South Gate is the 19th largest city in Los Angeles County, California, United States, with 7.4 square miles. South Gate is located 7 miles southeast of Downtown Los Angeles. It is part of the Gateway Cities region of southeastern Los Angeles County. The city was incorporated on January 20, 1923, and it became known as the "Azalea City" when it adopted the flower as its symbol in 1965. As of the 2020 census, the city had a population of 92,726.