Madhesh Province is a province of Nepal in the Terai region with an area of 9,661 km2 (3,730 sq mi) covering about 6.5% of the country’s total area. It has a population of 6,126,288 as per the 2021 Nepal census, making it Nepal’s most densely populated province and the smallest province by area. It borders Koshi Pradesh to the east and the north, Bagmati Province to the north, and India’s Bihar state to the south and the west.