IL · Polymarket US · Checked Oct. 21, 2026
Is Polymarket US legal in Illinois?
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 Illinois as of Oct. 22, 2026.
Illinois has 2 public actions on record that name Polymarket US. The latest (April 2, 2026): The United States and the CFTC sued Illinois in federal court, arguing federal law preempts state enforcement against CFTC-registered exchanges.
Federal appeals from Illinois go to the Seventh Circuit, where an appeal on the question is pending.
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 Illinois?, Prediction Market Laws (last updated Oct. 22, 2026), https://predictionmarketlaws.com/platforms/polymarket/illinois.
APA
Prediction Market Laws. (2026, October 22). Is Polymarket US Legal in Illinois?. https://predictionmarketlaws.com/platforms/polymarket/illinois
What Illinois has done about Polymarket US
Other development
The United States and the CFTC sued Illinois in federal court, arguing federal law preempts state enforcement against CFTC-registered exchanges.
Source: Vultax lawsuit tracker
Cease-and-desist
The Gaming Board sent Polymarket a cease-and-desist letter.
Court cases
We track no case between Polymarket US and Illinois.
The legal backdrop in Illinois
- 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 onlineOnline and retail sports betting regulated by the Illinois Gaming Board.
- Federal appeals court
- Seventh CircuitAppeal pending.
- Who regulates
- Illinois Gaming Board; Office of the Illinois Attorney General
- Laws and bills
- 5 on record
Using Polymarket US in Illinois
- 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 Illinois
- 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 Illinois?
- 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 Illinois as of Oct. 22, 2026. Illinois has 2 public actions on record that name Polymarket US. The latest (April 2, 2026): The United States and the CFTC sued Illinois in federal court, arguing federal law preempts state enforcement against CFTC-registered exchanges. This summarises public actions; it is not legal advice.
- Has Illinois sued Polymarket US or ordered it to stop?
- Yes. Jan. 27, 2026: The Gaming Board sent Polymarket a cease-and-desist letter.
- How old do you have to be to use Polymarket US in Illinois?
- 18. That is Polymarket US's minimum age, and it lists no different rule for Illinois.
- Is sports betting legal in Illinois?
- Legal online. Online and retail sports betting regulated by the Illinois Gaming Board.
- Which court will decide whether Illinois can regulate Polymarket US?
- Federal appeals from Illinois go to the Seventh Circuit, where an appeal on the question is pending. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.