Northern Krai
In 1929, several governorates were merged into Northern Krai. July 15, 1929 the uyezds were abolished, and Pinezhsky District was established. Pinezhsky District became a part of the Arkhangelsk Okrug of the Northern Krai. In 1930, the Okrug was abolished, and the district became subordinate to the central administration of the Northern Krai. In 1936, the Krai was transformed into Northern Oblast. In 1937, Northern Oblast was split into Arkhangelsk Oblast and Vologda Oblast. Then, in 1959, Karpogorsky and Pinezhsky Districts were merged into one district with the administrative center located in Karpogory.