Yes, Boston should get a dot, too.
As for California though, I still maintain that proportion-wise you have the most number of concerts per given state being that a lot of bands reside somewhere in California, whether it be San Fransico, San Diego, Los Angeles, Oakland, etc... Local and Residency shows are more common there.
this was mainly to show the revelance that you kinda have to go through the midwest to get from NY (and down the east coast) over to California. Most premier bands / national tours skip over smaller cities such as Kansas City and although more rare, sometimes St. Louis. The major stops in the entire midwest are Chicago, Minneapolis/St. Paul, and Dallas/Austin, all about 8+ hours away from me.
personal bitching/wah because i happen to live in kansas: :'( WAH :'( WAH :'( WAH :'(