In the Eurostat - Eurobarometer poll of 2005, 44% of Hungarians answered that they believed there is a God, whereas 56% answered they did not believe in a God, of which 31% answered they believed there is some sort of spirit or life force, and 19% that they do not believe there is a God, spirit, nor life force.
Religious history
The majority of Hungarians became Christian in the 10th century. Hungary's first king, Saint Stephen I, took up Western Christianity, although his mother, Sarolt, was baptized in the Eastern Rite. Hungary remained predominantly Catholic until the 16th century, when the Reformation took place and, as a result, first Lutheranism, then soon afterwards Calvinism, became the religion of almost the entire population.
In the second half of the 16th century, however, Jesuits led a successful campaign of counterreformation among the Hungarians. The Jesuits founded educational institutions, including Péter Pázmány Catholic University, the oldest university that still exists in Hungary, but organized so-called missions too in order to promote popular piety. By the 17th century, Hungary had once again become predominantly Catholic.
Some of the eastern parts of the country, however, especially around Debrecen ("the Calvinist Rome"), still have significant Protestant communities. Orthodox Christianity in Hungary has been the religion mainly of some national minorities in the country, notably, Romanians, Rusyns, Ukrainians, and Serbs.
Hungary has been the home of a sizable Armenian community as well. They still worship according to the Armenian Rite, but they have reunited with the Catholic Church (Armenian Catholics) under the primacy of the Pope. According to the same pattern, a significant number of Orthodox Christians became re-united with the rest of the Catholic world (Greek Catholics).
Faith Church, one of Europe's largest Pentecostal churches, is also located in Hungary. Faith Church accepts the results and spiritual, moral values of both early Christianity and the Reformation, as well as other revival movements serving the progress of the Christian faith. Based on the 1% tax designation to churches, Faith Church is the fourth most supported church in Hungary. The weekly Sunday service of the Church is regularly broadcast in live television.
See: http://en.wikipedia.org/wiki/Hungary#Religion_in_Hungary