United States Facts and Figures.

United States Facts and Figures. BASIC FACTS Official name United States of America Capital Washington, D.C. Area 9,826,630 sq km 3,794,083 sq mi PEOPLE Population 303,824,650 (2008 estimate) Population growth Population growth rate 0.88 percent (2008 estimate) Projected population in 2025 349,666,199 (2025 estimate) Projected population in 2050 420,080,587 (2050 estimate) Population density 33 persons per sq km (2008 estimate) 86 persons per sq mi (2008 estimate) Urban/rural distribution Share urban 81 percent (2005 estimate) Share rural 19 percent (2005 estimate) Largest cities, with population New York 8,214,426 (2006) Los Angeles 3,849,378 (2006) Chicago 2,833,321 (2006) Houston 2,144,491 (2006) Philadelphia 1,448,394 (2006) Ethnic groups White 83.4 percent African American 12.4 percent Asian 3.4 percent Native American 0.8 percent Languages English, Spanish, French, German, Italian, Chinese, and many others Religious affiliations Protestant 56 percent Roman Catholic 27 percent Jewish 2 percent Nonreligious 8 percent O ther 7 percent HEALTH AND EDUCATION Life expectancy Total 78.1 years (2008 estimate) Female 81.1 years (2008 estimate) Male 75.3 years (2008 estimate) Infant mortality rate 6 deaths per 1,000 live births (2008 estimate) Population per physician 375 people (2005) Population per hospital bed 370 people (2005) Literacy rate Total 99.5 percent (1995) Female Not available Male Not available Education expenditure as a share of gross national product (GNP) Number of years of compulsory schooling Number of students per teacher, primary school 4.9 percent (2000-2001) 12 years (2002-2003) 15 students per teacher (2002-2003) GOVERNMENT Form of government Head of state Head of government Legislature Federal republic President President Bicameral legislature House of Representatives: 435 representatives Senate: 100 senators Voting qualifications Universal at age 18 Constitution 17 September 1787, effective 4 March 1789 Highest court Armed forces Total number of military personnel Military expenditures as a share of gross domestic product (GDP) First-level political divisions Supreme Court of the United States Army, Navy (including Marine Corps), Air Force 1,473,960 (2004) 3.7 percent (2003) 50 states and 1 federal district ECONOMY Gross domestic product (GDP, in U.S.$) $13.2 trillion (2006) GDP per capita (U.S.$) $43,967.80 (2006) GDP by economic sector Agriculture, forestry, fishing 1.3 percent (2004) I ndustry 22 percent (2004) Services 76.7 percent (2004) Employment Number of workers Workforce share of economic sector Agriculture, forestry, fishing 157,023,420 (2006) 2 percent (2005) I ndustry 21 percent (2005) Services 78 percent (2005) Unemployment rate 4.6 percent (2006 estimate) National budget (U.S.$) Total revenue $2,538,400 million (2006) Total expenditure $2,799,154 million (2006) Monetary unit 1 United States dollar (US$), consisting of 100 cents Agriculture Cattle, dairy products, corn, soybeans, vegetables, broiler chickens, fruits and nuts, greenhouse and nursery products, hogs, wheat, cotton Mining Natural gas, petroleum, coal, materials used in construction, gold, copper, clays, iron ore, lime, salt, phosphate rock, zinc, magnesium, boron, potassium salts, lead, silver Manufacturing Chemicals, transportation equipment, food products, industrial machinery, electronic equipment, printed materials, fabricated metal products Major exports Machinery, transportation equipment, electric and electronic equipment, chemicals, precision instruments, agricultural products, primary metal products Major imports Transportation equipment, electric and electronic equipment, machinery, crude petroleum and natural gas, apparel, chemicals, primary metal products Major trade partners for exports Canada, Mexico, Japan, United Kingdom, and Germany Major trade partners for imports Canada, Mexico, Japan, China, and Germany ENERGY, COMMUNICATIONS, AND TRANSPORTATION Electricity production Electricity from thermal sources Electricity from hydroelectric sources Electricity from nuclear sources Electricity from geothermal, solar, and wind sources Number of radios per 1,000 people 70.89 percent (2003 estimate) 7.09 percent (2003 estimate) 19.62 percent (2003 estimate) 2.40 percent (2003 estimate) 2,116 (1997) Number of telephones per 1,000 people 606 (2004) Number of televisions per 1,000 people 835 (2000 estimate) Number of Internet hosts per 10,000 people Daily newspaper circulation per 1,000 people Number of motor vehicles per 1,000 people Paved road as a share of total roads 5,549 (2003) 175 (2006 estimate) 808 (2004) 65 percent (2004) SOURCES Basic Facts and People sections Area data are from the statistical bureaus of individual countries. Population, population growth rate, and population projections are from the United States Census Bureau, International Programs Center, International Data Base (IDB) (www.census.gov). Urban and rural population data are from the Food and Agriculture Organization (FAO) of the United Nations (UN), FAOSTAT database (www.fao.org). Largest cities population data and political divisions data are from the statistical bureaus of individual countries. Ethnic divisions and religion data are largely from the latest Central Intelligence Agency (CIA) World Factbook and from various country censuses and reports. Language data are largely from the Ethnologue, Languages of the World, Summer Institute of Linguistics International (www.sil.org). Health and Education section Life expectancy and infant mortality data are from the United States Census Bureau, International Programs Center, International database (IDB) (www.census.gov). Population per physician and population per hospital bed data are from the World Health Organization (WHO) (www.who.int). Education data are from the United Nations Educational, Scientific and Cultural Organization (UNESCO) database (www.unesco.org). Government section Government, independence, legislature, constitution, highest court, and voting qualifications data are largely from various government Web sites, the latest Europa World Yearbook, and the latest Central Intelligence Agency (CIA) World Factbook. The armed forces data is from Military Balance. Economy section Gross domestic product (GDP), GDP per capita, GDP by economic sectors, employment, and national budget data are from the World Bank database (www.worldbank.org). Monetary unit, agriculture, mining, manufacturing, exports, imports, and major trade partner information is from the statistical bureaus of individual countries, latest Europa World Yearbook, and various United Nations and International Monetary Fund (IMF) publications. Energy, Communication, and Transportation section Electricity information is from the Energy Information Administration (EIA) database (www.eia.doe.gov). Radio, telephone, television, and newspaper information is from the United Nations Educational, Scientific and Cultural Organization (UNESCO) database (www.unesco.org). Internet hosts, motor vehicles, and road data are from the World Bank database (www.worldbank.org). Note Figures may not total 100 percent due to rounding. Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.