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Energy generated from United States
Fossil fuels 75%
Nuclear fuels 9%
Hydroelectricity 7%
Other renewable sources 5%
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Age structure of United States
0-14-years 19.4%
15-24-years 13.7%
25-54-years 39.9%
55-64-years 14.5%
65-years-and-over 13.9%
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Languages of United States
English 82.1%
Spanish 10.7%
other Indo-European 3.8%
Asian and Pacific island 2.7%
other 0.7%
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Sex ratio of United States
0.97 male/female
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Ethnic groups of United States
white 79.96%
black 12.85%
Asian 4.43%
Amerindian and Alaska native 0.97%
native Hawaiian and other Pacific islander 0.18%
two or more races 1.61%
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Area of United States
9 826 675 km² (3rd)