Source: http://www.theverge.com/2014/2/26/544403...

In 1999 Google moved into its first Mountain View office at 2400 Bayshore Parkway, with fewer than 50 employees to its name. Fifteen years later, it's the city's biggest employer. Though Microsoft, Symantec, Intuit, and LinkedIn each have a major presence in Mountain View, all are dwarfed by Google: in 2013, Google employed 9.7 percent of the city's entire workforce and owned 10.7 percent of all taxable property. In other words, Google represented one-tenth of Mountain View as of last year.

And it’s only getting bigger.