Kalyan is a part of the Thane District of Maharashtra state in Western India. It is also known for being the Mumbai region's exit station to North India and South India.Kalyan is within the administrative division (tahsil) at a taluka level of the Thane District. Kalyan and its neighbouring township of Dombivli jointly form the Kalyan Dombivli Municipal Corporation, abbreviated as KDMC. It is considered a part of the Mumbai Metropolitan Region, along with Vitthalwadi, Bhiwandi, Thane, Ulhasnagar and the municipal councils of Ambernath and Badlapur.