Settled before the American Revolution, Jonesport was part of a grant of made by the Massachusetts General Court in 1789 to John C. Jones and others. It was incorporated on March 4, 1809, as Jonesborough. On February 3, 1832, a portion of Jonesborough was set off and incorporated as Jones' Port. Then a portion of Jonesport was set off and incorporated on April 7, 1925, as the island town of Beals, accessible by bridge, built in 1958, across the Moosabec Reach.