West Santa Clara is an unincorporated census county division (CCD) located on the eastern side of the Santa Cruz Mountains in northwest Santa Clara County, California.

The Foothills,[7] Los Trancos,[8] Monte Bello,[9] Pearson-Arastradero,[10] Picchetti Ranch,[11] Rancho San Antonio[12] and Saratoga Gap[13] preserves are also located in the area.

As of the 2010 US Census, the population was 7,529 residents of whom 67.7% were non-Hispanic white, 22.8% Asian, 4.8% Hispanic, and 4.7% of other races, with a median age of 50.0 years old.

[15] Most residents and businesses in the area use postal zip codes from neighboring cities of Palo Alto, Portola Valley, Los Altos Hills, Cupertino, and Saratoga.

The region lies on the northeastern side of the Santa Cruz Mountains, and supports a relatively cool Mediterranean climate.