The trend is indicative of the growing use of mobile devices.
Mayer spoke at the TechCrunch Disrupt conference, being held this week in New York, where she was interviewed by TechCrunch founder Michael Arrington.
As head of location and local services, Mayer oversees the company's geospatial offerings such as Google Maps.
The Google Maps app has been installed on 200 million mobile devices, Mayer said. People use the app to get directions to a desired location, as well as to orient themselves with their surroundings.