The 2011 census reported a population of 1,117,094 in Allahabad city. Provisional data suggest a density of 1,086 people per km2 in 2011 for Allahabad district, compared to 901 in 2001. Natives of Uttar Pradesh form the majority of Allahabad’s population. With regards to Houseless Census in Allahabad, total 5,672 families live on footpath or without any roof cover. This approx 0.38% of total population of Allahabad district. The sex ratio of Allahabad is 901 per 1000 males and child sex ratio of girls is 893 per 1000 boys, lower than the national average.

Hindi, the official state language, is the dominant language in Allahabad. Urdu and other languages are spoken by a sizable minority. Hindus form the majority of Allahabad’s population; Muslims compose a large minority. According to provisional results of the 2011 national census, Hinduism is majority religion in Allahabad city with 76.03% followers. Islam is second most popular religion in city of Allahabad with approximately 21.94 % following it. Christianity is followed by 0.68 %, Jainism by 0.10 %, Sikhism by 0.28 % and Buddhism by 0.28 %. Around 0.02 % stated ‘Other Religion’, approximately 0.90 % stated ‘No Particular Religion’. Allahabad’s literacy rate of 86.50 percent is the highest in the region. Male literacy is 90.21 percent and female literacy 82.17 percent. Among 35 major Indian cities, Allahabad reported the highest rate of violations of special and local laws to the National Crime Records Bureau.