Brook trout are native to most of Quebec, Newfoundland, Labrador, New Brunswick, Nova Scotia, and much of Ontario in Canada. In the United States, they are native to the Great Lakes region, New England, and south along the Appalachian Mountain Range to northern Georgia.
As salmonids go, they have a large and varied native range.
Maine is home to the widest diversity of brook trout in the nation.
LINK (via Bangor Daily News)