According to official statistics from January 2011, 80.4% of the population of Denmark are members of the Church of Denmark (Den danske folkekirke), a Lutheran church that was made the Established Church and state religion by the Constitution. This is down 0.6% compared to the year earlier and 1.2% down compared to two years earlier. Despite the high membership figures, only 3% of the population regularly attend Sunday services. Christian identity tends to be based more on culture rather than religion.
The Constitution states that a member of the Royal Family must be a part of the Established Church, though the rest of the population is free to adhere to other faiths. In 1682 the state granted limited recognition to three religious groups dissenting from the Established Church: Roman Catholicism, the Reformed Church and Judaism, although conversion to these groups from the Church of Denmark remained illegal initially. Until the 1970s, the state formally recognised "religious societies" by royal decree. Today, religious groups do not need official government recognition in Denmark, they can be granted the right to perform weddings and other ceremonies without this recognition.
Denmark's Muslims make up approximately 3% of the population and form the country's second largest religious community and largest minority religion. As of 2009 there are nineteen recognised Muslim communities in Denmark. As per an overview of various religions and denominations by the Danish Foreign Ministry, other religious groups comprise less than 1% of the population individually and approximately 2% when taken all together.
According to the most recent Eurobarometer Poll 2005, 31% of Danish citizens responded that "they believe there is a God", 49% responded that "they believe there is some sort of spirit or life force" and 19% responded that "they do not believe there is any sort of spirit, God or life force". Another poll, carried out in 2009, found that 25% of
