World Population Day Timeline

April 24, 2017

7.5

On this day, statistical models estimate that the world population reached 7.5 billion

2000

Sixth Billion

Just 40 years after it reached 3 billion, the population doubles to 6 billion

1989

A Holiday Is Born

The United Nations recognizes July 11 as World Population Day

1960

Third Billion

The world population reaches 3 billion

1927

Second Billion

The world population doubles to 2 billion

1804

First Billion

The world population reaches 1 billion people