Almaden Valley is nestled between the Santa Teresa Hills and the Santa Cruz Mountains in the southeastern portion of San Jose. It received its namesake from the New Almaden Quicksilver Mines, the oldest and most-productive mercury mines in the United States. The mines have since been converted into the recreational site of Almaden Quicksilver County Park. 

Almaden Valley is home to mostly upper-middle-class families, with a 2011 estimate placing the median income at $182,981. It is home to the IBM Almaden Research Center and includes top-ranking K-12 schools. The cost of a home in the neighborhood is generally above $1 million.