Exeter is a town in Washington County, Rhode Island, United States. Exeter extends east from the Connecticut border to the town of North Kingstown. It is bordered to the north by West Greenwich and East Greenwich, and to the south by Hopkinton, Richmond, and South Kingstown. Exeter's postal code is 02822, although small parts of the town have the mailing address West Kingston (02892) or Saunderstown (02874). The population was 6,460 at the 2020 census.

Washington County, known locally as South County, is a county located in the U.S. state of Rhode Island. As of the 2020 census, the population was 129,839. Rhode Island counties have no governmental functions other than as court administrative boundaries, which are part of the state government.