official site for visitors to Bratislava  

In the 2001 census, the faith of most of Bratislava's residents (243,048; 56.7%) was recorded as being Roman Catholic. The next largest group (125,729; 29.3%) were recorded as being atheist.
Of the remainder,
24,810 (6%) were Augsburg Confession Lutheran,
3,163 (0.7%) Greek Catholic,
1,918 Reformed Christian,
1,827 Jehovah's Witness,
1,616 Eastern Orthodox,
737 Methodist,
748 Jewish,
and 613 Baptist.