Kalyan is a city located in the Thane district of Maharashtra state, India, situated on the banks of the Ulhas River within the Konkan division. It serves as a subdivision (Taluka) of the Thane district and is recognized as a founding city of the Mumbai Metropolitan Region.
The city is governed by the Kalyan-Dombivli Municipal Corporation (KDMC), which jointly administers both Kalyan and its neighboring township, Dombivli. This municipal corporation oversees the urban infrastructure and governance for these interconnected areas.