The Kazakhstan–Russia border is the 6,846 kilometres (4,254 mi) border between the Russian Federation and the Republic of Kazakhstan. It is in the same location as formerly the administrative-territorial border between the RSFSR and Kazakh SSR. The modern shapes were acquired in 1930, and interstate status was set in 1993. In this case the boundary does not coincide with the territory of living of the peoples of the region. There are estimated to be 3,962,100 Russians in Kazakhstan, making about 23% of the population of Kazakhstan. Kazakhs and other ethnic groups (Germans, Tatars, and Ukrainians) also live on both sides of the border, but after gaining sovereignty, the proportion and number of non-titular ethnic groups on the Kazakh side declined rapidly.