[1] Upon establishment, Alexandrovsky, Belokamensky, Gryazno-Gubsky, Toros-Ostrovsky, Tyuva-Gubsky, and Ura-Gubsky Selsoviets of the former Alexandrovskaya Volost were included into the district.
[7] After the Winter War of 1939–1940, the western parts of the Rybachy and Sredny Peninsulas were ceded by Finland to the Soviet Union by the Moscow Peace Treaty.
[8] By the July 13, 1940 Decision of the Murmansk Oblast Executive Committee, these territories were appended to Polyarny District.
[7] On April 18, 1951, the work settlement of Vayenga was elevated in status to that of a town under oblast jurisdiction and renamed Severomorsk.
[8] On April 26, 1951, by the Decision of Murmansk Oblast Executive Committee, several inhabited localities of Polyarny District were passed into its jurisdiction.