The Slovak Republic has been a strongly Catholic region, even during the period of communist repression of religion from 1944–89. According to the 2001 census, about 69% of the population are Roman Catholics. About 7% of the population are Augsburg Lutheran, 4% are Byzantine Catholics, 2% are members of the Reformed Christian Church, and 1% are Orthodox. Other registered groups include Jehovah's Witnesses, Baptists, Brethren Church members, Seventh-Day Adventists, Apostolic Church members, Evangelical Methodists, and members of the Christian Corps in Slovakia and the Czechoslovak Hussite Church. There are about 2,310 members of the Jewish community, according to the census.
There are about 30 unregistered groups in the country, including: Hare Krishnas, Shambaola Slovakia, Shri Chinmoy, Zazen International Slovakia, Zen Centermyo Sahn Sah, the Church of Scientology, the Baha'i Faith, the Society of Friends of Jesus Christ (Quaker), Nazarenes, and the Church of Jesus Christ of Latter-Day Saints (Mormon).