in Karachi than in any other city in the world. However, according to the census 2017 of the Pakistan, the total population of the Pashtuns in Sindh is approximately 2.5 million (5% of the total sindh) and it will make around 10-13 percent of the Pashtoons living in Karachi's population. Districts Population Density per Sq.km. According to 2017 Census, Karachi Central is the most densely populated district not only among six districts of Karachi, but also allover Pakistan with 43,063.51 persons living per square kilometres. Ethnic groups The ethnic groups in Karachi include members from all ethnic groups in Pakistan, making the city's population a diverse melting pot. At the end of the 19th century, the population of the city was about 105,000, with a gradual increase over the next few decades, reaching more than 400,000 on the eve of independence. Estimates of the population are approximately 23,000,000, of which an estimated 90% are migrants from different backgrounds. The city's population is estimated to be growing at about 5% per year (mainly as a result of internal rural-urban migration), including an estimated 45,000 migrant workers coming to the city every month from different parts of Pakistan. According to the community leaders and social scientists there are over 1.6 million Bengalis and up to 400,000 Rohingyas living in Karachi. Religion According to a 1998 census of Pakistan, the religious breakdown of the city is as follows: Muslim (96.45%), Christian (2.42%), Hindu (0.86%), and other (0.27%). Other religious groups include Sikhs, Buddhists, Parsis, Baháʼís, Ahmedis and Jews. Of the Muslims, approximately 73% are Sunnis and 27% are Shi'ites. Trivia Stunned by Karachi's diverse demographics, the American political scientist and South Asia expert Stephen P. Cohen once stated that if Karachi's ethnic groups "got along well, it would be an amazingly complex city, a lot like New York." See also Demographic history of Karachi Ethnic groups in Karachi Religion in Karachi Demographics of Sindh Demographics of Pakistan List of metropolitan areas by population References :) Further reading The Political Ethnicity and the State of Pakistan Metropolitan areas of Pakistan Karachi