Abakan is the capital city of Khakassia, Russia, located in the central part of the Minusinsk Depression, at the confluence of the Yenisei and Ab…Abakan is the capital city of Khakassia, Russia, located in the central part of the Minusinsk Depression, at the confluence of the Yenisei and Abakan Rivers. As of the 2010 Census, it had a population of 165,214—a slight increase over 165,197 recorded during the 2002 Census and a further increase from 154,092 recorded during the 1989 Census.