Zurlo 2020) draw on figures assembled and updated as part of the World Christian Database (WCD); these put those who identify as Christians on 46.3%, and Muslims on 46.2 and ‘ethnic religions’ on 7.2%. WCD figures predict that both Muslism and Christians will continue to grow as a proportion of the population through to 2050. Their projections predict Christians at that point will make up on 48% of the population and Muslims on 48.7%, both growing at the expense of ethnic religions, down to 2.9% of the population. Hsu et al. (2008) found that the WCD appears to overestimate Christian identification and cautioned against what seems to be uncritical acceptance of figures given by religious groups of their membership. The criticisms offered by Hsu et Al (2008) have been supported by evidence found by Nigeria Mckinnon (2020), which demonstrated that the WCD had substantially overestimated the Anglican proportion of the population. According to a 2018 estimate in The World Factbook by the CIA, the population is estimated to be 53.5% Muslim, 45.9% Christian (10.6% Roman Catholic and 35.3% other Christian), and 0.6% as other. In a 2019 report released by Pew Research Center in 2015, the Muslim population was estimated to be 50% while the Christian population was estimated to be 48.1%. The Pew Forum in a 2010 report compared reports from several sources. The 1963 Nigerian census found that 47% of the population was Muslim, 34% Christian, and 18% other. The 2008 MEASURE Demographic and Health Survey (DHS) found 53% Muslim, 45% Christian, and 2% other; the 2008 Afrobarometer poll found 49% Christian, 50% Muslim, and 1% other; Pew's own survey found 52% Muslim, 46% Christian, and 1% other. Islam Nigeria has one of the largest Muslim populations in West Africa. In Nigeria, about 52 percent of the population is Muslim, The Muslim population in Nigeria continues to grow. Estimates suggest 80-85 million Nigerians identify as Muslim (roughly 50% of the total population), of which the majority are probably Sunni (60 million), though this is not a unified identity and includes a wide variety of different viewpoints. For example, members of Sufi orders, members of the Jama‘atul Izalatul Bid’ah Wa’ikhamatul Sunnah (or Izala) movement, and members of Boko Haram might all identify as Sunni, but the Izala and Boko Haram movements have had strong anti-Sufi components. Estimates also propose that about 4-10 million Nigerians are Shi’a, mostly based in