New Brunswick is one of Canada's three Maritime provinces and is the only constitutionally bilingual province (English and French) in the federation. The provincial capital is Fredericton, while Saint John is the most populous city, and metropolitan Moncton is the largest census metropolitan area. The major river systems of the province include the St. Croix River, Saint John River, Kennebecasis River, Petitcodiac River, Miramichi River, Nepisiguit River, and the Restigouche River.