Mechanic Falls is a town in Androscoggin County, Maine, United States. The population was 3,031 at the 2010 census. It is included in both the Lewiston-Auburn, Maine metropolitan statistical area and the Lewiston-Auburn, Maine metropolitan New England city and town area.
It was originally part of Bakerstown Plantation, granted in 1765 by the Massachusetts General Court to Captain Thomas Baker and other soldiers for their services in the 1690 Battle of Quebec. In 1795, Bakerstown Plantation was incorporated as Poland, from which Minot would be set off in 1802. The dividing line between the towns was the Little Androscoggin River, astride which developed the village of Mechanic Falls. The Poland section of Mechanic Falls was settled in 1830, the Minot in 1836 by Dean Andrews, who was drawn by its fine soil for farming and water power for mills at the falls. Named for the mechanics operating early industrial works here, Mechanic Falls developed into a small mill town, especially after the St. Lawrence and Atlantic Railroad arrived in the late 1840s. The railroad opened the village to business and trade on the direct line between Portland and Montreal.
In 1850, the first paper mill was established.