The Indo-Bangladesh enclaves, also known as the chitmahals (Bengali: ছিটমহল) are the enclaves along the Bangladesh–India border, in Bangladesh and the Indian state of West Bengal.
There are 102 Indian enclaves inside Bangladesh and 71 Bangladeshi ones inside India, with a combined population between 50,000 to 100,000. Inside those enclaves are also 28 counter-enclaves and one counter-counter-enclave, called Dahala Khagrabari.
In September 2011, the Prime Ministers of the two countries (Manmohan Singh of India and Sheikh Hasina of Bangladesh) signed an accord on border demarcation and exchange of adversely held enclaves. Under this agreement, the enclave residents may continue residing at their present location or move to the country of their choice.
Read more about Indo-Bangladesh Enclaves: History