Map showing the number of NHL players from each federated state of the USA and each province and territory of Canada during the 2009-2010 season. 
Map source: http://commons.wikimedia.org/wiki/File:Map_of_USA_and_Canada,_NHL.svg
NHL shield source: http://en.wikipedia.org/wiki/File:05_NHL_Shield.svg
Player information source: http://www.nhl.com/ice/playersearch.htm#?navid=nav-ply-search 

Information was current in January 2011.
Own work
Bethmallory