"population peak" is correct and can be used in written English.
You can use the phrase when you are referring to the maximum size of a population over a specific period of time. For example, "The population peak of downtown Chicago occurred in 1950 when the population was 3.6 million people."
Estimates of the EU immigrant population peak in the West Midlands, where the average estimate is 34%.
Given we're hitting peak oil, peak finance, peak pollution, peak population, peak uranium, etc, there are huge opportunities for innovation - the time to act is now.
At that time, Detroit had lost seven hundred thousand residents from its population peak of about 1.8 million, in the nineteen-fifties.
Many widely-accepted analyses of global problems, such as the Intergovernmental Panel on Climate Change's assessment of global warming, assume a population peak by 2050.
Susan Emmett, Savills' residential research director, said that 60,000 new homes were built per year during the capital's last population peak, in the 1930s.
A half-child reduction in the fertility rate would see global population peak and then fall back to 6 billion by 2100.
Two E. vitis nymphal population peaks were situated between three adult flight peaks.
China as a whole is struggling to adapt as the working-age population peaks.
These analyses suggest two prehistoric population peaks in Finland, the Stone Age peak (c. 5,500 ybp) and the Metal Age peak (~1,500 ybp 57, 66, 67.
Officials said that the homeless population peaks in the summer, and that they hoped to close the jail shelter in a couple of months.
Baltimore, St . Louis, Chicago and Philadelphia(or the counties around them) are all below their historical population peaks, with vacant lots and unused buildings occupying some of their empty spaces.
