A new bill proposed by Assemblyman Jim Wheeler would see legal gambling age in Nevada lowered to 18 If the newly proposed bill is passed, we could expect a new youngest-ever WSOP Main Event winner within the next few years.marango casino age limit QUNALT CASINO If the legal gambling age is 21 in Nevada, does that mean gambling online when you're 18 is illegal? What is the legal gambling age in las vegas nv? When was gambling legalized in Nevada? What is the legal age to gamble in a casino? At any casino that is state governed in the US: 18 or 21 depending on the state. As it is the legal drinking age in America, the number also works well with gambling, especially for land-based establishments. However, one Nevada lawmaker proposed that the age for gambling in his state be reduced to.