Unidentified Safe-zone

The Unidentified Safe-zone is a safe-zone mentioned by Mia Towen in Better Days Ahead. It is a safe-zone city located somewhere in West United States that is not in California, Colorado or Utah. As of 2031, the city is the last safe-zone and human-inhabited location in North America with electricity.

Biography
On the biography of the story, it mentions the Schroder family also advancing toward the city after the fall of their farm. Due to the confirmed locations of Season 2, Season 3 and the latter half of Season 5; it can only be concluded that the city is not located within California, Colorado or Utah. Season 4 and the first half of Season 5's location is yet to be revealed.

"Expiration..."
On Season 1, Chapter 11; Mia mentions the city being West. On the same chapter, she mentions the family having been in Kentucky as of recently, implying that the city is not within Arizona or New Mexico, though due to the placement of Wichita; this is neither confirmed or unconfirmed. If this is confirmed, the city most likely also uses the regional term of 'Shuteye'.

"Puny Flames For Their Pygmy Wit"
On Season 2, Chapter 2; more information toward the city and its location are revealed.