The legal gambling age by state is either 18 or 21, depending on what you want to play. Lotteries, bingo, and horse racing usually open at 18. Commercial casinos, online casino gambling, and most sportsbooks require 21. There is no single federal gambling age, so two neighboring states can treat the same activity very differently.
Lottery, Bingo, and Scratch-Offs
Most state-run lotteries sell tickets, scratch-offs, and pull-tabs to anyone 18 or older. Charitable bingo generally follows the same line. Lawmakers set a lower threshold here because the per-transaction stakes are modest compared with casino play.
A few states break the pattern. Louisiana and Arizona require lottery players to be 21. Others set 19 for certain products. If you’re 18 and traveling, check the rule in the state where you plan to buy before assuming your home state’s age applies.
Horse Racing and Pari-Mutuel Betting
Live tracks, simulcast venues, and licensed online horse betting platforms are open to 18-year-olds in most states. The exceptions are Nevada, New Hampshire, North Dakota, and Texas, all of which require pari-mutuel bettors to be 21.
Greyhound racing has been banned in every state except West Virginia, so the question rarely comes up for dog tracks anymore.
Commercial Casinos
Full-scale commercial casinos almost universally set the age at 21. Slots, blackjack, roulette, craps, and the poker room all sit behind that line. The reason is practical as much as legal: these venues hold liquor licenses that cover the entire gaming floor, and letting anyone under 21 onto that floor would conflict with alcohol-service rules. A handful of properties that can physically separate gaming from drinking will admit 18-year-olds to the dry areas, but that setup is uncommon at major commercial casinos.
Sports Betting
In most states that have legalized sports betting, you need to be 21, whether you’re using a mobile app, a retail kiosk, or a sportsbook counter inside a casino. The alignment with casino age makes sense because many sportsbooks sit on casino floors.
A smaller group sets sports betting at 18: Montana, New Hampshire, Rhode Island, Wyoming, and Washington, D.C. If you’re between 18 and 20, your state determines whether you can place a legal bet at all.
Daily Fantasy Sports
DraftKings, FanDuel, and similar daily fantasy platforms generally allow players at 18. Most states classify fantasy contests as games of skill rather than gambling, which supports the lower age. A few states push the minimum higher, and the platform will verify your age and location before letting you enter a paid contest.
Online Casino Gambling
Every state that has legalized online casino gambling sets the age at 21. That list currently includes New Jersey, Pennsylvania, Michigan, West Virginia, Delaware, Connecticut, and Rhode Island. In each of them, the online age matches the brick-and-mortar casino age.
Federal law backs this up through the Unlawful Internet Gambling Enforcement Act, which requires legal intrastate online gambling to include “age and location verification requirements reasonably designed to block access to minors.”1Office of the Law Revision Counsel. 31 USC 5362 – Definitions In practice, licensed sites verify your identity at account registration using your name, date of birth, Social Security number, and sometimes a government-issued ID upload.
Sweepstakes Casinos
Sweepstakes casinos sit in a gray area. They use a virtual-currency model and argue they fall outside gambling regulations, and most state statutes predate them. Age requirements vary by site, with many allowing players at 18 and others moving to 21. Several states are weighing legislation that would treat sweepstakes casinos like regulated online gambling, so the rules may tighten.
Tribal Casinos Set Their Own Age
Tribal casinos run under a separate framework. The Indian Gaming Regulatory Act requires tribes to negotiate compacts with the state before offering high-stakes casino games, and those compacts can cover “any other subjects that are directly related to the operation of gaming activities.”2Office of the Law Revision Counsel. 25 USC 2710 – Tribal Gaming Ordinances IGRA itself sets no minimum age.
That leaves room for tribes to admit 18-year-olds, which some do, particularly at properties that don’t serve alcohol on the gaming floor. When compacts come up for renewal, states sometimes push to raise the age to 21 as a condition of the new agreement.3National Center for Biotechnology Information. Pathological Gambling – Legal-Age Gambling Opportunities and Restrictions A tribal casino’s age requirement can shift based on compact renegotiation rather than a change in state law, so confirm the current rule before you go.
Why the Line Splits at 18 and 21
The big driver behind the 21 cutoff is alcohol. The National Minimum Drinking Age Act withholds a percentage of federal highway funding from states that let people under 21 buy or publicly possess alcohol.4Office of the Law Revision Counsel. 23 USC 158 – National Minimum Drinking Age Because commercial casinos serve drinks throughout the gaming floor, 21 becomes the workable gambling age too. Lotteries, bingo halls, and racetracks don’t carry that same alcohol-everywhere problem, which is why the 18 threshold holds for them in most states.
What Happens If You Gamble Underage
If a casino or gaming commission catches you gambling before you’re old enough, your winnings are forfeited. This is not discretionary. Multiple states have statutes that explicitly bar underage players from collecting. In some states the money goes to a state fund, in others the casino keeps it, but you leave with nothing, including your original stake.3National Center for Biotechnology Information. Pathological Gambling – Legal-Age Gambling Opportunities and Restrictions
The same principle applies to lottery tickets. If an underage buyer hits a jackpot, some states let the prize go to a parent or guardian on the minor’s behalf. Others void the prize outright.
Beyond losing the money, the gambler can face criminal penalties. These are usually low-level misdemeanors or the state equivalent. Fines can run from a few hundred dollars to over a thousand, and some jurisdictions allow jail time of up to six months, though incarceration for a first offense is uncommon. Even a minor conviction can show up on background checks and affect college admissions, financial aid, and job applications. Casinos also tend to ban underage patrons caught on their floor, often across every property under the same ownership.