Where is Diamond Bar, California, U.S.

Where is Diamond Bar, California Located in the United States? - Diamond Bar is a city located in the Los Angeles County in California, United States. Diamond Bar lies between 33.9992 Degrees North latitudes and -117.8164 Degrees West longitudes.

Location Map of Diamond Bar, Los Angeles, California

About Map: The map shows the location of Diamond Bar in Los Angeles County, in the U.S. state of California.

Diamond Bar Map, California, USA

About Diamond Bar, Los Angeles County, California

Diamond Bar is located in Los Angeles County in the U.S. state of California, United States. It lies in the southern part of the state in the state of the United States within the eastern San Gabriel Valley near the border with San Bernardino County. The city was incorporated in 1989 and was named after the historic Diamond Bar Ranch, which derived its name from a cattle branding symbol, and it developed from ranch land into a suburban residential community.

Population

According to the United States Census Bureau, the population of Diamond Bar is 55,072 as recorded in the 2020 Census, and the population density is approximately 3,700 people per square mile.

Area and Geography

According to the United States Census Bureau, Diamond Bar covers a total area of approximately 14.9 square miles (about 38.6 square kilometers), including about 14.8 square miles (38.3 square kilometers) of land and 0.1 square miles (0.3 square kilometers) of water.

Location and Surroundings

Diamond Bar is situated east of Walnut and west of Chino Hills, positioned within rolling hills at the eastern edge of Los Angeles County. The city features residential neighborhoods, landscaped parks, and nearby open space areas. State Route 60 and State Route 57 provide major transportation routes connecting Diamond Bar to Los Angeles, Orange County, and the Inland Empire.

Attractions and Recreation

Diamond Bar offers parks, golf courses, and community facilities that support recreation and outdoor activities. Popular destinations include Pantera Park, the Diamond Bar Golf Course, and the nearby Chino Hills State Park. The city hosts community events and recreational programs that reflect its suburban environment and family-oriented lifestyle.

Transportation

Diamond Bar is served by State Route 60 and State Route 57, offering convenient highway access throughout Southern California. Public transportation includes regional bus services connecting the city to surrounding communities and transit hubs. The nearest major airport is Ontario International Airport, located approximately 20 miles to the east.

Explore more cities in California or visit the United States Map section to learn more about the country’s geography.

Sources:

Population and area data sourced from the United States Census Bureau (2020 Census). General city information referenced from the Official Diamond Bar City Website.

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Diamond Bar City Facts

Distance from Diamond Bar, CA to Nearby Cities

• Walnut, CA – 4 miles (6 km)
• Pomona, CA – 6 miles (10 km)
• Chino Hills, CA – 8 miles (13 km)
• West Covina, CA – 10 miles (16 km)
• Rowland Heights, CA – 6 miles (10 km)
• La Puente, CA – 9 miles (14 km)
• Covina, CA – 12 miles (19 km)
• Glendora, CA – 14 miles (23 km)
• Ontario, CA – 15 miles (24 km)
• Chino, CA – 12 miles (19 km)
• Rancho Cucamonga, CA – 20 miles (32 km)
• Upland, CA – 18 miles (29 km)
• Anaheim, CA – 20 miles (32 km)
• Fullerton, CA – 18 miles (29 km)
• Riverside, CA – 30 miles (48 km)
• Corona, CA – 25 miles (40 km)
• Pasadena, CA – 25 miles (40 km)
• Los Angeles, CA – 30 miles (48 km)
• Long Beach, CA – 35 miles (56 km)
• Irvine, CA – 35 miles (56 km)

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