What Was the Population of the World in History?

Have you ever wondered what the population of the world was like in history? It’s a question that has fascinated historians and scientists for centuries. Let’s take a look at how the world’s population has grown and changed over time.

Ancient Times

In ancient times, it’s difficult to estimate the exact population of the world because there were no official records kept. However, historians believe that the world’s population was around 5 million people during the Stone Age era.

As civilizations began to emerge, populations began to grow. The ancient Egyptian civilization is believed to have had a population of around 3 million people, while ancient China is estimated to have had a population of around 20 million people.

The Middle Ages

During the Middle Ages, populations continued to grow slowly but steadily. The Black Death, which occurred in Europe in the mid-14th century, killed a large percentage of the population and temporarily slowed down population growth.

Despite this setback, by the end of the Middle Ages, Europe’s population had grown to around 80 million people. The rest of the world’s population was estimated to be around 350 million people.

The Industrial Revolution

The Industrial Revolution marked a turning point in human history. Advances in technology led to increased productivity and economic growth, which in turn led to an explosion in human populations.

During this time period, Europe’s population grew from around 100 million people at the beginning of the Industrial Revolution to over 400 million people by 1900. The rest of the world’s population also saw significant growth during this time period.

Modern Times

Today, the world’s population continues to grow at an unprecedented rate. As of 2021, it is estimated that there are over 7 billion people living on Earth.

The reasons for this rapid growth include advances in medicine, increased food production, and improvements in sanitation. However, this population growth also presents significant challenges, including environmental degradation and resource depletion.


In conclusion, the world’s population has grown and changed dramatically throughout history. From just a few million people during ancient times to over 7 billion people today, our planet has seen incredible growth and development. With continued advancements in technology and medicine, it will be interesting to see how the world’s population continues to evolve in the years to come.