Tehran 

Did you know?

"Largest Cities in Iran

The largest city and capital is Tehran, which has a population of nearly 8.4 million. The larger Tehran metropolitan area has a population estimated at 14 million, which makes it the largest city in all of Western Asia and one of the three largest cities in the Middle East after Cairo and Istanbul. Tehran has a population density of 11,887 people per square kilometer (30,790/square mile)."

Source: https://worldpopulationreview.com/countries/iran-population