According to 2023 Pakistani census population of Nazimabad District is 3,822,325 (3.8 million).

[5] On 11 July 2011, the Government of Sindh restored Karachi Central District again.

[7] The following is a list of the union councils of Nazimabad District, and their respective neighbourhoods and suburban localities.

Nazimabad District has a total of five towns and 45 union councils.

[13] At the time of the 2023 census, 80.20% of the population spoke Urdu, 4.04% Punjabi, 4.65% Pashto, 3.88% Saraiki, 2.22% Sindhi, 0.88% Balochi and 0.82% Hindko as their first language.