Monthly Estimates of the United States Population: April 1, 1980 to July 1, 1999, with Short-Term Projections to November 1, 2000. (Numbers in thousands. Consistent with 1980 and 1990 population estimates bases.) Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, D.C. 20233 Contact: Demographic Call Center Staff, 1-866-758-1060 Internet Release Date: December 20, 2000 AFO = Armed Forces Overseas