Krasnodar is the largest city and the administrative centre of Krasnodar Krai, Russia. The city stands on the Kuban River in southern Russia, …Krasnodar is the largest city and the administrative centre of Krasnodar Krai, Russia. The city stands on the Kuban River in southern Russia, with a population of 1,121,291 residents, and up to 1.226 million residents in the Urban Okrug. In the past decade Krasnodar has experienced rapid population growth, rising to become the thirteenth-largest city in Russia, and the second-largest city in southern Russia, as well as the Southern Federal District.