While there were a small number of Muslims already living in what became Northern Ireland in 1921, the bulk of Muslims in Northern Ireland today come from families who immigrated during the late 20th century. At the time of the 2011 Census there were 3,832 living in Northern Ireland,[17] though the Belfast Islamic Centre states this number may be as high as 10,000 due to other social demographics such as students.[18] The Muslims in Northern Ireland come from over 40 countries of origin, from Western Europe all the way through to the Far East.[19] This situation is reflected in comparably complex institutional arrangements.[20]