The United States order of precedence is a nominal and symbolic hierarchy of important positions within the government of the United States. The order is established by the President of the United States and can be changed at his direction. It has no legal standing and is instead used to dictate ceremonial protocol.
... years of age or older. The median age is 40 years. For every 100 females there are 102.1 males. For every 100 females age 18 and over, there are 100.8 males.
The median ...