Osa, Perm Krai
Osa () is a town and the administrative center of Osinsky District in Perm Krai, Russia, located on the left bank of the Kama River near its confluence with the Tulva, southwest of Perm, the administrative center of the krai. As of the 2010 Census, its population was 21,188. History. It was founded in 1591 (according to other sources—in 1596) as the "sloboda" of Novonikolskaya () and later became a fortress. In a 1623 document, the settlement is referred to as the "sloboda" of Osinskaya Nikolskaya (), in 1678—as the "sloboda" of Osinskaya (), in 1732—as the village  ("selo") of Osa. It was granted town status in 1739. In 1960, oil fields were discovered near Osa. Oil extraction started in 1963. Administrative and municipal status. Within the framework of administrative divisions, Osa serves as the administrative center of Osinsky District, to which it is directly subordinated. As a municipal division, the town of Osa, together with five rural localities, is incorporated within Osinsky Municipal District as Osinskoye Urban Settlement.