Religious denominations in Romania according to the 2011 census, given as percentages of the total stable population.
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 part of the Eastern Orthodox Church in the 2011 census (see also: History of Christianity in Romania). Other Christian denominations include the Catholic Church (both Latin Catholicism (4.33%) and Greek Catholicism (0.75%–3.3%)), Calvinism (2.99%), and 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 ethnicity and number around 64,000 people. According to the 2011 census data, there are also approximately 3,500 Jews, around 21,000 atheists and about 19,000 people not identifying with any religion. The 2011 census numbers are based on a stable population of 20,121,641 people and exclude a portion of about 6% due to unavailable data.
The Eastern Orthodox Church is the largest religious denomination in Romania, numbering 16,307,004 according to the 2011 census, or 81.04% of the population. The rate of church attendance is, however, significantly lower. According to a poll conducted by INSCOP in July 2015, 37.8% of Romanians who declare themselves to be religious go to church only on major holidays, 25.4% once a week (especially on Sunday), 18.9% once a month, 10.2% once a year or less, 3.4% say they do not go to church, 2.7% a few times a week, and only 0.9% say they go to church daily.