Norwalk is a suburban city in Los Angeles County, California, United States. The population is estimated to be 107,096 as of 2014. It is the 58th most densely-populated city in California.Founded in the late 19th century, Norwalk was incorporated as a city in 1957. It is located 17 miles southeast of downtown Los Angeles and is part of the Greater Los Angeles area.Norwalk is a member of the Gateway Cities Council of Governments. Norwalk's sister cities are Morelia, Michoacán, and Hermosillo, Sonora, in Mexico.