Dar es Salaam is the largest city and financial hub of Tanzania. It is also the capital of the Dar es Salaam Region. With a population of over 7 …Dar es Salaam is the largest city and financial hub of Tanzania. It is also the capital of the Dar es Salaam Region. With a population of over 7 million people, Dar es Salaam is the largest city in East Africa by population and the sixth-largest in Africa. Located on the Swahili coast, Dar es Salaam is an important economic center and one of the fastest-growing cities in the world. Experts predict that the city's population will grow to over 10 million before 2030.