Demographic history of Scotland towns had populations of over 10,000, with the capital, Edinburgh, the largest with 57,000 inhabitants. The Highland and Lowland Clearances led to the depopulation of rural areas, but overall the population of Scotland grew rapidly in the late eighteenth and nineteenth centuries. By 1801 it had reached 1,608,420 and it grew to 2,889,000 in 1851 and 4,472,000 in 1901. By the beginning of the twentieth century, one in three lived in the four cities of Glasgow, Edinburgh, Dundee and Aberdeen. Glasgow emerged as the largest city, with a population of 762,000 by 1901, making it "the Second City of the
Scotland in the modern era of the population. The Roman Catholic Church accounted for 15.9% of the population and is especially important in West Central Scotland and the Highlands. In recent years other religions have established a presence in Scotland, mainly through immigration and higher birth rates among ethnic minorities, with a small number of converts. Those with the most adherents in the 2011 census are Islam (1.4%, mainly among immigrants from South Asia), Hinduism (0.3%), Buddhism (0.2%) and Sikhism (0.2%). Other minority faiths include the Bahá'í Faith and small Neopagan groups. There are also various organisations which actively promote humanism and secularism, included within