Bell Gardens is a city in the U.S. state of California in the Los Angeles metropolitan area. Located in Los Angeles County, the city's population was 42,072 at the 2010 census, down from 44,054 at the 2000 census. Bell Gardens is part of the Gateway Cities Region, a largely urbanized region located in southeastern Los Angeles County.

The Gateway Cities Region, or Southeast Los Angeles County, is an urbanized region located in southeastern Los Angeles County, California, between the City of Los Angeles proper, Orange County, and the Pacific Ocean. The cluster of cities has been termed "Gateway Cities" in that they serve as a "gateway" between the LA and Orange counties, with the city of Cerritos equidistant from Downtown L.A., Long Beach, and Santa Ana in Orange County. As such, the area is central to the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (MSA), and has a population of approximately 2,000,000 residents.