The Republic of Khakassia (Russian: Респу́блика Хака́сия, Respublika Khakasiya; Khakass: Хакас Республиказы, Xakas Respublikazı) or Khakasiya (Хака́сия) is a federal subject of Russia (a republic). Its capital city is Abakan, which is also the largest city in the republic. As of the 2010 Census, the republic's population was 532,403.

The republic is located in the southwestern part of Eastern Siberia and borders Krasnoyarsk Krai in the north and east, the Tuva Republic in the southeast and south, the Altai Republic in the south and southwest, and Kemerovo Oblast in the west and northwest. It stretches for 460 kilometers (290 mi) from north to south and for 200 kilometers (120 mi) from east to west. Mountains (eastern slopes of Kuznetsk Alatau and the Abakan Range) cover two thirds of the republic's territory and serve as the natural boundaries of the republic. The remaining territory is flat, with the Minusinsk Hollow being the most prominent feature. The Yenisei is the largest river in the republic. Other significant rivers include the Abakan, the Tom, and the Chulym. There are over three hundred lakes in the republic, both salt- and fresh-water. Climate is continental, with the average annual temperature of 0 °C (32 °F). Natural resources are abundant and include iron, gold, silver, coal, oil, and natural gas. Molybdenum deposits are the largest in Russia. Forests cover the south and the west of the republic.

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