How does the world population clock work?

The population clock on the All Things Census page is derived using national-level data from the U.S. Census Bureau, which produces estimates of the country's. read more

The world population clock does not actually tick up every time someone is born. By using past census data from as many countries as possible the rate of population increase can be determined rather accurately. read more

Best Answer: The numbers listed by the population clock are an estimate based on what is known about the birth and death trends of countries around the world. The calculation is based on mathematical formulas the information is frequently adjusted as new data on births and deaths is received. read more

How the Population Clock Works. By D’Vera Cohn. The population clock on the All Things Census page is derived using national-level data from the U.S. Census Bureau, which produces estimates of the country’s total resident population and the components that are the building blocks of demographic change. read more