The Town of Randolph is a city in Norfolk County, Massachusetts, United States. As of the 2000 census, the town population was 30,963. The ZIP code of Randolph is 02368. Randolph adopted a new charter effective January 2010 providing for a council-manager form of government instead of the traditional town meeting. Although it retains the word "Town" in its official name, the council-manager form means that it is legally a city in Massachusetts.