Perkins Township (Swan Island) is an unorganized territory in Sagadahoc County, Maine, United States. Originally incorporated as the town of Perkins, it has been uninhabited since being abandoned by the 1940s. The township comprises Swan Island, Little Swan Island and some tidal flats - all within the Kennebec River between the towns of Richmond and Dresden, Maine.
The "Swan Island Historic District" (Perkins Township Historic District) comprises much of the township with 8 buildings, 5 structures and . Some of the buildings date to the 1750s. The district was added to the National Register of Historic Places in 1995.
The town of Perkins was incorporated in the mid-19th century and then disincorporated in 1918, becoming Perkins Township, its legal name. Its population was 0 at the 2010 census.
The township is managed by the Department of Inland Fish and Wildlife as the Steve Powell Wildlife Management Area. This web page provides information on public access - which is restricted. Swan Island is known for its abundant wildlife.