Houlton is a town in Aroostook County, Maine, on the United States – Canada border, located at . As of the 2010 census, the town population was 6,123. It is perhaps best known as being at the northern terminus of Interstate 95 and for being the birthplace of Samantha Smith, a goodwill ambassador as a child during the Cold War. The town hosts the annual Houlton Agricultural Fair.
Houlton is the county seat for Aroostook County, and as such its nickname is the "Shire Town." The Houlton High School sports teams are named "The Shiretowners." The Meduxnekeag River flows through the heart of the town, and the border with the Canadian province of New Brunswick is three miles east of the town's center. Houlton was the home of Ricker College which closed in 1978.