Update #23 brings Canada to the game. You will be able to recruit players from Canada and also set teams there as well if you wanted to. On default state weight settings Canada does not have very many players generated, but you can edit those yourself as soon as you start a universe. You just edit the state_weights.json for your save file and you will be able to increase the chances of a player coming from a province in Canada.
Here are the Province abbreviations that are used if you wanted to add them to your custom universes. Also here are the default chances of generation.
ON - Ontario (weight: 0.7)
QC - Quebec (weight: 0.4)
BC - British Columbia (weight: 0.24)
AB - Alberta (weight: 0.21)
MB - Manitoba (weight: 0.07)
SK - Saskatchewan (weight: 0.06)
NS - Nova Scotia (weight: 0.045)
NB - New Brunswick (weight: 0.036)
NL - Newfoundland and Labrador (weight: 0.027)
PE - Prince Edward Island (weight: 0.009)
YT - Yukon (weight: 0.002)
NT - Northwest Territories (weight: 0.002)
NU - Nunavut (weight: 0.002)