Characteristics of the U.S. population in 2025 The United States is the third most populated country in the world. This country holds about 4.5% of the world’s population. The U.S. population is currently estimated to have 308.7 million persons. This number is more than double of the population from 1950. Besides the fact of the population has doubled its size, the population has also become qualitatively different from the one from 1950. As noted by the Population Reference Bureau, “The U.S. is getting bigger, older, and more diverse.” The growth of the population is the result of the trends over time in the relationship of increased births, decreased deaths, and increased net immigration.
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The population of the United States had been considered to be relatively “young” in the first half of the 20th century. This was a consequence of relatively high fertility, declining infant and childhood mortality, and high rates of net immigration to the United States by young workers and families. Since 1950, the United States has been replacing the earlier “young” age-sex structure by an older population. The population aged 65 and older has been increasing as a percentage of the total U.S. population. The older population represented 8.1% of the total population in year 1950, increased to 12.8% in 2009, and is projected to reach close to 20.2% in 2025. It is important to recognize that the inevitable demographic momentum will have significant implications for the economic and social forces that will outline the future societal well being. There is plentiful reason to believe that the United States will be able to survive with the current and projected demographic changes if policymakers accelerate efforts to address and adapt to the changing population profile as it relates to a number of essential spheres, such as work, retirement, and pensions; private wealth and income security; the federal budget and inter- generational equity; health, healthcare, and health spending; and the health and well-being of the aging population. Income security during retirement,