Is Polymarket US legal in California?
Yes. Polymarket US is available in California. 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 California, 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 |
Kalshi in California
Kalshi remains available to California traders as a CFTC-regulated exchange covering sports and many other markets. Is Kalshi legal in California? β
Frequently Asked Questions
Is Polymarket US legal in California?
Polymarket US is available in California. 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 California?
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 California?
Kalshi remains available to California traders as a CFTC-regulated exchange covering sports and many other markets.
Can I use Polymarket.com from California?
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 California?
18 or older, with identity verification at sign-up.
Not legal advice. This page reports what Polymarket US and California officials have said and done, with the date we last checked each source. Check the Polymarket App for eligibility before you sign up.