Fun fact: before the computer and electronics companies moved in, the region was poetically known as the Valley of Heart's Delight in the early 1900s for the fruit orchards that populated its fields. Apricots, prunes, and almonds were just some of the foods grown here.
No one knows for sure who exactly coined the moniker of Silicon Valley, but it was popularized by a technology reporter named Don Hoefler in the 1970s. The name stuck, clearly, and now not only does Silicon Valley denote a physical part of the world, but the name has also come to represent the rise of the internet, the digital world, and tech wealth, among other things.