Illinois charitable casinos do a. The links on our site are for entertainment and informational purposes only.niagara falls casino johnny winter LAS VEGAS + STOPPED CASINO This page aims to expand upon gambling ages in the United States and at the various sites that allow players from the U. S. to legally create accounts. We already know that just about every legal online gambling site for a player in the United States is based offshore. That would be the legal gambling age for players. Unlike some of the big laws out there in the U. S. for gambling and online gambling, legal gambling ages are decided at the state level. The most important thing to know about legal gambling ages in the U. S. is that they vary. Everything here from the legal age to gamble online and in-person, to where online gambling is legal, to which US states allow gambling online, to the legalities of Internet gaming, to questions about the legalization and regulation of online gambling are provided on our pages plus more.