Central Ukraine
According to a 2016 survey of religion in Ukraine held by the Razumkov Center, approximately 73.5% of the population of central Ukraine declared to be believers, while 4.8% declared to be non-believers, and 2.6% declared to be atheist. Of the total population, 86.5% were Christians (76.7% Eastern Orthodox, 6.5% simply Christians, 1.9% Latin Rite Catholics, 1.0% members of various Protestant churches, and 0.4% members of the Ukrainian Greek Catholic Church), 0.3% were Jewish, and 0.1% were Muslims. Not religious and other believers not identifying with any of the listed major religious institutions constituted about 12.8% of the population.
Russian culture
Christianity, Islam, Buddhism, and Judaism are Russia's traditional religions, deemed part of Russia's "historical heritage" in a law passed in 1997.
Estimates of believers widely fluctuate among sources, and some reports put the number of non-believers in Russia as high as 16–48% of the population. Russian Orthodoxy is the dominant religion in Russia. 95% of the registered Orthodox parishes belong to the Russian Orthodox Church while there are a number of smaller Orthodox Churches. However, the vast majority of Orthodox believers do not attend church on a regular basis. Nonetheless, the church is widely respected by both believers and nonbelievers, who see it as a symbol of Russian heritage and culture. Smaller Christian denominations such as Roman Catholics, Armenian Gregorians, and various Protestants exist.