ci.garden-grove.ca.us Crystal Cathedral in Garden Grove Garden Grove is a city located in northern Orange County, California. The population was 170,883 at the 2010 census. State Route 22, also known as the Garden Grove Freeway, passes through the city running east-west. The city is known outside the Southern California area for being the home of Robert H. Schuller's Crystal Cathedral, from which religious broadcasts are made. Garden Grove has the second-largest Vietnamese American population (35,406 (2010)) and second highest concentration (21.4%) of any city in the nation. The city has a distinct community within it, West Garden Grove, which is located in the westernmost portion of the city. It is connected to the rest of Garden Grove by a narrow strip of land that runs along Garden Grove Boulevard.