According to the 2011 census Allahabad district has a population of 5,959,798, roughly equal to the nation of Eritrea or the US state of Missouri. This gives it a ranking of 13th in India (out of a total of 640). As of 2011 it is the most populous district of Uttar Pradesh (out of 71). The district has a population density of 1,087 inhabitants per square kilometre (2,820 /sq mi). Its population growth rate over the decade 2001-2011 was 20.74%.
Allahabad is a holy city in Hindu religion, also known as Prayag. It is a place where the three rivers - Ganges, Yamuna and the mythical river of Sarasvati - meet at a point known as Sangam. Sangam is one of the most significant points of Allahabad.