There are four details that a region would obviously have in the apocalypse: Infection Rate, Cure Status, Infection Status, and Zombie Border Control. What is your region's Infection Status?
Here in the United States of Pavonistade, the Infection Rate is -286.3, clearly making the region a Safe Haven. The main region (Sunalaya) is also a Safe Haven, although the value is -107.9. Finally, Esquarium has an Infection Rate of -20.9 and is Relatively Safe.