	yes ⓘ
partOf	San Francisco Bay Area ⓘ
regionType	urban ⓘ
state	California, United States ⓘ surface form: California
timeZone	Pacific Time Zone ⓘ

How these facts were elicited

Referenced by (585)

Full triples — surface form annotated when it differs from this entity's canonical label.

Castro Valley, California → unincorporatedAreaGovernedBy → Alameda County ⓘ

Dublin, California → county → Alameda County ⓘ

Albany, California → locatedIn → Alameda County ⓘ