Campbel is a city in Santa Clara County, California, and part of Silicon Valley, in the San Francisco Bay Area. As of the 2010 U.S. Census, Campbell’s population is 39,349 and was estimated to be 42,466 in 2018.

Campbell is home to the Pruneyard Shopping Center, a sprawling open-air retail complex that was involved in a famous U.S. Supreme Court case that established the extent of the right to free speech in California. Today, the Pruneyard Shopping Center is home to the South Bay offices of the Federal Bureau of Investigation.

According to the United States Census Bureau, the city has a total area of 5.9 square miles (15 km2). 5.8 square miles (15 km2) of it is land and 0.1 square miles (0.26 km2) of it is water.