In which continent is Siberia located?

Even though being bigger in size than China ( 13.1 million km² ) it hosts only 33.77 million people.

Siberia falls into four major geographic regions, all of great extent. In the west, abutting the Ural Mountains, is the huge West Siberian Plain, drained by the Ob and Yenisey rivers, varying little in relief, and containing wide tracts of swampland. East of the Yenisey River is central Siberia, a vast area that consists mainly of plains and the Central Siberian Plateau. Farther east the basin of the Lena River separates central Siberia from the complex series of mountain ranges, upland massifs, and intervening basins that make up northeastern Siberia (i.e., the Russian Far East). The smallest of the four regions is the Baikal area, which is centred on Lake Baikal in the south-central part of Siberia.

Siberia, Russian Sibir, vast region of Russia and northern Kazakhstan, constituting all of northern Asia. Siberia extends from the Ural Mountains in the west to the Pacific Ocean in the east and southward from the Arctic Ocean to the hills of north-central Kazakhstan and the borders of Mongolia and China.