The fisher is found only in North America. Historically, it ranged the northern forests of Canada and the United States as well as forests in the Appalachian, Rocky and Pacific Coast Mountains. Today, fishers are found only in parts of their historic range. In the U.S., they exist in portions of the Appalachian Mountains from New England south to Tennessee; northern Wisconsin, Minnesota and Michigan’s upper peninsula; northern Idaho and western Montana; and three small West Coast populations in southwestern Oregon, northwestern California, and the southern Sierra Nevada. Reintroductions have led to their reoccupation of former habitats in Idaho, Michigan, Montana, Nova Scotia, Vermont, West Virginia, Maine, Manitoba, Minnesota, New York, Ontario and Tennessee.