Holy City is an unincorporated community in Santa Clara County, California. Once considered a Utopian community in the 1920s and 1930s, it is now considered a ghost town. The town is located in the Santa Cruz Mountains, off State Route 17 on Old Santa Cruz Highway. It is part of the Lexington Hills census designated place. Its ZIP code is 95026, and its area codes are 408 and 669.