The German minority population in Russia, Ukraine, and the Soviet Union stemmed from several sources and arrived in several waves. Since the second half of the 19th century, as a consequence of the Russification policies and compulsory military service in the Russian Empire, large groups of Germans from Russia emigrated to the Americas (mainly Canada, the United States, Brazil and Argentina), where they founded many towns. During World War II, ethnic Germans in the Soviet Union were persecuted and many were forcibly resettled to other regions such as Central Asia. In 1989, the Soviet Union declared an ethnic German population of roughly two million. By 2002, following the collapse of the Soviet Union in 1991, many ethnic Germans had emigrated (mainly to Germany) and the population fell by half to roughly one million. 597,212 Germans self-identified as such in the 2002 Russian census, making Germans the fifth-largest ethnic group in the Russian Federation. There were 353,441 Germans in Kazakhstan and 21,472 in Kyrgyzstan (1999); while 33,300 Germans lived in Ukraine (2001 census).
Emigrants from Germany first arrived in Kievan Rus during the reign of Olga of Kiev. The Germans of Russia did not necessarily speak Russian; many spoke German, while French was often used as the language of the high aristocracy. Depending on geography and other circumstances, many Russian Germans spoke Russian as their first or second language. The large numbers of farmers and village tradesmen who arrived following Catherine the Great's invitation were allowed to settle in German-only villages and to keep their German language, religion, and culture until the 1920s.