Below are the U.S. Census figures from the graphic, along with some additional population numbers put together by Tony Dierckins of Zenith City Online fame:
Update: A more recent version of this chart with 2010 figures and additional notes is now available.
I can’t remember ever seeing a graph of Duluth’s population over time, so I made one. The results of the 2010 U.S. Census aren’t in yet, but the state demographer estimated a population of 85,220 in 2008, so perhaps a slight dip can be expected.
The topic for discussion: What is the ideal population for Duluth?