The United States Census of year 1990, conducted by the Census Bureau, determined the resident population of the United States to be 248,709,873, an increase of 9.8 percent over the 226,545,805 persons enumerated during the 1980 Census. ... The United States Census Bureau (officially Bureau of the Census) is a part of the United States Department of Commerce. ... Enumeration is the name given to the kind of mathematics that deals with counting objects. ...
The legislative branch consists of the UnitedStates Congress, while the Supreme Court of the UnitedStates is the head of the judicial branch.
Puerto Rico and the Northern Marianas are commonwealths of the UnitedStates.
The social structure of the UnitedStates, a capitalist country, is highly stratified, with a large proportion of the wealth of the country controlled by a small fraction of the population which exerts disproportionate cultural and political influence.
The UnitedStatesCensus Bureau (officially Bureau of the Census as defined in Title 13 U.S.C.) is a part of the UnitedStates Department of Commerce.
The Constitution of the UnitedStates directs that the population be enumerated at least once every ten years (through the U.S. Census), and each state's number of Federal Representatives in Congress determined accordingly.
The Census Bureau also mantains the Population Clock; a realtime extrapolation of information on population, birth and death to give their approximation of the number of people in the UnitedStates and the World.