During the last decades, the two largest churches in Germany (Roman Catholic Church and Evangelical Protestant Church in Germany (EKD)) have lost significant numbers of supporters.
The most notable losses occurred in the Protestant churches, mainly due to the atheist policy carried out in the former East Germany. However, since the fall of the Communist regime two decades ago, the Evangelical Protestant Church continued to lose members. Other churches in Germany are quite small (less than or equal to 0.5% of the population). As a result of the reunification (of East and West Germany), the number of Germans without a religion has grown, mainly due to the addition of the eastern states with the vast majority non-religious. Hamburg also joined this segment of the non-religious German population.
According to the 2011 census, Roman Catholics represent 30.8% of the population, forming the largest religious group; The Protestants (mainly Lutherans) form 30.3% of the German population. 38.8% are from other religions or have not informed to which religion they belong.