Yes? Are you really from Karachi? In either case you don't know much about it. There is very little population in Malir 14,15 and 9 relatively when one look at their size.
Now Malir, eastern Karachi and western Karachi 9 has seen highest growth rate in Karachi. Central/south Karachi not as much because it was already populated.
Karachi Division
Karachi Division’s total population has been recorded at 16.051 million – higher by 6.195 million people or 62.85%, according to the provisional results.
Out of this, the Karachi city’s population was 14.91 million. Compared with the 1998 census results when 95.9% people used to live in urban areas, now 92.9% people are living in the metropolitan city.
The maximum concentration of Karachi Division’s population was in Karachi’s District West where 3.9 million lived, according to 2017 results. The district’s population grew by 87.4% or 1.825 million people during the past 19 years.
The Malir District witnessed the highest increase in Karachi Division, as the district’s population increased by 105.7% or 1.03 million to 2.1 million inhabitants.
The District Central’s population increased by 30.4% to 2.97 million. District East’s population increased by 97.5% or 1.435 million during the past 19 years to 2.9 million people.
Similarly, District South population was 1.791 million – higher by 21.2% or 313,000 persons.
Korangi District population was 2.45 million people, which was 896,000 people or 57.4% higher than the 1998 results.