Madrid is a former town, now a part of the unorganized territory of East Central Franklin, in Franklin County, Maine, United States. The population was 173 at the 2000 census. It was part of an extensive tract of land purchased from Massachusetts about 1790 by Jonathan Phillips of Boston, then acquired by his agent, Jacob Abbott from Wilton, New Hampshir…Madrid is a former town, now a part of the unorganized territory of East Central Franklin, in Franklin County, Maine, United States. The population was 173 at the 2000 census. It was part of an extensive tract of land purchased from Massachusetts about 1790 by Jonathan Phillips of Boston, then acquired by his agent, Jacob Abbott from Wilton, New Hampshire. First settled about 1807 or 1808, it was incorporated as a town in 1836 and named after Madrid, Spain. In 1854, it was the site of Maine's first gold strike.