The UN Population Division report of 2019 projects world population to continue growing, although at a steadily decreasing rate, and to reach 10.9 billion in 2100 with a growth rate at that time of close to zero.

Is the world population declining?

The global growth rate in absolute numbers accelerated to a peak (92.9 million) in 1988, but has declined to 81.3 million in 2020.

What is the max population the world can sustain?

If Australians want to continue living as we do without making any changes, and as a planet we want to meet our footprint, then the number of humans Earth can sustain long term is around 1.9 billion people, which was roughly the global population 100 years ago in 1919.