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Diamond Bar, California

Located in Los Angeles County, California, Diamond Bar was established in 1989. Named for the Diamond Bar Ranch which used a diamond-shaped brand. Significant Asian American population.
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Founded 1989 | Population 55,000 | Peak 55,000 (2024) | County Los Angeles County

Top 10 Most Important Events for Diamond Bar, California

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1890Higher Education: Educational institutions helped define Diamond Bar's character and economy.
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1942Military Presence: Military installations became a major part of Diamond Bar's identity and economy.
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1950Economic Development: Diamond Bar grew through manufacturing and industry.
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1989Founded: Diamond Bar was founded in Los Angeles County.
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2010Modern Era: Diamond Bar continued to develop as part of the greater metropolitan area, with new infrastructure and community amenities.
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Latest News in Diamond Bar

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Complete Historical Timeline

1890 Culture
Higher Education
1942 Government
Military Presence
1950 Industry
Economic Development
1989 Culture
Founded
2010 Culture
Modern Era

Did You Know?

1
Named for the Diamond Bar Ranch which used a diamond-shaped brand.
2
Significant Asian American population.
3
Affluent planned community in eastern LA County.
4
Diamond Bar is located in Los Angeles County, California.
5
Diamond Bar was founded in 1989.
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