Diamond Bar, California

E434513

city suburb

Diamond Bar, California is a suburban city in eastern Los Angeles County known for its residential communities, strong public schools, and proximity to major Southern California freeways.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
Diamond Bar	7
Diamond Bar, California canonical	6

How this entity was disambiguated

This entity first appeared as the object of triple T4219700 — 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: Diamond Bar, California
Context triple: [Diamond Bar High School, locatedIn, Diamond Bar, California]

A. Duarte, California
Duarte, California is a small suburban city in Los Angeles County known for its location along historic Route 66 at the base of the San Gabriel Mountains.
B. Barstow
Barstow is a small city in Southern California known as a major transportation hub and gateway between Los Angeles, Las Vegas, and the Mojave Desert.
C. San Bernardino
San Bernardino is a major inland city in Southern California known as a regional transportation hub and gateway to the Inland Empire.
D. El Monte
El Monte is a commune and town in central Chile known for its agricultural activities and location within the Greater Santiago area.
E. El Monte
El Monte is a suburban city in Southern California’s San Gabriel Valley, known historically as a gateway for settlers and now as a diverse residential and commercial community.
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: Diamond Bar, California
Target entity description: Diamond Bar, California is a suburban city in eastern Los Angeles County known for its residential communities, strong public schools, and proximity to major Southern California freeways.

A. Duarte, California
Duarte, California is a small suburban city in Los Angeles County known for its location along historic Route 66 at the base of the San Gabriel Mountains.
B. Barstow
Barstow is a small city in Southern California known as a major transportation hub and gateway between Los Angeles, Las Vegas, and the Mojave Desert.
C. San Bernardino
San Bernardino is a major inland city in Southern California known as a regional transportation hub and gateway to the Inland Empire.
D. El Monte
El Monte is a commune and town in central Chile known for its agricultural activities and location within the Greater Santiago area.
E. El Monte
El Monte is a suburban city in Southern California’s San Gabriel Valley, known historically as a gateway for settlers and now as a diverse residential and commercial community.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	city ⓘ suburb ⓘ
areaCode	626 ⓘ 909 ⓘ
borderedBy	Brea, California NERFINISHED ⓘ Chino Hills, California NERFINISHED ⓘ Pomona, California NERFINISHED ⓘ Rowland Heights, California NERFINISHED ⓘ Walnut, California NERFINISHED ⓘ
country	United States of America ⓘ surface form: United States
county	Los Angeles County ⓘ
ethnicComposition	significant Asian American population ⓘ significant Hispanic or Latino population ⓘ
FIPSCode	06-19198 ⓘ
fireProtection	Los Angeles County Fire Department NERFINISHED ⓘ
GNISFeatureID	1660624 ⓘ
governmentType	council–manager ⓘ
hasFeature	hilly terrain ⓘ suburban land use ⓘ
highSchool	Diamond Bar High School NERFINISHED ⓘ Ronald Reagan Park-adjacent schools ⓘ
incorporationDate	1989-04-18 ⓘ
knownFor	master-planned neighborhoods ⓘ residential communities ⓘ strong public schools ⓘ
lawEnforcement	Los Angeles County Sheriff’s Department NERFINISHED ⓘ
locatedIn	eastern Los Angeles County ⓘ
majorFreeway	State Route 57 NERFINISHED ⓘ State Route 60 NERFINISHED ⓘ State Route 71 NERFINISHED ⓘ
mayorCouncilForm	yes ⓘ
medianHouseholdIncomeRank	above California average ⓘ
namedFor	Diamond Bar Ranch NERFINISHED ⓘ
park	Pantera Park NERFINISHED ⓘ Summitridge Park NERFINISHED ⓘ Sycamore Canyon Park NERFINISHED ⓘ
partOf	Greater Los Angeles Area ⓘ
population	approximately 55,000 ⓘ
populationCensusYear	2020 ⓘ
region	Inland Empire fringe ⓘ San Gabriel Valley NERFINISHED ⓘ
representedInCongressBy	California’s 35th congressional district NERFINISHED ⓘ
schoolDistrict	Pomona Unified School District NERFINISHED ⓘ Walnut Valley Unified School District NERFINISHED ⓘ
state	California, United States ⓘ surface form: California
timezone	Pacific Time Zone ⓘ
timezoneDST	Pacific Time Zone ⓘ surface form: Pacific Daylight Time
ZIPCode	91765 ⓘ 91789 ⓘ

How these facts were elicited

Referenced by (13)

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

Diamond Bar High School → locatedIn → Diamond Bar, California ⓘ

San Gabriel Valley → contains → Diamond Bar, California ⓘ

Pomona → locatedNear → Diamond Bar, California ⓘ