Haven't checked the boards for a while, so I'm late. But I thought it would be interesting anyway. These are dated population figures, of course, and likely differ from when I lived in each place. But, here 'goes.
Dickinson, North Dakota 17,787 (2010)
Grand Forks, North Dakota 52.838 (2010)
Philadelphia, Pennsylvania 1,526,006 (2010)
Glenside, Pennsylvania 8,384 (2010)
Tuebingen, Germany 82,885 (2002)
Tokyo, Japan 8,653,000 (2007-estimate)
Evanston, Illinois 74,486 (2010)
Carbondale, Illinois 25,902 (2010)
Halifax, Nova Scotia 359,183 (2011)
Average: 1,200,052
It never ceases to amaze me how Tokyo continues to throw things in my life way, way off...
Had it not been on the list, the average population of cities I've lived in would be 268,434. Of course, given the fact that the Shinjuku train station in downtown Tokyo sees approximately (by very rough estimates) 3.3 million people enter and exit per day, I guess this skewing of averages is understandable, at least...