http://411mania.com/movies/setting-for-the-walking-dead-spin-off-revealed/

According to TV Line, the setting for The Walking Dead spin-off will be Los Angeles. The pilot is scheduled to be shot in early 2015.

The Walking Dead spin-off series will, “shed light on a new, previously unseen corner of the zombie apocalypse, perhaps one where the living outnumber the undead.” It has also been reported that the series will be a prequel of sorts, which would chronicle the early days of the epidemic and the effort to contain it.