Paramount is a city in Los Angeles County, California, United States. According to the 2010 census, the city had a total population of 54,098, down from 55,266 at the 2000 census. Paramount is part of the Greater Los Angeles Area and is bordered by Compton and Lynwood to the west, South Gate and Downey to the north, Bellflower to the east and south, and Long Beach to the south.

Downey is a city located in Southeast Los Angeles County, California, United States, 13 mi (21 km) southeast of Downtown Los Angeles. It is considered part of the Gateway Cities. The city is the birthplace of the Apollo space program. It is also the home of the oldest operating McDonald's restaurant in the world. As of the 2020 census, the city had a total population of 114,355.