Kharkiv, also known as Kharkov, is the second-largest city in Ukraine. Located in the northeast of the country, it is the largest city of the hist…Kharkiv, also known as Kharkov, is the second-largest city in Ukraine. Located in the northeast of the country, it is the largest city of the historic region of Sloboda Ukraine. Kharkiv is the administrative centre of Kharkiv Oblast and Kharkiv Raion. On the eve of Russia's full-scale invasion of Ukraine in February 1922 it had an estimated population of 1,421,125.