Brewster is governed by the open town meeting form of government, led by an executive secretary and a board of selectmen. The town has its own police and fire departments. The fire department is located on Route 6A near the terminus of Route 137, while the police station is located about a half mile away on Route 124. There is a single post office near the geographic center of town, as well as the Brewster Ladies' Library, a 50,000-volume library which is a part of the Cape Libraries Automated Materials Sharing (CLAMS) library network. The Long Pond Medical Center, located just over the Harwich line at the intersection of Routes 6 and 137, serves the medical needs of the town, as well as the southeastern corner of the Cape.