America Counts: Stories Behind the Numbers

World Population Estimated at 8 Billion

Using data from the International Database, the U.S. Census Bureau estimates the world population hit 8 billion on September 26.

Emphasis on the word estimates.

There are many sources of uncertainty in estimating the global population, and it’s unlikely this population milestone was reached on that exact date.

For example, the United Nations Population Division estimates the world population reached 8 billion on November 15, 2022.

Why the discrepancy? Many of the world’s most populous countries (such as India and Nigeria), haven’t conducted a census in over 10 years, and many countries lack civil registration and vital statistics systems that accurately record births and deaths among their population.

Given the lack of precise population data worldwide, the U.N. and Census Bureau estimates are not that far apart, and both imply similar overall trends. 

Continue reading to learn more about:

• Population growing at a slower pace
• Declining fertility 
• Growth coming from adult populations
• Global aging
• Increasing life expectancy

Help us spread the word about America Counts!

Share this on social media or forward it to a friend.

You May Be Interested In

Fertility Rates: Declined for Younger Women, Increased for Older Women

Despite broader stability in fertility trends, a Census Bureau analysis shows that the age at which U.S. women gave birth changed from 1990 to 2019.

About America Counts

America Counts features stories on various topics including: 

• Families, Housing, Employment, Business, Education, Economy 
• Emergency Management, Health, Population, Income and Poverty

For the Media: Contact our Public Information Office for inquiries or interviews. 

Don't miss an America Counts story! Use the button below to sign up and update your preferences.