Irkutsk Oblast (Russian: Ирку́тская о́бласть, Irkutskaya oblast) is a federal subject of Russia (an oblast), located in southeastern Siberia in the basins of Angara River, Lena, and Nizhnyaya Tunguska Rivers. The administrative center is the city of Irkutsk. Population: 2,428,750 (2010 Census).
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