Lincolnville is a town in Waldo County, Maine, United States. The population was 2,312 at the 2020 census. Lincolnville is the mainland terminal for Maine State Ferry Service transport to Islesboro.

Waldo County is a county in the state of Maine, United States. As of the 2020 census, the population was 39,607. Its county seat is Belfast. The county was founded on February 7, 1827, from a portion of Hancock County and named after Brigadier-General Samuel Waldo, proprietor of the Waldo Patent.