Rucker is a former unincorporated community in Santa Clara County, California, located halfway along the five miles of Monterey Highway …Rucker is a former unincorporated community in Santa Clara County, California, located halfway along the five miles of Monterey Highway between Gilroy and San Martin. The name is official, but not in common use among locals today. Its elevation is listed as 235 feet above mean sea level and NAD27 coordinates are given as 37°03′15″N 121°35′28″W. Supporting the name are local geographic features, Rucker Avenue, Rucker School, and Rucker Creek. The community was part of the Mexican land grant Rancho San Francisco de las Llagas.