"More then 2,100 people from 300 families are all dead," Naweed Forotan, a spokesman for the Badakhshan provincial governor, said.
The United Nations said the focus was now on the more than 4,000 displaced by Friday's disaster. There is a risk of further landslides in the area, officials say.
Provincial officials said that two successive landslides hit Aab Bareek village within one hour.
Villagers were at Friday prayers in two mosques when they were entombed by a tide of debris, and the second landslide hit many who had rushed to assist those in need.