Manchester is a town located in the Washington region of the United States. During the most recent census, Manchester had a population of 5,413. Manchester is the 165th most poplulated city in the Washington region, the 5,987th most populated city in the United States and the 28,867th most populated city in the world. Manchester is in the America/Los Angeles timezone which is 7 hours behind UTC. Manchester adjusts the hour with daylight savings time during the winter months.