The 2011 census estimates the population to be 51.8 million. The census did not include statistics on religious demography. According to 2001 census figures, 80 percent of the population is Christian. Hindus, Muslims, Jews, Buddhists, and adherents of traditional African beliefs together constitute slightly less than 5 percent of the population. Approximately 15 percent of the population adheres to no particular religion or declines to indicate an affiliation; some of these individuals probably adhere to unaffiliated indigenous religions. Many combine Christian and indigenous religious practices. The Church of Scientology has a small following.
The African Independent Churches constitute the largest group of Christian churches, including the Zion Christian Church (approximately 11 percent of the population), the Apostolic Church (approximately 10 percent), and a number of Pentecostal and charismatic groups. Other Christian groups include Methodists, Anglicans, Baptists, Lutherans, Presbyterians, Roman Catholics, Seventh-day Adventists, and members of the Greek Orthodox, Dutch Reformed, and Congregational churches.
Ethnic Indian/Asian South Africans account for 2.5 percent of the total population. Roughly half of the ethnic Indian population is Hindu, and the majority resides in KwaZulu-Natal. The small Muslim community includes Cape Malays of Malayan-Indonesian descent, individuals of Indian or Pakistani origin, and some 70,000 Somali nationals and refugees.
The small Jewish community is concentrated in Johannesburg and Cape Town.