Osa is a town in Perm Krai, Russia, located on the left bank of the Kama River near its confluence with the Tulva, 146 km southwest of Perm. Population: 23,452 (2002 Census); 24,132 (1989 Census).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.
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