The new census announced the Soviet Union's population to be 208,826,650, an increase of almost forty million from the results of the last (disputed) census from 1939. A majority of this population increase was due to the Soviet territorial expansion of the 1939–1945 time period, rather than due to
natural population growth. The deficit of men to women in the total Soviet population massively increased between 1939 and 1959, in large part due to
World War II. The 1959 Soviet Union census reported populations in 126
nationality (
ethnic group) categories, in comparison to only 97 categories in the 1939 census.
Ethnic Russians still made up a majority of the Soviet population in 1959, The populations of the
Baltic Soviet Socialist Republics (which were heavily affected by World War II) did not change much between 1939 and 1959, with
Lithuania actually experiencing a population decline during this time period. During the same time, the population of the
Russian SFSR (which was heavily affected by World War II) increased by less than ten percent. The population increase in Ukraine and Byelorussia between 1939 and 1959 was completely or almost completely due to the Soviet territorial expansions of 1939–1940. Without these territorial expansions, Ukraine's population would have only barely increased and Belarus's population would have actually decreased between 1939 and 1959. The
Central Asian and
Caucasian Soviet Socialist Republics experienced large population increases between 1939 and 1959 despite the fact that they did not acquire any new territories during this time period. This census is also noteworthy as being the first census to classify
Brest Region population as Belorussians. ==City ranking==