USA Demographics

USA Demographics

As of 2008, the United States population was estimated by the U.S. Census Bureau to be 304,516,000. The U.S. population included an estimated 11.2 million illegal immigrants. The overall growth rate is 0.89%, compared to 0.16% in the European Union. The birth rate of 14.16 per 1,000 is 30% below the world average, while higher than any European country except for Albania and Ireland. In 2006, 1.27 million immigrants were granted legal residence. Mexico has been the leading source of new U.S. residents for over two decades; since 1998, China, India, and the Philippines have been in the top four sending countries every year. The United States is the only industrialized nation in which large population increases are projected.

The United States has a very diverse population—thirty-one ancestry groups have more than a million members. Whites are the largest racial group, with German Americans, Irish Americans, and English Americans constituting three of the country's four largest ancestry groups. African Americans constitute the nation's largest racial minority and third largest ancestry group. Asian Americans are the country's second largest racial minority; the two largest Asian American ancestry groups are Chinese and Filipino. In 2006, the U.S. population included an estimated 4.5 million people with some American Indian or Alaskan native ancestry (2.9 million exclusively of such ancestry) and over 1 million with some native Hawaiian or Pacific island ancestry (0.5 million exclusively).

The population growth of Hispanic and Latino Americans has been a major demographic trend. Approximately 44 million Americans are of Hispanic descent, with about 64% possessing Mexican ancestry. Between 2000 and 2006, the country's Hispanic population increased 25.5% while the non-Hispanic population rose just 3.5%. Much of this growth is from immigration; as of 2004, 12% of the U.S. population was foreign-born, over half that number from Latin America. Fertility is also a factor; the average Hispanic woman gives birth to three children in her lifetime. The comparable fertility rate is 2.2 for non-Hispanic black women and 1.8 for non-Hispanic white women (below the replacement rate of 2.1). Hispanics and Latinos accounted for nearly half of the national population growth of 2.9 million between July 2005 and July 2006.

About 83% of the population lives in one of the country's 363 metropolitan areas. In 2006, 254 incorporated places in the United States had populations over 100,000, nine cities had more than 1 million residents, and four global cities had over 2 million (New York City, Los Angeles, Chicago, and Houston). The United States has fifty metropolitan areas with populations greater than 1 million. Of the fifty fastest-growing metro areas, twenty-three are in the West and twenty-five in the South. Among the country's twenty most populous metro areas, those of Dallas (the fourth largest), Houston (sixth), and Atlanta (ninth) saw the largest numerical gains between 2000 and 2006, while that of Phoenix (thirteenth) grew the largest in percentage terms.

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