Newcastle is a town in Lincoln County, Maine, United States.

[2] The village of Newcastle is located in the eastern part of the town,[3] on the Damariscotta River.

Originally called Sheepscot Plantation, Newcastle was first settled in the 1630s by fishermen and around 50 families.

Renamed New Dartmouth, the plantation was attacked and destroyed in 1676 during King Philip's War.

But it was destroyed again in 1689 during King William's War, and the village was not reoccupied for about 40 years.

It includes 51 buildings in the Italianate, Greek Revival, and Federal styles, on 12,000 acres (49 km2).

(The USGS recognizes Sheepscott, Shepscooke, Shippscutt, and Shipscot as variants of the name Sheepscot.)

It borders the towns of Jefferson to the north, Edgecomb to the south, and Alna to the northwest.

26.4% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older.