It has a long history of rebellions and clashes with regional rulers or occupying foreign forces.

[6] The people residing in Chalus speak western dialect of Mazanderani language.

Tapuris were made to migrate to the south coast of the Caspian Sea during the Achaemenid dynasty.

[11][12] The eastern Gilaki is spoken in the entire valley of the Čālūs river, though some Kurdish tribes were established in the yeylāq of Kojūr and Kalārdašt in the Qajar period.

Chalus is a major vacation destination for Iranians during holidays for its nice weather and natural attractions.

The Taliesin Associated Architects (Frank Lloyd Wright Foundation) had three buildings built in Iran, one of which was the summer residence of Shams Pahlavi known as Mehrafarin Palace in Chalus (presently occupied by the local police).