Is Polymarket US legal in Washington?
Yes. Polymarket US is available in Washington. 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 Washington, 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 |
State action in Washington
No state action against Polymarket US in Washington on record as of November 4, 2026.
Kalshi in Washington
Kalshi still operates in Washington, but sports event contracts, election and politics markets, and entertainment markets are geofenced out of the state under a court order in force since August 5, 2026 β so it is not a sports alternative here. Other markets are not named in the order. Is Kalshi legal in Washington? β
Frequently Asked Questions
Is Polymarket US legal in Washington?
Polymarket US is available in Washington. 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.
Can you use Polymarket US in Washington?
Yes, if you meet the age and identity checks at sign-up. Polymarket US is available in Washington, per Polymarket US.
Is Polymarket US banned in Washington?
We have no state action against Polymarket US in Washington on record. 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 Washington?
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 Washington?
Kalshi still operates in Washington, but sports event contracts, election and politics markets, and entertainment markets are geofenced out of the state under a court order in force since August 5, 2026 β so it is not a sports alternative here. Other markets are not named in the order.
Can I use Polymarket.com from Washington?
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 Washington?
18 or older, with identity verification at sign-up.
Not legal advice. This page reports what Polymarket US and Washington officials have said and done, with the date we last checked each source. Check the Polymarket App for eligibility before you sign up.