According to U.S. census figures dated 2006, the total U.S. population is 299,398,485 of which 75.4% are 18 or older. This results in a population of approximately 225,746,457 that is 18 years or older. Source: U.S. Cencus Bureau Website: http://factfinder.census.gov/servlet/STTable?_bm=y&-geo_id=01000US&-qr_name=ACS_2006_EST_G00_S0101&-ds_name=ACS_2006_EST_G00_
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As of 2020, there are approximately 258 million U.S. citizens who are 18 years old or older. This number is based on the U.S. Census Bureau's population estimates.
As of 2021, there are around half a million people worldwide who are over 90 years old. This number is increasing due to improvements in healthcare and living conditions.
As of 2021, there are estimated to be a few dozen supercentenarians (people over 110 years old) worldwide. These individuals are exceptionally rare and are often recognized for their longevity.
Approximately 22% of the population in the United States is over 60 years old, according to the latest census data. This represents a significant and growing segment of the population as life expectancy continues to increase.
The world's oldest piece of chewing gum is over 9,000 years old. It was found in Scandinavia and was made from birch bark tar.