The trace of Satun province's history did not exist prior and during the Ayutthaya era. It is assumed that the city of Satun did not exist in that era, resumable only small villages scattered along the coastal plain.
In the early Rattanakosin era, Satun is only one district in the city of Kedah, therefore, the history of Satun province is related to the background of the city of Kedah. As appeared in the royal Rattanakosin chronicle of King Rama II: "According to the existing contents, it appears that during that era, the city of Kedah seemed to be divided into two groups; those of Chao Praya Sai Pangae's people and those of Praya Apaianurat, who might have bowed to the city of Nakhon Si Thammarat. Especially when Praya Apaianurat took the position of governing the city of Satun, where its boarders are connected to Nakhon Si Thammarat, those people of Satun might have been more connected with those of Nakhon Si Thammarat than of city of Kedah, but Praya Apaianurat governed the city of Satun for only 2 years before he passed away. The record of the successor for his position of governing the city of Satun was nowhere to be found, however, considered the followed occurrences, the royal family of Praya Apaianurat (Passanu) might have governed the city of Satun and obeyed with intimacy with the city of Nakhon Si Thammarat, just like in the era of Praya Apaianurat, or even more."
The story of the city of Satun also appears in the city chronicle of Songkhla, where the name of the governor of Satun city recorded was however different than of that in the royal Rattanakosin chronicle of King Rama III. The History of Satun regarding the formation of the governance, under the monarchy of the province in 1897, he graciously ordered to keep the city of Kedah, Perlis and the city of Satun as cities of sanctuary called "the County of Kedah". He graciously promoted Chao Praya Saiburi Rammaphakdee, Chao Praya Saiburee (Abdul Hamit), to the civil servant of Kedah city. The city of Satun is completely separated from the city according to the Thai and English treaties on the delimitation of the Tahi-Malaya border, which was signed in Bangkok on March 10, 127 AD (B.E. 2452). This agreement puts Kedah and Perlis under the reign of England, and Satun remained under the reign of Thailand until today.
After the border demarcation was completed, he had the royal announcement to include the city of Satun as a commodore in the county of Phuket on August 6, AD 128 (1910).
In 1932, Thailand changed its regiment into democracy, hence the city of Satun was promoted on of the provinces in the Kingdom of Thailand from then onward.
The word "Satun" originated from the Malayan "Stoy", means Santol, a type of fruit grown widely in the area of this city, which was later codenamed in Malayan as "Negeri Setoi Mumbang Segara" or translated into Thai as "Satun, the city of the ocean". So, the "seal of the sea" has become the seal or symbol of the province until today.
Even in conjunction with Kedah at the beginning, Satun has always been a province included in Thailand. At the beginning, Satun was divided into 2 districts with 1 sub-district; Mumbung district, Thung Wa district and the sub-district of Langoo district, which are under the government of Thung Wa district. Later in 1939, the name of Mumbung district was changed to Muang district of Satun. As for Thung Wa district, a very prosperous in the past, many steamboats from overseas arrived to trade goods regularly. The main goods of Thung Wa district was "pepper", known among the foreigners as "Suu Kyi district". Later, in about 1914, the pepper cultivation of Thung Wa district was reduced. The foreigners, who came to trade, migrate back to their countries. The people in the area were also migrating to other places to find a place to make a living, in particular the Lagnoo sub-district, hence the rapid growth of the Lagnoo sub-district and in the contrary, Thung Wa district became quiet. Up until 1930, the government considered that the Lagnoo sub-district was well developed, with more density of population than Thung Wa sub-district, this sub-district thus has been declared to be a district of Lagnoo, called the Lagnoo district and the Thung Wa district became a sub-district of Thung Wa, called Thung Wa sub-district, under the governance of Lagnoo district. Later, in year 1973, the sub-district of Thung Wa was restored to the status of the district of Thung Wa.
Currently, Satun province is divided into 7 districts as follows:
1. Muang District of Satun
2. Lagnoo District
3. Kuan Kalong District
4. Thung Wa District
5. Kuan Dohn District
6. Tha Pae District
7. Manung District