Final answer:
Europe is smaller in size than the US but has a larger population, exceeding the 325 million people living in the United States.
Step-by-step explanation:
Europe, even though it is smaller than half the size of the United States, is home to a larger population than the US. As of recent estimates, the United States has a population exceeding 325 million people. However, Europe holds about 10% of the world's population. The demographic dynamics between Europe and the US are quite different, with the US experiencing a relatively faster population growth due to higher birth rates and positive net migration, but the total number of people living in Europe still surpasses that of the United States.