Final answer:
The U.S. population is over 325 million people, making it the third most populous country. It's expected to grow to 423 million by 2050.
Step-by-step explanation:
The approximate population of the United States as of the latest data is more than 325 million people. The US population ranks as the third most populous in the world, following China and India. The growth rate is relatively high for a developed nation, due to factors like immigration and a fertility rate of about 2.1. A future demographic forecast by the U.S. Census Bureau projects the population of the US to rise to 423 million by 2050, maintaining its position as the third most populous country. Census Bureau. The growth of the population is attributed to factors such as a fertility rate higher than that of most European countries and positive net migration.