Originally, the province was subdivided into 2 districts - Mambang and Thung Wa - and the minor district (King Amphoe) La-ngu. Due to the decline of pepper production in Thung Wa district, in 1930 the government made Thung Wa a minor district and instead declared La-ngu a district. In 1939 Mambang was renamed to Mueang Satun. Khuan Kalong was split off from Mueang district in 1969, from which in turn Tha Pae was split in 1976 and Manang in 1996. In 1973 Thung Wa regained district status. Khuan Don was established in 1975 by splitting it from Mueang district.