Monte Sereno (from Spanish monte, hill, and sereno, serene) is a city in Santa Clara County, California, USA. The population was 3,341 at the 2010 census. The city is located in the foothills of the Santa Cruz Mountains, about 10 miles (16 km) southwest of San Jose, immediately northwest of Los Gatos, and southeast of Saratoga. The city is named for the 2,580-foot (790 m) El Sereno Mountain, upon the slopes of which the southern portion of the city is built. The community is entirely residential, with no commercial zoning and 99% single-family housing, and is an upscale Silicon Valley bedroom community. Monte Sereno shares the 95030 ZIP code with the town of Los Gatos.