Romania is a secular state, and it has no state religion. However, Romania is one of the most religious countries in the European Union and an overwhelming majority of the country's citizens are Christian. The Romanian state officially recognizes 18 religions and denominations. 81.04% of the country's stable population identified as Eastern Orthodox in the 2011 census (see also: History of Christianity in Romania). Other Christian denominations include Roman Catholicism (4.33%), Greek Catholicism (0.75%-3.3%), Calvinism (2.99%), Pentecostal denominations (1.80%). This amounts to approximately 92% of the population identifying as Christian. Romania also has a small but historically significant Muslim minority, concentrated in Northern Dobruja, who are mostly of Crimean Tatar and Turkish eth