People ::United States
Population:
307,212,123 (July 2009 est.) country comparison to the world: 3
Age structure:
0-14 years: 20.2% (male 31,639,127/female 30,305,704)
15-64 years: 67% (male 102,665,043/female 103,129,321)
65 years and over: 12.8% (male 16,901,232/female 22,571,696) (2009 est.)
Median age:
total: 36.7 years
male: 35.4 years