Google.com was founded in September 4, 1998  by Larry Page and Sergey Brin .
It was Incorporated in September 4, 1998. On August 19, 2004  it was publicly offered in NASDAQ.

Google HQ is at: 600 Amphitheatre Parkway, Mountain View, CA 94043

They have offices worldwide!

They have almost  2,700 employees known as Googlers! We have one in the Philippines!

Source: Google.com, wikipedia.org