Global Population Estimates by Age, 1950-2050
The demographic future for the U.S. and the world looks very different than the recent past. Growth from 1950 to 2010 was rapid—the global population nearly tripled, and the U.S. population doubled. However, population growth from 2010 to 2050 is projected to be significantly slower and is expected to tilt strongly to the oldest age groups, both globally and in the U.S.
Source: United Nations, Department of Economic and Social Affairs, World Population Prospects: 2012 Revision, June 2013