The city is located east of Rimouski near the south shore of the Saint Lawrence River.

In 1867, the main condition for New Brunswick and Nova-Scotia entering into the Canadian Confederation was, to be linked to the rest of the country by the railway.

However, this village, because of its rugged landscape, was not suitable to receive the train station and maintenance shops.

The engineers turned to the higher 2nd farming rank of Sainte-Flavie, and the train station was named Sainte-Flavie-Station.

[7] Mont-Joli is the easternmost end of Autoroute 20, whose segment connects with the city of Rimouski.