Ilambazar is a community development block that forms an administrative division in Bolpur subdivision of Birbhum district in the Indian state of West Bengal.

Birbhum district is an administrative unit in the Indian state of West Bengal. It is the northernmost district of Burdwan division—one of the five administrative divisions of West Bengal. The district headquarters is in Suri. Other important cities are Bolpur, Rampurhat and Sainthia. Jamtara, Dumka and Pakur districts of the state of Jharkhand lie at the western border of this district; the border in other directions is covered by the districts of Bardhaman and Murshidabad of West Bengal.