It is named after Masketsi Lake that is located within its boundaries. This name first appeared on a map from 1870 by Eugène-Étienne Taché and is of Amerindian origin meaning "moccasin".[4]
In 2004, Lac-Masketsi was reduced in size by some 90 square kilometres (35 sq mi) when portions were annexed by mostly Trois-Rives (70 km²) as well as Lac-aux-Sables (20 km²).
Economy
The economy of this unorganized territory is mainly focused on forestry, resorts and tourist activities. This area is mostly forest and has many mountainous areas.