Islesboro is a Penobscot Bay island town in Waldo County, incorporated on January 28, 1789 from Long Island Plantation.
The early native name for the main island was Pitaubegwimenahanuk, or the island that lies between two channels. In fact, the island is the marker for dividing East Penobscot Bay from West Penobscot Bay.
It includes North and South Islesboro connected by a narrow segment of land, Seven Hundred Acre Island, Job Island, Warren Island and others. Warren hosts a state park with a dock for visiting boats.
Settled in 1769, it was part of the Waldo Patent. In 1812 as the British occupied Castine to the east, Islesboro was effectively neutralized.
Home to many harbors, coves and seasonal residences, the town is accessible by ferry from Lincolnville three miles to the west.
