One cultural aspect of Icelanders often discussed is their religion. Iceland’s constitution grants freedom of religion; however there is no separation of church and state as in America. The state church is Lutheran, so most of the population is Lutheran. However, Icelanders in general are considered to be very liberal. Many claiming a denomination do not attend church at all.
According to the 2004 census, 85.5% of the Icelandic population is members of the Church of Iceland. 3.6% claim affiliation with the Free Lutheran Churches; 2.4%, no religious group; and 2%, Catholic. A portion of the remaining population is part of other Christian denominations. Another Icelandic religion that is continuously becoming more popular is Ásatrú, an ancient Norse religion that teaches the harmony present in nature. The remaining population ascribe to other religions and sects.