a 'population explosion/boom' [=a sudden large increase in the number of people or animals in an area]
There has been a sharp reduction in the bat 'population' in this region.
The 'population of' New York City is over eight million.
(..) Can you walk us through what we're seeing here. This is a routine operation, We found that random patrols help the local population. Feel safer, and to trust us. It's amazing. And, what are these colored dots that we're seeing here general? These are our assets on the ground. (..)2014 RoboCop