马里人
The river originates in the coniferous forests of Kirov Oblast where the area is thinly populated by the Russians and Mari people. The main settlements on Kokshaga are Kiknur and Sanchursk in Kirov Oblast. The Mari El river passes through the Mari Depression, where mixed forests and swamps are situated. This area is also thinly populated and the Bolshaya Kokshaga nature reserve is located there. The Bolshaya Kokshaga flows to the Kuybyshev Reservoir, and then to the Volga near Kokshaysk, Mari El.