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By the time 2024 closed out, 38 states plus Washington, D.C., offered some form of legalized sports betting — a transformation that traces back to a single federal court ruling. On May 14, 2018, the Supreme Court struck down PASPA in Murphy v. NCAA, stripping the federal government of its authority to ban state-authorized sports wagering and handing each state the power to legalize, regulate, and tax the activity on its own terms. If you want the full mechanics of how a parlay ticket actually works before diving into where you can legally place one, start with Parlay Betting Basics: How a Parlay Wager Works.

How many states currently allow online parlay betting?

Approximately 32 states permit statewide online or mobile wagering as of mid-2026, meaning you can open an app, build a multi-leg ticket, and submit it from your couch. That number is meaningfully smaller than the 38-plus jurisdictions with some form of legal betting, because a handful of states restrict wagering to retail sportsbook locations only. Mississippi is the clearest example: retail sports betting is permitted there, but online sports betting — including online parlays — is not legal, so you cannot place a mobile parlay ticket without physically being at a licensed casino counter. Always check your own state's current regulatory status before depositing, since the legal landscape continues to shift.

Which states launched recently, and what does that mean for you?

Five states launched sports betting in 2023 — Ohio, Massachusetts, Florida, Kentucky, and Maine — each layering on new state-level tax and regulatory obligations for bettors. North Carolina followed on March 11, 2024, becoming the 30th state to go live with legal online sports betting. Delaware's history is worth noting here: it fully legalized sports betting in July 2018 shortly after Murphy, but parlay wagering through the Delaware Lottery had actually been permitted since 2009, making it one of the longest-running legal parlay markets in the country. A few tribal operations in states like New Mexico and Wisconsin also offer sports betting under existing Class III gaming compacts without full state legislation, creating patchwork access that varies by location within those states.

What is the difference between online and retail-only parlay access?

In a retail-only state, you must walk into a licensed sportsbook — typically inside a casino — to hand over cash or a voucher and place your ticket at a physical kiosk or window. Online and mobile access, by contrast, lets you build your parlay legs anywhere inside state lines. For a deeper look at the individual components that go on a ticket, see What Are Parlay Legs? Spreads, Moneylines, and Totals on One Ticket. If you are still deciding whether a multi-leg parlay is the right structure for your bankroll versus a simpler wager, Parlay vs Straight Bet: Which Should You Place? walks through the tradeoffs with concrete numbers.

Does your state determine which sportsbook apps you can use?

Yes, and this is one of the most practical implications of the post-PASPA state-by-state framework. A licensed operator like FanDuel or DraftKings must hold a valid license in each individual state where it accepts bets; an app that is live in 25 states is still unavailable to you if your state has not authorized it or has not legalized online wagering at all. Arizona, as one data point, has 17 active licensed sportsbooks, representing one of the most competitive parlay markets in the country in terms of odds boosts and promotions. Before you sign up anywhere, confirm the operator holds a current license issued by your state gaming regulator. For a plain-English breakdown of what a parlay actually is if you are newer to the bet type, What Is a Parlay Bet? Plain-English Definition with Examples covers the fundamentals without jargon.

Are there any states where alternative parlay-style apps fill the gap?

In states where standard online sports betting remains restricted — California being the most prominent example — pick'em and DFS-style platforms such as ParlayPlay operate in certain jurisdictions, offering parlay-adjacent products under a different regulatory framework. These are not licensed sportsbooks in the traditional sense, and the rules, payouts, and consumer protections differ. Legality of any specific app in your state should be verified directly with the platform and your state's gaming or DFS regulatory body before you wager real money.

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