2000 population estimate for Jacksonville, United States of America In 2000, Jacksonville, United States of America has an estimated population of 878,000 people. 1950/Jacksonville-USA.html>1950 | 1955/Jacksonville-USA.html>1955 | 1960/Jacksonville-USA.html>1960 | 1965/Jacksonville-USA.html>1965 | 1970/Jacksonville-USA.html>1970 | 1975/Jacksonville-USA.html>1975 | 1980/Jacksonville-USA.html>1980 | 1985/Jacksonville-USA.html>1985 | 1990/Jacksonville-USA.html>1990 | 1995/Jacksonville-USA.html>1995 | 2000/Jacksonville-USA.html>2000 | 2005/Jacksonville-USA.html>2005 | 2010/Jacksonville-USA.html>2010 | 2015/Jacksonville-USA.html>2015 | full/Jacksonville-USA.html>All years 1950-2000/Jacksonville-USA.html>1950-2000 | 1950-2015/Jacksonville-USA.html>1950-2015 | 1955-2005/Jacksonville-USA.html>1955-2005 | 1960-2000/Jacksonville-USA.html>1960-2000 | 1970-2000/Jacksonville-USA.html>1970-2000 | 1975-2005/Jacksonville-USA.html>1975-2005 | 1985-2005/Jacksonville-USA.html>1985-2005 | 1995-2005/Jacksonville-USA.html>1995-2005 | 2000-2005/Jacksonville-USA.html>2000-2005 | 2005-2010/Jacksonville-USA.html>2005-2010 | 2005-2015/Jacksonville-USA.html>2005-2015