Because of its contiguousness with Terrace along the Highway 16 corridor, many visitors and newcomers to the area consider Thornhill a part of Terrace. However that is now changing that signs are going up identifying Thornhill as a vibrant community with 5000+ residents.Its government is an electoral director's seat on the Kitimat–Stikine Regional District board.There have been discussions about developing a more independent system of local government in Thornhill (i.e. Incorporation) or amalgamating with the larger City of Terrace.RD of Kitimat–Stikine Minutes September, 2005 p.5
