Total population projections
These projections are provided by Stats South Africa. They form part of the "mid year estimates" so it is assumed the projections are also mid-year projections.
Get the following document:
District projections by sex and age (2019-2023) (167,87 KB)
Locate Cape Town in here. Then sum all the categories to get the total population.
Download the original data in CSV format using the link below.