21, just like it is in every other state of the US.
^ that is NOT true. I am not sure about New Mexico's rules but if you look up the laws by state there are a lot of places that allow drinking under the age of 21!
The legal drinking age in some provinces and territories in Canada became 19 in various years. For example, in Ontario, the legal drinking age was raised to 19 in January 1979. In New Brunswick, the legal drinking age was changed to 19 in 1972.
The legal drinking age in New Jersey in 1980 was 18 years old. It was later raised to 19 in 1983 and to 21 in 1985 in accordance with the National Minimum Drinking Age Act.
I think it was 18, however I'm not certain.
The legal drinking age in Wyoming is 21 years old.
16 (by Wikipedia)