Final answer:
The median age of the U.S. population is about forty years old, with half of the people under forty and half over forty. This age has been gradually increasing, signifying an aging population. By 2030, projections indicate a shift in age distribution, with a significant 53.6% under the age of nineteen.
Step-by-step explanation:
The median age of the U.S. population is a figure calculated by statisticians that represents the middle point of the country's age distribution. According to the U.S. Census Bureau data from 2010, the median age is approximately forty years old. This suggests that half of the U.S. population is younger than forty and the other half is older.
The median age in the U.S. has been increasing over time, reflecting an overall aging population. Additionally, the U.S. boasts subgroups within the older population, categorized as the young-old, middle-old, and old-old, with resources now more widely available, allowing people to better prepare for aging.
Looking ahead to 2030 projections, the population division changes, with 188.2 million people or 53.6% of the population falling into the '19 and under' category according to pie charts from the U.S. Census Bureau.