Mardān is a city in the Mardan District of Khyber Pakhtunkhwa Province, Pakistan. Located in the Valley of Peshawar, Mardan is the second-l…Mardān is a city in the Mardan District of Khyber Pakhtunkhwa Province, Pakistan. Located in the Valley of Peshawar, Mardan is the second-largest city of Khyber Pakhtunkhwa. It is a fast-growing city that experienced a population boom in the latter half of the 20th century.