Anak is bordered to the east by Chaeryŏng, to the south by Sinch'ŏn, to the west by Samch'ŏn and Ŭnryul and to the north by Ŭnch'ŏn.

1, 2, and 3 of Anak in Sangsan-ri, Daewon-myeon and Yusun-ri, Yongsun-myeon, which are famous for their murals, represent the level of culture of the Goguryeo period in the 4th century.

3 has a wall of 81 m2 and a ceiling of 58 m2 filled with various figures and genre paintings, depicting customs of Goguryeo as well as music and house structure.

Wang Geon's powers cooperated with Gung Ye to be incorporated into Taebong's territory around 905, and it is presumed that it was around this time that the name of the place was changed to Anak.

In 1259 (Gojong 46), it was invaded by the Mongol army and surrendered.In 1270, it became part of Dongnyeong prefectures, but was restored to its original subdivision after 8 years.

Administratively, in addition to the period from 1589 (the 22nd year of King Seonjo) to 1608, it went through several ups and downs of being demoted to a prefecture.

Kuwol, so in 1684 (the 10th year of King Sukjong's reign), Jungyeongjang (中營將), who had been stationed in Sincheon, was moved to Anak, and Junggun (中軍) was assigned to take on the duties of Toposa.

However, since then, agriculture has greatly developed, centering on rice and cotton cultivation, reclamation projects have been actively carried out, and trade with the Pyeongan Province has increased.