The City of Industry is a city in the San Gabriel Valley, in eastern Los Angeles County, California, United States. As suggested by its name, the city is almost entirely industrial—while it contains over 3,000 businesses employing 67,000 people, the 2010 census recorded its resident population at 219, making it the second smallest city in California by population. It was incorporated on June 18, 1957, and has become the economic hub for the San Gabriel Valley.