Grand Theft Auto 5 – Los Santos Civilian Population

Are there any reliable sources which document what the population of Los Santos is in Grand Theft Auto 5?

I am aware that most civilians will likely respawn elsewhere in the city – otherwise, in theory, a player of GTA5 could wipe out the entire city (although it will certainly take some time to do!).

I played for an hour yesterday evening – as I'm sure that one or two others across the globe may have also done – and it dawned on me that I have not read nor heard anything about the population of Los Santos.

If anybody can help I would love to learn this.

For clarity, please note that by "population" I mean the number of human beings living in Los Santos, regardless of their profession, colour or creed.

Many thanks.