Boothbay Harbor is a town in Lincoln County, Maine, United States. The population was 2,165 at the 2010 census. During summer months, the entire Boothbay Harbor region is a popular yachting and tourist destination. ZIP Code is 04575. The community is served by the 633 exchange in Area Code 207.
According to the United States Census Bureau, the town has a total area of 9.22 square miles (23.88 km2), of which, 5.70 square miles (14.76 km2) of it is land and 3.52 square miles (9.12 km2) is water. Boothbay Harbor is located on a peninsula in the Gulf of Maine, part of the Atlantic Ocean.