Edmundston (ED-muhn-stuhn), city (1991 pop. 10,835), NW N.B., Canada, at the confluence of the St. John and Madawaska rivers, at the U.S. border; 47°22'N 68°20'W. Large pulp mill; RR center; hunting and fishing base. Col. of St. Louis is here. Settled c.1785 by Acadians; known as Petit Sault to the French and Little Falls to the English before being named in 1850 for Sir Edmund Head, later gov. gen. of Canada.