Watchung is a town located in the New Jersey region of the United States. During the most recent census, Watchung had a population of 5,801. Watchung is the 279th most poplulated city in the New Jersey region, the 5,743rd most populated city in the United States and the 27,890th most populated city in the world. Watchung is in the America/New York timezone which is 4 hours behind UTC. Watchung adjusts the hour with daylight savings time during the winter months.