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Demographic, Environmental,
and
Security Issues Project


Human Population through History
1 A.D. to 2020

(animated version)
click on a map to see larger version

A Population Time Line from The Population Bomb, KQED (PBS)

Maps are from an article by John H. Tanton, "End of the Migration Epoch," reprinted by The Social Contract, Vol IV, No 3 and Vol. V, No. 1, 1995.

each dot represents 1 million people

1 A.D. -- 150 
million 1350 -- 300 
million
1700 -- 600 
million 1800 -- 900 
million
1900 -- 1.6 
billion 1950 -- 2.4 
billion
1985 -- 5 
billion 2020 -- 8 billion