Final answer:
The most common racial group among the U.S. population aged 65 and over is White Americans, who make up 76.3% of the older adult population according to 2019 census data.
Step-by-step explanation:
The racial group most common among the U.S. population aged 65 and over is White Americans. According to data from the U.S. Census Bureau, a significant majority of older Americans identify as White. As of 2019, 76.3 percent of U.S. adults identify themselves as White alone. However, it is important to note that the demographic landscape is changing over time. While White Americans have been the dominant group, there has been a gradual increase in the percentage of the population that is of Hispanic origin since 1990.
Another consideration is the growth in life expectancy, which leads to an aging population. This demographic shift is impacting policy decisions and society at large. An increase in the elderly population, particularly White Americans, raises questions about the old-age dependency ratio and its implications for the economy and social services.