Portland was the largest city in Oregon. In 2010, it was home to 583,776 inhabitants.
Portland was a large city, which made it impossible for any gang or militia to overtake it. Several small, violent factions roamed the streets, some more malicious than others.
Romello- Romello had lived in Portland with his parents until the epidemic hit. He remained there for a month, hidden in the safety of his house.
John- John had grown up in Portland, and hated it. He tried to join one of the gangs after the epidemic, but was rejected.