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NOTOC. Islam is the fastest-growing major religion in Europe , primarily due to immigration .. Islam. Islam. fastest-growing major religion. Growth of religion. Europe. Europe. Since the 1960s , immigrants from Muslim countries started to appear in numbers in Western Europe , especially in Germany , France and Belgium .. Europe. Europe. Western Europe. Western Europe. Although large Muslim communities existed on the continent long before this , especially in the Balkans , this was the first major wave of immigration of Muslims to northwestern Europe .. Europe. Europe. Balkans. Balkans. northwestern Europe. northwestern Europe. Muslims in Europe are not a homogeneous group .. Europe. Europe. Muslims in Europe. Islam in Europe. They are of various national , ethnic and racial identities .. The top countries of origin of Muslims in Western Europe are Pakistan , Turkey and the Maghreb countries -LRB- Morocco , Algeria , Tunisia -RRB- .. Europe. Europe. Western Europe. Western Europe. Pakistan. Pakistan. Turkey. Turkey. Maghreb. Maghreb. Morocco. Morocco. Algeria. Algeria. Tunisia. Tunisia. Muslims also vary in terms of their religious commitment  : some adhere very strictly to the tenets of Islam while others have largely assimilated into secular European culture .. Islam. Islam. In Western Europe , Muslims generally live in major urban areas , often concentrated in poor neighborhoods of large cities .. Europe. Europe. Western Europe. Western Europe. According to the Pew Forum , the total number of Muslims in Europe in 2010 was about 44 million -LRB- 6 % -RRB- .. Europe. Europe. Muslims in Europe. Islam in Europe. Pew Forum. Pew Forum. The total number of Muslims in the European Union in 2010 was about 19 million -LRB- 3.8 % -RRB- .. European Union. European Union. The French capital of Paris and its metropolitan area has the largest number -LRB- up to 1.7 million according to The Economist -RRB- of Muslims out of any city in the European Union .. European Union. European Union. Paris. Paris. its metropolitan area. Ile-de-France. The Economist. The Economist. London also has a substantial community of Muslim origin , numbering about 1 million within the limits of Greater London and exceeding this figure when the entire metropolitan area is taken into account .. London. London. Greater London. Greater London. If the current rate of migration of Muslims to Europe and the Muslim fertility rate remains constant , by 2030 , people of Muslim faith or origin are predicted to form about 10 % of the French population and 8 % of the European population .. Europe. Europe. The table below lists large cities of the European Union with significant Muslim populations , some estimating the percentage of Muslims by using the percentage of Asians in those Cities .. European Union. European Union