Southern Ukraine
According to a 2016 survey of religion in Ukraine conducted by the Razumkov Center, around 65.7% of the population of southern Ukraine declared to be believers in any religion, while 7.4% declared to be non-believers, and 3.2% declared to be atheists and agnostics. the study also found that 77.6% of the total Southern Ukraine population declared to be Christians (71.0% Eastern Orthodox, 5.1% simply Christians, 0.5% Latin Rite Catholics, 0.53% members of various Protestant churches, 0.5% members of the Ukrainian Greek Catholic Church), and 0.5% were Jewish. Not religious and other believers not identifying with any of the listed major religious institutions constituted about 24.7% of the population.
Religion in Ukraine
In the 10th century the emerging state of Kievan Rus' came increasingly under the cultural influence of the Byzantine Empire. The first recorded Rus' convert to Eastern Orthodoxy, the Princess Saint Olga, visited Constantinople in 945 or 957. In the 980s, according to tradition, Olga's grandson, Knyaz (Prince) Vladimir had his people baptised in the Dnieper River. This began a long history of the dominance of Eastern Orthodoxy in Ruthenia, a religious ascendancy that would later influence both Ukraine and Russia. Domination of Little Russia by Great Russia (from 1721) eventually led to the decline of Uniate Catholicism (officially founded in 1596) in the Ukrainian lands under Tsarist control.