Currently in Idaho you can buy cigarettes at 18 years of age. That could change. New York is the first state to officially change the legal age of buying tobacco products. Recently the New York Times announced the legal age for buying tobacco, including cigarettes, electronic cigarettes, cigars and cigarillos will rise to 21, from 18, under a bill adopted by the City Council and which Mayor Michael R. Bloomberg has said he would sign. The new minimum age will take effect six months after signing.