Bath is a city in Sagadahoc County, Maine, in the United States. As of the 2000 census, the city population was 9,266. It is the county seat of Sagadahoc County. Located on the Kennebec River, Bath is a port of entry with a good harbor. The city is popular with tourists, many drawn by its 19th-century architecture. It is home to the Bath Iron Works and Heritage Days Festival, held annually on the Fourth of July weekend.
Bath is part of the Portland–South Portland–Biddeford, Maine metropolitan statistical area.
Abenaki Indians called the area Sagadahoc, meaning "mouth of big river." It was a reference to the Kennebec River, which Samuel de Champlain explored in 1605. Popham Colony was established in 1607 downstream, together with Fort St. George. The settlement failed due to harsh weather and lack of leadership, but the colonists built the New World's first oceangoing vessel constructed by English shipwrights, the Virginia of Sagadahoc. It provided passage back to England.