In January 1979, the Soviet Union conducted its first census in nine years (since 1970). Between 1970 and 1979, the total Soviet population increased from 241,720,134 to 262,084,654, an increase of 8.42%.
As in 1970,Russians, Ukrainians, Uzbeks, and Belarusians were the largest ethnic groups in the Soviet Union in 1979. Specifically, there were 137,397,089 Russians, 42,347,387 Ukrainians, 12,455,978 Uzbeks, and 9,462,715 Belarusians living in the Soviet Union in 1979. Meanwhile, the largest SSRs in the Soviet Union by population in 1979 were the Russian SFSR (with 137.6 million inhabitants), the Ukrainian SSR (with 49.8 million inhabitants), the Uzbek SSR (with 15.4 million inhabitants), the Russian-pluralityKazakh SSR (with 14.7 million inhabitants), and the Byelorussian SSR (with 9.6 million inhabitants).
The Tajik SSR, Uzbek SSR, and Turkmen SSRs were the fastest-growing SSRs between 1970 and 1979. During this time, the Tajik SSR grew by 31% while the Uzbek SSR grew by 30% and the Turkmen SSR grew by 28%. Overall, other parts of the Caucasus and Central Asia also experienced large growth between 1970 and 1979 while the slowest-growing SSRs during this time were the Russian SFSR, the Ukrainian SSR, and the Byelorussian SSR (all of which only grew by 6% between 1970 and 1979).
Between 1970 and 1979, the Soviet Union become more urban, with 62% of its total residents living in urban areas in 1979 in comparison to 56% in 1970. Indeed, there were 18 cities in the Soviet Union with over one million residents in 1979 (in comparison to 10 such cities in 1970). In addition to this, the male to female ratio also increased between 1970 and 1979. Indeed, while males only made up 46.1% of the Soviet Union's total population in 1970 (due to the continuing legacy of the extremely massive Soviet casualties in World War II, this figure increased to 46.7% by 1979.