Northern Krai
In 1929, several governorates were merged into Northern Krai. On July 15, 1929, the uyezds were abolished and Pinezhsky District was established. Pinezhsky District became a part of Arkhangelsk Okrug of Northern Krai. At the same time, Karpogorsky District, with the administrative center in the "selo" of Karpogory, was established. In 1959, Karpogorsky and Pinezhsky Districts were merged into one district with the administrative center located in Karpogory.