Chalsa (also known as Chalsa Mahabari) is a census town in the Matiali CD block in the Malbazar subdivision of the Jalpaiguri district in West Bengal, India.

Chalsa is located at 26°53′N 88°47′E / 26.88°N 88.78°E / 26.88; 88.78. It has an average elevation of 163 metres (535 feet).

It situated at the foot of the Himalayas in the Duars. This small town is surrounded by hills, tea gardens, rivers and forests. One part of the town is surrounded by Gorumara National Park and other part with Chapramari Wildlife Sanctuary. Nearby forests are residence of a good collection of elephants and rhinos. It is situated on the way towards Birpara or Alipurduar from Siliguri via Malbazar. It takes around 1.5 hours from Siliguri both on road and railways. It is 60 km from Bagdogra airport.

According to the map of the Matiali CD block on page 165 in the District Census Handbook, Jalpaiguri, 2011 census, Chalsa Mahabari is shown as being the headquarters of the block and Matiali police station is shown as being located in Chalsa Mahabari.

Gorumara National Park has overtaken traditionally popular Jaldapara National Park in footfall and Malbazar has emerged as one of the most important towns in the Dooars. Malbazar subdivision is presented in the map alongside. It is a predominantly rural area with 88.62% of the population living in rural areas and 11.32% living in the urban areas. Tea gardens in the Dooars and Terai regions produce 226 million kg or over a quarter of India's total tea crop. Some tea gardens were identified in the 2011 census as census towns or villages. Such places are marked in the map as CT (census town) or R (rural/ urban centre). Specific tea estate pages are marked TE.

Note: The map alongside presents some of the notable locations in the subdivision. All places marked in the map are linked in the larger full screen map.

Mitiali police station has jurisdiction over the Matiali CD block.

The headquarters of the Matiali CD block are located at Chalsa Mahabari.