Casinos serving alcohol require a minimum gambling age of 21 to comply with state licensing reuirements.
Indian Casinos: The legal age to gamble in a California Indian casino is either 18 years old or 21 depending on whether the casino has a state-issued alcohol license. California's minimum gambling ages are 21 years old at tribal casinos, 18 years at tribal casinos without alcohol license, 21 for poker, 21 for bingo, 18 for bingo without alcohol license, 18 for horse racing, and 18 for the lottery.
