Alternate reality
Earth Sector 49 was a region of planet Earth in the alternate 2259. This sector included a portion of the San Francisco Metropolitan Area.
The sector was mentioned in the subtitle of a map of the bay, which was in a collection of graphics and video media that were seen on a powerwall in the offices of Christopher Pike and Alexander Marcus at Starfleet Headquarters. (Star Trek Into Darkness)
The map is visible in the video "Star Trek: Into Darkness" – User Interface VFX at vimeo.com. [1]