MD · Polymarket US · Checked Oct. 21, 2026
Is Polymarket US legal in Maryland?
The short answer
Polymarket US does not publish a list of states where it is unavailable, and we found no court order, regulator action or Polymarket US notice that stops it from serving Maryland as of Oct. 22, 2026.
Maryland has one public action on record that names Polymarket US. The latest (Aug. 13, 2026): Baltimore City (a municipality, not the state) sued in the Circuit Court for Baltimore City under its consumer-protection ordinance, alleging unlicensed sports betting; Kalshi removed the case on Aug. 14, 2026.
Federal appeals from Maryland go to the Fourth Circuit, which heard argument on May 7, 2026 and has not yet ruled.
Availability: Polymarket App Terms & Conditions (ISV Front End), effective October 22, 2026 (embedded at polymarket.us/tos), checked Oct. 22, 2026. A summary of public actions, not legal advice.
Cite this page
Bluebook
Is Polymarket US Legal in Maryland?, Prediction Market Laws (last updated Oct. 22, 2026), https://predictionmarketlaws.com/platforms/polymarket/maryland.
APA
Prediction Market Laws. (2026, October 22). Is Polymarket US Legal in Maryland?. https://predictionmarketlaws.com/platforms/polymarket/maryland
What Maryland has done about Polymarket US
Other development
Baltimore City (a municipality, not the state) sued in the Circuit Court for Baltimore City under its consumer-protection ordinance, alleging unlicensed sports betting; Kalshi removed the case on Aug. 14, 2026.
Source: Baltimore City press release
Court cases
We track no case between Polymarket US and Maryland.
The legal backdrop in Maryland
- State status
- In litigationThe state and a prediction market operator are actively in court, and no order blocking the operator is in force.
- Online sports betting
- Legal onlineRetail and mobile sports betting; mobile launched Nov. 23, 2022.
- Federal appeals court
- Fourth CircuitArgued, awaiting decision.
- Who regulates
- Maryland Lottery and Gaming Control Agency; Maryland Attorney General
- Laws and bills
- None specific to prediction markets
Using Polymarket US in Maryland
- Minimum age
- 18
- Identity checks
- Polymarket US requires date of birth, a phone number confirmed by text code, legal name, residential address and Social Security number. Most users are verified automatically; others may be asked for a government-issued ID and a selfie check. KYC must be completed before depositing or trading, and the terms require KYC, AML and sanctions screening. Source
Other platforms in Maryland
- KalshiNo restriction found
- Polymarket USNo restriction found
- Gemini PredictionsNo restriction found
- RobinhoodNo restriction found
- Crypto.comNo restriction found
- CoinbaseNo restriction found
- WebullNo restriction found
- DraftKings PredictionsSports blocked
- FanDuel PredictsSports blocked
- UnderdogOffered
- PrizePicksSports blocked
- Fanatics MarketsNot offered
Questions people ask
- Is Polymarket US legal in Maryland?
- Polymarket US does not publish a list of states where it is unavailable, and we found no court order, regulator action or Polymarket US notice that stops it from serving Maryland as of Oct. 22, 2026. Maryland has one public action on record that names Polymarket US. The latest (Aug. 13, 2026): Baltimore City (a municipality, not the state) sued in the Circuit Court for Baltimore City under its consumer-protection ordinance, alleging unlicensed sports betting; Kalshi removed the case on Aug. 14, 2026. This summarises public actions; it is not legal advice.
- Has Maryland sued Polymarket US or ordered it to stop?
- Not that we have found. We have no cease-and-desist letter, state lawsuit, court order or settlement in Maryland that names Polymarket US, as of Oct. 21, 2026.
- How old do you have to be to use Polymarket US in Maryland?
- 18. That is Polymarket US's minimum age, and it lists no different rule for Maryland.
- Is sports betting legal in Maryland?
- Legal online. Retail and mobile sports betting; mobile launched Nov. 23, 2022.
- Which court will decide whether Maryland can regulate Polymarket US?
- Federal appeals from Maryland go to the Fourth Circuit, which heard argument on May 7, 2026 and has not yet ruled. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.