Each year the US State Department releases a country by country report on religious freedom. The 2006 report was released on September 15. El Salvador received passing grades with the "generally free practice of religion."
The report had these statistics about the religious affiliations of the Salvadoran population:
The country has an area of 8,108 square miles and an estimated population of approximately 6.7 million. The country was predominantly Roman Catholic, with a sizeable Protestant minority, plus small communities of the Church of Jesus Christ of Latter-day Saints (Mormons), Hare Krishna, Muslims, and Jews, among others. A very small segment of the population practiced an indigenous religion.
According to a 2003 survey by the Technological University Public Opinion Center, approximately 57.1 percent of the population was Roman Catholic. Additionally, 21.2 percent were members of Protestant churches. (Among Protestants, informal church estimates suggested approximately 35 percent were Baptists and members of Assemblies of God.) Members of Jehovah's Witnesses accounted for an estimated 1.9 percent of the population, 0.7 percent were members of the Church of Jesus Christ of Latter-day Saints, 2.3 percent were associated with other churches and religious groups, and 16.8 percent were not affiliated with any church or religion.
Several missionary groups were active, including Mormon, Catholic, Seventh-day Adventist, and Assembly of God.