How many people are on the planet?

The estimate of the world's population on October 1, 2011 was 6,965,000,000 (almost 7 billion) and the total is estimated to rise by about 200,000 per day.

At that rate, most estimates give the Earth a total population of 7 billion sometime in mid-2012.
About 6.8 billion or 6,800,000,000