Chitwan District is one of 77 districts of Nepal, and takes up the southwestern corner of Bagmati Province. Bharatpur, largest city of Nepal after Kathmandu, is its administrative centre. It covers 2,238.39 km2 (864.25 sq mi), and in 2011 had a population of 579,984 people. Bharatpur is the commercial and service centre of South Central Nepal and a major destination for higher education, health care and transportation in the region. Chitwan lies in the Terai region of Nepal. It is in the drainage basin of the Gandaki River and is roughly triangular, taking that river as its meandering northwestern border, and a modest watershed border, with India, as the basis of its southern limit. Local government: Bharatpur Metropolitan, Rapti Municipality, Ratnanagar Municipality, Kalika Municipality, Khairahani Municipality, Madi Municipality, Ikshyakamana Gaupalika

Bagmati Province is one of the seven provinces of Nepal established by the constitution of Nepal. Bagmati is Nepal's second-most populous province and fifth largest province by area. It is bordered by Tibet Autonomous Region of China to the north, Gandaki Province to the west, Koshi Province to the east, Madhesh Province and the Indian state of Bihar to the south. With Hetauda as its provincial headquarters, the province is also the home to the country's capital Kathmandu, is mostly hilly and mountainous, and hosts mountain peaks including Gaurishankar, Langtang, Jugal, and Ganesh.