Winterport is a town in Waldo County, Maine, United States.

[4] It was named Winterport because of its fine harbor on the Penobscot River estuary, which generally remained ice free, and so became a busy local terminus for trade and shipping during winter months.

When the upper Penobscot River froze, commodities like flour were hauled in large quantities from here to Bangor.

[5] In 1841, Theophilus Cushing opened a large steam mill which manufactured 11,000,000 feet of lumber annually.

Other industries produced harnesses, cheese and butter, and men's vests.

It borders the towns of Frankfort to the south, Monroe to the west, and Hampden and Newburgh to the north.

Bucksport lies across the Penobscot River to the east which prior to the opening of the Waldo-Hancock Bridge in 1931 was reached from Winterport by way of the Winterport Ferry Co. As of the census[8] of 2010, there were 3,757 people, 1,503 households, and 1,100 families living in the town.

20.0% of all households were made up of individuals, and 6.5% had someone living alone who was 65 years of age or older.