There's a website that tracks the world's population in real-time
As of the time of this writing, the overall human population is estimated to be more than 8 billion people. And if you want to watch that increase in real-time, you can tune into the You do not have permission to view the full content of this post.Log in or register now., which shows the upticks and downticks as babies are born and people die.
You can also see the current populations of different countries.