Tadoussac's a village in Quebec, Canada. An important French trading post in the seventeenth century, it's the oldest continuously inhabited European settlement in Quebec, and the oldest surviving French settlement in the Americas. In 2005, its population was 857. Geography Tadoussac's located on the north shore of the St. Lawrence River, at its confluence with the Saguenay River. The cold, fresh water from the Saguenay and the warmer, salty water of the St. Lawrence, meet to create a rich mari… (More on Tadoussac)