Turkey is one of the six independent Turkic states. The country's official language is Turkish, which is spoken by approximately 85% of the population as mother tongue. The most numerous ethnic group are Turks, who constitute between 70% and 75% of the population according to the World Fact book. Kurds are the largest minority and, according to the same source, number around 18% of the population while other minorities are estimated to be at 7-12%. The vast majority of the population is Muslim.