The U.S. government estimates the total population at 2.7 million (midyear 2020 estimate). According to the 2011 census, of the 90 percent of the population that responded to a question regarding religious affiliation, 86 percent identify as Roman Catholic, and 7 percent do not identify with any religious group. Religious groups that together constitute less than five percent of the population include Russian Orthodox, Old Believers, Lutherans, Evangelical Reformed, Jews, Muslims, Greek Catholics, Karaite Jews, Jehovah’s Witnesses, members of the Full Gospel Word of Faith Movement, Pentecostals/Charismatics, Old Baltic faith communities, Baptists, Seventh-day Adventists, Methodists, and members of the New Apostolic Church, and the Church of Jesus Christ of Latter-day Saints.
In the 2011 census, approximately 5,100 persons identified as followers of Romuva, a religion practiced in the country since before the introduction of Christianity. According to the census, the Jewish population is predominately concentrated in larger cities and is estimated at 3,300, of whom approximately 250 are Karaite Jews, who traditionally live in Trakai and in the greater Vilnius region. The Sunni Muslim population numbers approximately 2,800, the majority of whom are Tatars, a community living primarily in Vilnius and Kaunas. The Muslim community also includes recent converts, migrants, refugees, and temporary workers from the Middle East and Africa, most of whom are Sunni.