The initiatives were filed yesterday with the California Attorney General's Office. The first two California sports betting proposals have been filed for the 2024 election. News Headlines 2024 Tribal Sports Betting Proposals Filed in California Octo. Visit our sectiion about California Poker Cardrooms. Poker Cardrooms: You must be 21 years or older. Other casinos enforce the 21 years limit throughout their facility. Some casinos allow people under the minimum age to enter unrestricted areas inside their casino however, you should check with the casino first before visiting. 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.