Musa Qala is a district in the north of Helmand Province, Afghanistan. Its population was around 57,500 in 2012 and are 97% ethnic Pashtun. …Musa Qala is a district in the north of Helmand Province, Afghanistan. Its population was around 57,500 in 2012 and are 97% ethnic Pashtun. The district centre is the village of Musa Qala; there are 19 other large villages and 200 smaller settlements, mostly along the Musa Qala River. The area is irrigated by the Helmand and Arghandab Valley Authority.