The Religion of South Korea

Religion in South Korea is characterized by the fact that almost half (46.5%) of South Koreans have no religion; among those that follow a formal religion, there is a dominance of Buddhism, Protestantism, and Roman Catholicism. These three denominations have grown rapidly in influence only by the mid-20th century.

Korean Buddhism, despite its long history and cultural influence, at the dawn of the 20th century was reduced to a tiny minority after 500 years of suppression by the strictly

 Neo-Confucian Joseon kingdom.

Reference for ; https://en.wikipedia.org/wiki/Religion_in_South_Korea