Nan is a town in northern Thailand. It is 688 km north of Bangkok. It is in the centre of Nan province which bears its name, and of which it is the former administrative capital. It covers tambon Nai Wiang and parts of tambon Pha Sing of Mueang Nan district, an area of 7.60 km² divided into 30 chumchon. In 2010 it had a population of 21,333 spread along th…Nan is a town in northern Thailand. It is 688 km north of Bangkok. It is in the centre of Nan province which bears its name, and of which it is the former administrative capital. It covers tambon Nai Wiang and parts of tambon Pha Sing of Mueang Nan district, an area of 7.60 km² divided into 30 chumchon. In 2010 it had a population of 21,333 spread along the Nan River's right bank. Nan is a small city, primarily devoted to commercial, administrative, educational, and hospital activities. The old heart of the city, where Wat Phumin, the national museum and other tourist attractions are found, is being restored.