Primorsky District
Another district established on May 16, 1940 was Koyvistovsky District with the administrative center in the town of Koyvisto (Koivisto). It was a part of Leningrad Oblast. On October 1, 1948, the district was renamed Primorsky and on January 13, 1949, all localities whose names originated in Finnish were renamed using Russian names. In particular, Koyvisto was renamed Primorsk. On April 3, 1954, Primorsky District was abolished and merged into Roshchinsky District.