The legal age for gambling in the United States is 18 or 21, and which one applies depends on your state and the type of gambling. Casino table games, slot machines, and most sports betting almost always require you to be 21. Lotteries, bingo, raffles, and horse racing usually open at 18. There is no single federal minimum, so the answer always traces back to your state’s laws and, for tribal venues, to the compact that casino operates under.
Why the Age Depends on Your State
Gambling rules come from state legislatures, not Congress. You can legally play bingo at 18 in one state, cross the border, and need to be 21 for the same game.
Federal law touches gambling only in narrow ways. The Indian Gaming Regulatory Act governs tribal casinos. The Unlawful Internet Gambling Enforcement Act targets payment processing for illegal online bets. Neither statute sets a minimum age, and the UIGEA explicitly states it does not alter any state or tribal law on gambling.1Office of the Law Revision Counsel. 31 U.S. Code 5361 – Congressional Findings and Purpose So the age question always ends up at your state’s statutes.
Casino Gambling Is Almost Always 21
Walk onto a commercial casino floor and the answer in most of the country is 21. Roughly three dozen states set their casino age at 21, including every major gaming destination: Nevada, New Jersey, Pennsylvania, Mississippi. A handful of states allow casino-style gambling at 18, and those tend to involve specific tribal venues or limited gaming operations rather than full commercial casinos.
The 21 threshold tracks the national drinking age. Casino floors serve alcohol, and matching the two minimums makes enforcement simpler. One age check at the door covers both. Where 18-year-olds can gamble, the venues usually either prohibit alcohol on the gaming floor or operate under separate tribal rules.
Lottery, Bingo, Raffles, and Horse Racing: Mostly 18
Lotteries are the most accessible form of legal gambling, and most states let you buy a ticket at 18. Four states require you to be 21: Arizona, Iowa, Louisiana, and Mississippi. If you’re between 18 and 20, check your state’s rule before buying a scratch-off.
Charitable bingo and raffle tickets generally follow the 18-and-over pattern, though the rules vary and some states don’t set a specific minimum for bingo. Pari-mutuel betting on horse racing also falls into the 18-plus category in most states, making it one of the few forms of wagering where the age floor hasn’t moved up.2National Library of Medicine. Pathological Gambling: A Critical Review – Legal-Age Gambling Opportunities and Restrictions
Sports Betting Is Mostly 21
As of 2025, 39 states plus Washington, D.C. and Puerto Rico have legalized some form of sports wagering. The minimum age in nearly all of those jurisdictions is 21. A small number of states allow it at 18, including Montana, New Hampshire, Rhode Island, and Washington, D.C.
Most sports betting runs through casinos or platforms tied to casino licenses, and those operations already enforce the 21 minimum. Even for standalone mobile sportsbooks, states have generally kept the age at 21 rather than create a separate, lower threshold for app-based wagering.
Tribal Casinos Set Their Own Age
Tribal casinos operate under a separate legal framework. The Indian Gaming Regulatory Act requires tribes to negotiate Tribal-State compacts with their state government before offering Class III gaming, which covers slot machines, blackjack, craps, and other standard casino games.3Office of the Law Revision Counsel. 25 U.S. Code 2710 – Tribal Gaming Ordinances The minimum gambling age is part of that negotiation.
A tribal casino can set its age at 18 even when the commercial casino across the highway requires 21. Arizona’s tribal casinos have historically allowed gambling at 18. In Wisconsin, some tribes agreed to raise their minimum to 21 while others held firm at 18, so different tribal venues inside the same state have different rules.2National Library of Medicine. Pathological Gambling: A Critical Review – Legal-Age Gambling Opportunities and Restrictions If you’re under 21 and heading to a tribal casino, call ahead or check the tribe’s website. The rule lives in that specific compact.
Online Gambling and Daily Fantasy Sports
Online gambling age requirements generally mirror whatever your state sets for the equivalent in-person activity. If your state requires 21 for casino games, you need to be 21 for online slots or table games on a licensed platform. If sports betting is 18 in your state, the mobile app follows.
Licensed platforms verify age at registration. You’ll typically supply your full legal name, date of birth, Social Security number, and sometimes a photo ID, which the platform cross-references against public records before letting you deposit money. Lying about your age doesn’t just risk your winnings. It can result in a permanent ban and forfeiture of your entire account balance.
Daily fantasy sports sit in a slightly different legal space. Major platforms like DraftKings and FanDuel generally require users to be at least 18 for paid contests, though the minimum is higher in some states. Several states regulate daily fantasy sports separately from traditional sports betting, which is why you might be able to enter a contest at 18 in a state that requires 21 for a sportsbook wager.
Sweepstakes Casinos and Cruise Ships
Sweepstakes casinos like Chumba Casino and LuckyLand Slots typically aren’t classified as gambling under state law because they use a no-purchase-necessary model with virtual currency, which removes the “consideration” element that defines gambling. Most set their minimum age at 18. In early 2025, VGW Group, which operates Chumba and LuckyLand, voluntarily raised its minimum age to 21 across its platforms. Other operators may follow, so check the terms of service.
Cruise ship casinos open once the vessel reaches international waters, where state law no longer applies. The age minimum is set by the cruise line. Most major lines, including Carnival and Royal Caribbean, set it at 18. Royal Caribbean makes one exception: on Alaska sailings, the casino minimum is 21.4Royal Caribbean International. Casino The cruise line’s terms of service are the governing document, and they can change.
What Happens If You Gamble Underage
Getting caught gambling underage carries real consequences, and the severity varies by state. The most universal outcome is losing your money. Most states with gambling statutes require forfeiture of any winnings by underage players. In some states the casino seizes the funds; in others, the winnings go to a state fund.2National Library of Medicine. Pathological Gambling: A Critical Review – Legal-Age Gambling Opportunities and Restrictions You’re not walking out with the jackpot either way.
Criminal penalties range widely. Some states treat underage gambling as a civil infraction with a small fine. Others classify it as a misdemeanor that can appear on a background check. That piece matters more than most young people realize. A gambling-related conviction can complicate job applications, professional license applications, and college admissions long after the fine is paid.
Casinos take enforcement seriously because their licenses depend on it. State gaming commissions can fine operators thousands to tens of thousands of dollars per incident, and repeated violations can lead to suspension or revocation of a facility’s gaming license. That’s why you’ll see ID checks, security cameras at entrances, and employee training at any legitimate venue.