About Diamond Bar, California

Diamond Bar is a city named after the “diamond over a bar” branding iron registered in 1918 by ranch owner Frederick E. Lewis. According to the 2010 United States Census, Diamond Bar has a median household income at one of the top earning percentiles in the country at $88,422, with 5.9% of the population living below the federal poverty line. The City had a population of 55,720 as of the 2019 census.

Located at the junction of the Pomona and Orange freeways, Diamond Bar is primarily residential with shopping centers interspersed throughout the city. The City features a public Los Angeles County golf course. It is also home to the Diamond Bar Country Estates, a private guarded community.

Both the CA-60 Freeway and the CA-57 Freeway run through Diamond Bar. The I-10 Freeway is just north of the city and CA-71 is just east of the city. Major thoroughfares include Grand Avenue, Diamond Bar Boulevard, Pathfinder Road, Golden Springs Drive, and Brea Canyon Road.