Champhai district is one of the eleven districts of Mizoram state in India. The district is bounded on the north by Churachandpur district of Manipur state, on the west by Saitual and Serchhip districts, and on the south and east by Myanmar. The district occupies an area of . Champhai town is the administrative headquarters of the district. Champhai district has a moderate climate. In winter the temperature varies from 0 °C to 20 °C and in summer, the temperature varies between 15 °C and 30 °C. Manipur is situated to the north of this district, Aizawl district and Serchhip district to the west and Myanmar to the south and east. The district is divided into four tehsils: Khawzawl, Khawbung, Ngopa, and a portion of East Lungdar tehsil. It has two Rural Development Blocks: Champhai and Khawbung. The district has five Legislative Assembly constituencies. These are Champhai North, East Tuipui, Lengteng, Tuichang, and Champhai South. There are eighty-eight inhabited villages in this district, seventy-six of which are revenue villages. According to the 2011 census Champhai district has a population of 125,745, roughly equal to the nation of Grenada. This gives it a ranking of 610th in India (out of a total of 640). The district has a population density of . Its population growth rate over the decade 2001-2011 was 16.01%. Champhai has a sex ratio of 984 females for every 1000 males, and a literacy rate of 95.91%. In 1991 Champai district became home to Murlen National Park, which has an area of . It is also home to the Lengteng Wildlife Sanctuary, which was established in 1999 and has an area of .