Fort Nelson, BC, population centre, population 3,366 (2016 census), 3,561 (2011 census). Fort Nelson is the service centre for the Northern Rockies Regional Municipality (NRRM). The NRRM is made up of a number of communities, of which Fort Nelson is the largest. Fort Nelson is located in the northeast corner of British Columbia, near the confluence of three rivers: Muskwa, Prophet and Sikanni Chief. Together these rivers combine to become the Fort Nelson River. The community is 387 km north of Fort St. John. It was named after British Admiral Horatio Nelson, famous for the Battle of Trafalgar. Incorporated as a town in 1987, Fort Nelson became a part of the NRRM in 2009.