Us Population

Topics: Population, Demography, Population growth Pages: 4 (1100 words) Published: July 30, 2013
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.

Population Growth, Birth, Death, and Net Immigration Rates:
United States, 1950-2050

Despite the growth of the U.S. population during this period, the United States’ portion of the world’s total population has been declining compared to less developed, higher fertility countries where the population have grown more rapidly. The Census Bureau projects that the U.S. population will continue growing. The projection is that the population will be almost 440 million persons by the year 2050. The United Nations and the Social Security Administration, estimate that the U.S. population will be 404 million or 411 million respectively in the same year.

The average annual growth rates between 1950 and 2000 were positive, however it has been declining over time. The average population growth rate in the 1950s was estimated to be 1.7% per annum while it decreased to only 0.9% per year during the year of 1980. The Census Bureau assumes that the growth rate will stay positive through year 2025, but will fluctuate over the time period. Tendencies in the size and growth of the U.S. population reflect the interactions of three underlying determinants: the fertility...

Bibliography: CRS calculations based on data in United Nations, World Population Prospects: the 2008 Revision, Highlights, United Nations: New York, 2009, available at wpp2008_highlights.pdf.
U.S. Census Bureau, 2013 Resident Population at
U.S. Census Bureau International Data Base at
Free Demographics,
United Nations Department of Economic and Social Affairs. World Population to 2300. 2004. Executive Summary, Page 2.
United Nations Population Division Home Page, United Nations Department of Economic and Social Affairs
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