How many people are there in the world?

7.7 billion

The world's population reached 7.7 billion in mid- 2019, having added one billion people since 2007 and two billion since 1994. The growth rate of the world's population peaked in 1965-1970, when it was increasing by 2.1 per cent per year, on average.

Explanation:

There is over a billion people on Earth