Si Ma Cai District

Si Ma Cai is a rural district of Lào Cai Province in the Northeast region of Vietnam. As of 2003, the district had a population of 25,554. The district covers an area of 241 km². The district capital lies at Si Ma Cai. 
Administrative divisions.
Si Ma Cai, Thào Chư Phìn, Bản Mế, Sán Chải, Lùng Sui, Mản Thẩn, Cán Hồ, Sín Chéng, Lử Thẩn, Quan Thần Sán, Cán Cấu, Nàn Sín and Nàn Sán. 