Final answer:
The current global population is estimated to be around 9.4 billion by 2050, while the population of the United States is more than 325 million people.
Step-by-step explanation:
According to the United Nations and the US Census Bureau, the global population is estimated to be around 9.4 billion by 2050. Other estimates predict that it could reach 10 to 11 billion.
The population of the United States is currently more than 325 million people, making it the third most populous country in the world. The US population is growing at a rate of about one percent each year, mainly due to a positive net migration rate and a fertility rate higher than most European countries.