Sakhalin Oblast is a federal subject of Russia comprising the island of Sakhalin and the Kuril Islands in the Russian Far East. The oblast has an area of 87,100 square kilometers. Its administrative center and largest city is Yuzhno-Sakhalinsk. As of the 2021 Census, the oblast has a population of 466,609.
The vast majority of the oblast's residents are ethnic Russians, with a small minority of Sakhalin Koreans. Sakhalin Oblast is rich in natural gas and oil, and is Russia's second wealthiest federal subject after the Tyumen Oblast. It borders by sea Khabarovsk Krai to the west and Kamchatka Krai to the north, along with Hokkaido, Japan to the south. From Wikipedia
