The ethnic groups in Karachi includes all the ethnic groups in Pakistan. Karachi's inhabitants, locally known as Karachiwala, are composed of ethno-linguistic groups from all parts of Pakistan, as well as migrants from South Asia, 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 range from 15 to 18 million, 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 d