Hammerston City is the primary setting of The Pocalypse. It is divided into smaller settings, including New Hammerston, the survivor colony, and the Supermarket Base of Bernie and Jess. The Hospital in which Joe awakens in Chapter 1, Scene 1 is also located in Hammerston City.
According to Chapter 1, Scene 9, north of Hammerston City, across the northern bridge, is Greener Pastures, which is overrun with Plant Monsters. South of the city, across the southern bridge, is Machine City, which is occupied by Machines. East of the Supermarket Base is the survivor colony of New Hammerston. Vampires control the region east of New Hammerston. It is not known what is west of the city.