Religion in Ukraine
As of 2018, according to a survey held by the Razumkov Center, 71.7% of the total respondents declared to be believers, while 11.5% were uncertain whether they believed or not, 5.3% were uninterested in beliefs, 4.7% were unbelievers, 3.0% were atheists, and a further 3.7% found it difficult to answer the question. A 2018 survey conducted by the Razumkov Centre found that 71.7% of the population declared themselves believers. About 67.3% of the population declared adherence to one or another strand of Orthodox Christianity (28.7% of the Kiev Patriarchate, 23.4% just Orthodox, 12.8% of the Moscow Patriarchate, 0.3% Ukrainian Autocephalous Orthodox Church, and 1.9% other types of Orthodoxy), 7.7% just Christians, 9.4% Greek Rite Catholics, 2.2% Protestants and 0.8% Latin Rite Catholics. Judaism was the religion of the 0.4%; while Buddhism, Paganism and Hinduism were each the religions of 0.1% of the population. A further 11.0% declared themselves non-religious or unaffiliated.
State atheism
Today in the Russian Federation, approximately 100 million citizens consider themselves Russian Orthodox Christians, amounting to 70% of the population, although the Church claims a membership of 80 million. According to the CIA Factbook, however, only 17% to 22% of the population is now Christian. According to a poll by the Russian Public Opinion Research Center, 63% of respondents considered themselves Russian Orthodox, 6% of respondents considered themselves Muslim and less than 1% considered themselves either Buddhist, Catholic, Protestant or Jewish. Another 12% said they believe in God, but did not practice any religion, and 16% said they are non-believers. In Ukraine, 96.1% of the Ukrainian population is Christian. In Lithuania, the only Catholic country which was once a Soviet republic, a 2005 report stated that 79% of Lithuanians belonged to the Roman Catholic Church.