Mostly Alberta, but also other places, especially given that many provinces have smallish populations, so it doesn't take a lot of oil to be a large part of the

Mostly Alberta, but also other places, especially given that many provinces have smallish populations, so it doesn't take a lot of oil to be a large part of the economy. British Columbia, for example, has 4.6 million people and produces 20k barrels/day of oil, which is more per capita than Texas (even after the recent jump in Texas's production). But it's not as economy-dominating as in Alaska, Norway, or Alberta.