Sochi is the largest resort city in Russia. The city is situated on the Sochi River, along the Black Sea in the North Caucasus of Southern Russia, with a population of 466,078 residents, and up to 600,000 residents in the urban area. The city covers an area of 176.77 square kilometers (68.25 sq mi), while the Greater Sochi Area covers over 3,502 square kilometers (1,352 sq mi). Sochi stretches across 145 kilometers (90 mi), and is the longest city in Europe, the fifth-largest city in the Southern Federal District, the second-largest city in Krasnodar Krai, and the sixth-largest city on the Black Sea.