The Chitwan District (Nepali: चितवन जिल्ला Listen  is one of 75 Districts of Nepal, and is located in the southwestern part of Narayani Zone with Bharatpur, the fifth largest city of Nepal, as its district headquarters. It covers an area of 2,238.39 km² (864.25 sq mi), and in 2011 had a population of 579,984 (279,087 male and 300,897 female) people.