Lincoln is a town in Penobscot County, Maine, United States. The population was 5,221 at the 2000 census. The town is named after Maine's sixth governor, Enoch Lincoln.
According to the United States Census Bureau, the town has a total area of 74.8 square miles (193.9 km²), of which, 67.9 square miles (175.9 km²) of it is land and 6.9 square miles (17.9 km²) of it (9.26%) is water. Lincoln is one of the Largest Townships East of the Mississippi River in the United States. Rollins Mountain is located in Lincoln.
As of the census of 2000, there were 5,221 people, 2,108 households, and 1,475 families residing in the town. The population density was 76.9 people per square mile (29.7/km²). There were 2,661 housing units at an average density of 39.2 per square mile (15.1/km²). The racial makeup of the town was 98.35% White, 0.10% Black or African American, 0.36% Native American, 0.40% Asian, 0.08% from other races, and 0.71% from two or more races. Hispanic or Latino of any race were 0.36% of the population.