Law enforcement in the
Among developed nations, the
Law enforcement in the
Among developed nations, the
The American life expectancy of 77.8 years at birth is a year shorter than the overall figure in Western Europe, and three to four years lower than that of
The
American public education is operated by state and local governments, regulated by the United States Department of Education through restrictions on federal grants. Children are required in most states to attend school from the age of six or seven (generally, kindergarten or first grade) until they turn eighteen (generally bringing them through 12th grade, the end of high school); some states allow students to leave school at sixteen or seventeen. About 12% of children are enrolled in parochial or nonsectarian private schools. Just over 2% of children are homeschooled. The
The
English is the de facto national language. Although there is no official language at the federal level, some laws—such as
As of 2008, the
The
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
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
The