2000 population estimate for Chicago, United States of America In 2000, Chicago, United States of America has an estimated population of 6,951,000 people. 1950/Chicago-USA.html>1950 | 1955/Chicago-USA.html>1955 | 1960/Chicago-USA.html>1960 | 1965/Chicago-USA.html>1965 | 1970/Chicago-USA.html>1970 | 1975/Chicago-USA.html>1975 | 1980/Chicago-USA.html>1980 | 1985/Chicago-USA.html>1985 | 1990/Chicago-USA.html>1990 | 1995/Chicago-USA.html>1995 | 2000/Chicago-USA.html>2000 | 2005/Chicago-USA.html>2005 | 2010/Chicago-USA.html>2010 | 2015/Chicago-USA.html>2015 | full/Chicago-USA.html>All years 1950-2000/Chicago-USA.html>1950-2000 | 1950-2015/Chicago-USA.html>1950-2015 | 1955-2005/Chicago-USA.html>1955-2005 | 1960-2000/Chicago-USA.html>1960-2000 | 1970-2000/Chicago-USA.html>1970-2000 | 1975-2005/Chicago-USA.html>1975-2005 | 1985-2005/Chicago-USA.html>1985-2005 | 1995-2005/Chicago-USA.html>1995-2005 | 2000-2005/Chicago-USA.html>2000-2005 | 2005-2010/Chicago-USA.html>2005-2010 | 2005-2015/Chicago-USA.html>2005-2015