Irkutsk Republic(Russian:Ирку́тская Республики Irkutskaya Respubliki) commonly Irkutsk is a federal subject(republic) of Lapland located within Siberia. Irkutsk is the second-largest federal subject in Lapland(after Krasnoyarsk Krai) and has the 10th largest population(with 10,537,678). The Administrative center is Irkutsk city.