Banteay Meanchey is a province of the Kingdom of Cambodia located in the northwest of one of the most important economies of the country. It borders Oddar Meanchey and Siem Reap to the east, Battambang to the south and a common international border with Thailand to the west. The largest provincial capitals and cities are Serei Sophorn and [[Poipet]]. Banteay Meanchey is the 13th largest province of the Kingdom of Cambodia. With a population of 678,033, it ranks as the 10th largest province in the country. The province has two municipalities, Serei Sophorn and Poipet, in the western part of the province, which is the international border crossing into Thailand. Banteay Meanchey is one of the nine provinces that are part of the Tonle Sap Biosphere Reserve.