In 1947, when India gained independence, the state of West Bengal was formed with 14 districts, as per partition plan of the then Bengal province of British India. The former princely state Koch Bihar joined as a district in 1950, and the former French enclave Chandannagore joined as part of the Hooghly district in 1954. The States Reorganisation Act of 1956 led to addition of Purulia district to the state and to enlargement of West Dinajpur district. Later, larger districts such as West Dinajpur, 24 Parganas and Midnapore were bifurcated. Till 24 June 2014 West Bengal was divided into 19 districts.