Protestantism is concentrated in the north and east and Roman Catholicism is concentrated in the south and west. According to the last nationwide census, Protestantism is more widespread among the population with German citizenship; there are slightly more Catholics total because of the Catholic immigrant population (including such groups as Poles and Italians). The former Pope, Benedict XVI, was born in Bavaria. Non-religious people, including atheists and agnostics, might make up as many as 55% of the total population, and are especially numerous in the former East Germany and major metropolitan areas.