Mae Chai
Mae Chai is a small town and subdistrict in Mae Chai District, in Phayao Province, Thailand. It is the principal town in the district. The town is split with tambon Si Thoi. As of 2005, it has a population of 5,094 people. It is in the northwestern part of the province not far from the border with Lampang Province. It lies along National Road 1, and is connected by road to Phayao in the south. To the north along the highway are Pa Faek and then Mae Yen across into Chiang Rai Province. The tambon has 10 villages under its jurisdiction. It lies partly within Mae Puem National Park. Mae Chai River is the river running through the area.