The territory of the modern district was originally settled by
Karelians around the 1st century CE. It was a part of the
Kievan Rus' from the 9th to 12th century. After that, it was a part the
Novgorod Republic. Most Karelians were converted to the Russian Orthodox faith during Russian rule. Russians built the fortress of
Korela, which was a nucleus of modern
Priozersk. The territory passed hands many times during the 16th and 17th centuries between Russians and Swedish, until it was finally claimed by Russians in 1711 during the
Great Northern War. During Swedish rule in the area, the town was known by its Swedish name
Kexholm, which in Russian became
Keksgolm. On May 16, 1940,
Rautovsky District with the administrative center in the
suburban settlement of
Rautu was also established. It was a part of Leningrad Oblast. On October 1, 1948, the district was renamed Sosnovsky and on January 13, 1949, all localities whose names originated in Finnish were renamed using Russian names. In particular, Rautu was renamed
Sosnovo. On December 9, 1960, Sosnovsky District was abolished and split between
Roshchinsky and Priozersky Districts. ==Economy==