Until the 2013 elections, Karachi had 20 national seats — from NA-239 Karachi West to NA-258 Malir-cum-Karachi West. But in the recent delimitations, the city has gained one more seat, raising the total count to 21. This new seat is NA-252 Karachi West-V, which comprises Manghopir subdivision and some parts of Mominabad subdivision.
Previously, the constituency was overwhelmingly merged with the Orangi area of Karachi, which is mostly inhabited by the Urdu-speaking community. However, after the recent delimitation, the entire Manghopir subdivision is in the newly carved constituency, whose 60 per cent area is rural.