What is the population of the world at present?

According to the latest data released by the United Nations, in 20021year, the global population has exceeded 7.9 billion people, about half of whom live in Asia. Africa is also a region with high population density, with a population of about 65.438+0.3 billion, and it is expected to surpass Asia and become the most populous continent in the world by the end of this century.

On a global scale, the population distribution is uneven, with high population density in some areas and relatively low population density in others. For example, some developed countries have low population density, while some developing countries and urban areas have high population density.

With the acceleration of urbanization, the proportion of urban population has gradually increased. According to United Nations data, by 2050, the global urban population will account for 68% of the total population.

The changing trend of population growth rate

Population growth rate refers to the population growth rate in a certain period, usually measured in years. In the past decades, the global population growth rate has changed.

In the first half of the 20th century, the global population growth rate has been relatively low, mainly because the birth rate and mortality rate are relatively high, and the economic and medical conditions are relatively backward. It was not until the end of World War II that the global population growth rate began to accelerate.

In the 1960s and 1970s, the global population growth rate rose rapidly, mainly due to the progress of medical technology and the acceleration of economic development, which led to the decline of mortality and relatively high fertility rate.

By the beginning of 2 1 century, the trend of global population growth rate began to slow down, because of the decline of global fertility rate, especially in some Asian and European countries. The fertility rate in some African countries is still very high, which leads to a relatively high population growth rate in this region.

The future trend of global population growth rate will depend on many factors, such as birth rate, death rate, immigration and migration. According to the United Nations, by the end of this century, the global population growth rate will further slow down and reach a stable level. The changing trend of global population growth rate is influenced by many factors, but from the long-term trend, the global population growth rate is expected to gradually stabilize.