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City of Diamond Bar

Seal of the City of Diamond Bar
Map Showing City of Diamond Bar

Map showing City of Diamond Bar with surrounding cities and communities. Dark green is San Bernardino County.
Cutaway from Map of Los Angeles County.
See also online Map of Los Angeles County with Cities & Communities.

General Law city
Incorporated: May 18, 1989
City Hall: 21825E Copley Dr, Diamond Bar, California 91765
City Telephone: (909) 860-7000
Website: www.cityofdiamondbar.com
Population (2010 Census):
55,544 (2000 Census: 56,287; 1990 Census: 53,672). For latest State Population Estimates, click here.
Population Density (2010 Census): 3,732.8 persons per square mile
Population Age 65+ (2010 Census): 11.7% (2000 Census: 7.5%; 1990 Census: 4.2%)
Population Under Age 18 (2010 Census): 21.4% (2000 Census: 27.0%; 1990 Census: 28.6%)
Land Area: 14.88 square miles (38.54 square kilometers)
Water Area: 0.01 square miles (0.01 square kilometers)

Other City Facts & Statistics

City Government Officials

Named for the branding iron symbol (a diamond over a bar) of rancher Fredrick Lewis.

City in red below. Click on map for more detailed color map of county.

Map showing location of the City of Diamond Bar