According to the ''World Christian Encyclopedia'', the Catholic Church is the largest single Christian body in Sudan since 1995, with 2.7 million Catholics mainly concentrated in South Sudan. The US Episcopal Church claims the existence of large numbers of Anglican adherents from the Episcopal Church of the Sudan with 2 million members in 2005. The Presbyterian Church in Sudan is the third largest denomination in Southern Sudan. It has about one million members in 500 congregations in 2012.