Is Polymarket US legal in Illinois?
Yes. Polymarket US is available in Illinois. Polymarket US told us in writing on October 23, 2026 that it is available in every state except Nevada. This page reports what Polymarket US and the state have done; it is not a legal conclusion, and courts are still deciding how state law applies to event contracts.
Verified October 23, 2026
Polymarket US in Illinois, by market class
| Market class | Status | Source | Verified |
|---|---|---|---|
| sports event contracts | Available | Polymarket US (operator) | October 23, 2026 |
| election and politics markets | Available | Polymarket US (operator) | October 23, 2026 |
| economics markets | Available | Polymarket US (operator) | October 23, 2026 |
| weather markets | Available | Polymarket US (operator) | October 23, 2026 |
| entertainment markets | Available | Polymarket US (operator) | October 23, 2026 |
Illinois races on Kalshi and Polymarket US, after fees
as of Oct 24, 3:00 PM ET · ask + taker fee, per contract| Race · contract | Kalshi | Polymarket USPolymarketPartner | Cheaper |
|---|---|---|---|
| Illinois Senate · Juliana Stratton | 99.1¢ | 98.1¢ | Polymarket US · $0.93/100 |
Polymarket US is the venue US traders use. Ranked by Kalshi volume; badged by price only. Where it’s cheapest today →
Kalshi in Illinois
Kalshi remains available to Illinois traders today as a CFTC-regulated exchange covering sports and many other markets, though the state is contesting its sports event contracts in court and that could change. Is Kalshi legal in Illinois? →
Frequently Asked Questions
Is Polymarket US legal in Illinois?
Polymarket US is available in Illinois. Polymarket US told us in writing on October 23, 2026 that it is available in every state except Nevada. This page reports what Polymarket US and the state have done; it is not a legal conclusion, and courts are still deciding how state law applies to event contracts.
What can I trade on Polymarket US in Illinois?
All five: sports event contracts, election and politics markets, economics markets, weather markets, and entertainment markets. Polymarket US has not given us class-level detail by state, so this follows its statewide line.
Is Kalshi available in Illinois?
Kalshi remains available to Illinois traders today as a CFTC-regulated exchange covering sports and many other markets, though the state is contesting its sports event contracts in court and that could change.
Can I use Polymarket.com from Illinois?
No. Polymarket.com is the international site and is view-only for US users; US traders use Polymarket US. Where our pages show Polymarket.com data, it carries the label "US Users: Featured Trade Not Available; Informational Use Only."
How old do I have to be to use Polymarket US in Illinois?
18 or older, with identity verification at sign-up.
Not legal advice. This page reports what Polymarket US and Illinois officials have said and done, with the date we last checked each source. Check the Polymarket App for eligibility before you sign up.