Pune, formerly known as Poona, is one of the most important industrial and educational hubs of India, with an estimated population of 7.4 million as of 2020. Pune is considered to be the cultural and educational capital of Maharashtra state. It has been ranked "the most liveable city in India" several times. Together with the municipal corporation areas of Pimpri-Chinchwad (PCMC) and Pune (PMC), and the three cantonment towns of Camp, Khadki, and Dehu Road, Pune forms the urban core of the eponymous Pune Metropolitan Region (PMR). As of 2021, with an area of 7,256 sq km, PMR is geographically the largest metropolitan region in Maharashtra state and 5th largest in India.