On July 15, 1929 the All-Russian Central Executive Committee issued a decree splitting Northern Krai (with the exception of the Komi-Zyryan Autonomous Oblast, which remain as a single unit with the seat in Ust-Sysolsk, and the islands of Vaygach, Kolguev, Matveyev, Novaya Zemlya, Solovetsky Islands, and Franz Josef Land) into five administrative districts (okrugs)[3]
Before the krai was established, the division of its constituent governorates mixed the old division inherited from the Russian Empire (uyezds) with the new one (districts, or raions). The same decree established the division of the krai into districts. All okrugs and the Komi-Zyryan Autonomous Oblast were divided into districts, and the Arctic ocean islands remained subordinate to the Krai executive committee.
In July 1930, the Okrugs were abolished. The Nenets Okrug became an autonomous unit, the Komi-Zyryan Autonomous Oblast remained intact, and the districts which were part of the four other Okrugs became directly subordinate to the krai government. By August 25, 1930, the krai consisted of[2]
Cities of Arkhangelsk and Vologda;
Nenets National District (consisting of Bolshezemelsky, Kanino-Timansky, and Pustozersky districts);
Islands in the Arctic Ocean and Solovetsky Islands.
Between 1930 and 1935 there were constant changes in the district configuration, some districts were abolished, established, and renamed. On February 10, 1934, Novaya Zemlya, Vaygach, and a number of smaller islands in the Barents and Kara Seas were moved to the Nenets National Okrug. By 1936, the krai included 65 districts.[2]
On March 5, 1936, Pechorsky Okrug which was a part of the Northern Krai was established. The Okrug included three districts, Izhemsky, Ust-Tsilemsky, and Ust-Usinsky, and a part of Troitsko-Pechorsky District. This was related due to the beginning of the coal mining in the north of what is now the Komi Republic.
According to the 1936 Soviet Constitution, Northern Krai was abolished, and its territory was divided between newly established Northern Oblast and Komi Republic. Northern Oblast included 54 districts and was in 1937 split into Arkhangelsk and Vologda Oblasts. Three of the districts of Northern Krai, Lalsky, Oparinsky, and Podosinovsky, as the result of some later administrative changes, ended up in Kirov Oblast. Pavinsky and Vokhomsky District were later transferred into Kostroma Oblast.