This past year, our former Flagstaff satellite chapter was chartered as the Grand Canyon Chapter, MOAA. The previous NACMOAA assigned zip codes and area was divided between us and them. NAC now covers about 24,000 square miles and includes the area south of Interstate Hwy 40, southward to just north of Phoenix, On the west side, our area runs west of Hwy 93 from the Nevada state line to just south of Bullhead City AZ.