Mesofact: World Population will hit 7 Billion this Month

As many of you are probably aware, the estimated world population is set to hit 7 billion at the end of this month, according to the United Nations Population Fund. And of course, this milestone came relatively rapidly:

According to demographers, the world’s population didn’t reach 1 billion until 1804, and it took 123 years to hit the 2 billion mark in 1927. Then the pace accelerated – 3 billion in 1959, 4 billion in 1974, 5 billion in 1987, 6 billion in 1998.

In the spirit of mesofacts, I put the question to readers of this blog: what was the world population that you were taught in school? I learned 5 billion.

3 Responses to “Mesofact: World Population will hit 7 Billion this Month”

  1. Vincent October 17, 2011 at 10:00 pm Permalink

    I was born in 1983, and remember being taught 5 billion.

  2. Chris Radcliff October 25, 2011 at 10:20 pm Permalink

    I learned five billion as well.

  3. Dave P October 28, 2011 at 11:37 am Permalink

    4 billion is the number we were taught in grade school. (I was born in 1973.)