Is Psilocybin Legal in United States?

⚠️ Not Legal Advice

This page is for educational purposes only and does not constitute legal advice. Drug laws change frequently and vary by region within a country. Always verify the current status with the U.S. Drug Enforcement Administration (DEA) drug scheduling page (https://www.dea.gov/drug-information/drug-scheduling) or a qualified local lawyer before making any decisions. The patchwork of federal, state, and city law in the US means the same act (carrying dried mushrooms) can be a civil infraction in Denver, a licensed legal activity at an Oregon service center, and a felony in a neighboring state — all at the same moment. Do not assume protection extends across state lines.

Last reviewed: July 2026. This entry is drawn from Psilobase's broader Legal Status by Country guide. Because psilocybin law is an actively moving target worldwide, treat any date-stamped legal claim — including this one — as needing re-verification if you are reading it more than a few months after the review date above.

Quick Answer

No, not at the federal level — psilocybin is a Schedule I controlled substance nationwide. However, Oregon and Colorado have created state-legal frameworks for supervised adult use, and several cities (Denver, Oakland, Santa Cruz, San Francisco, Seattle, Ann Arbor, Detroit, and parts of Massachusetts) have locally decriminalized personal possession. In every other state, possession, cultivation, and sale remain criminal offenses.

Current Legal Status in United States

Federal law: simple possession can carry up to 5 years in federal prison plus substantial fines; trafficking penalties scale steeply with quantity, up to 20 years or more, and life or the death penalty are theoretically possible for extremely large-scale trafficking under federal law. Federal prosecution of individuals engaged in state-legal activity (e.g., using psilocybin at a licensed Oregon service center) is rare in practice, but the activity remains a federal offense — interstate or international transport of any psilocybin material is a separate federal exposure regardless of state law.

Oregon (Measure 109): personal possession has been decriminalized (civil violation only) since Measure 110 in 2020. Separately, Measure 109 created a licensed "psilocybin service center" model: adults 21+ can access supervised psilocybin sessions after a required preparation session, administered by licensed facilitators, without a medical prescription or diagnosis requirement. Supply of psilocybin outside this licensed system remains a state crime.

Colorado (Proposition 122): adults 21+ may legally possess, use, and gift (not sell) psilocybin and several other natural psychedelics. Licensed "healing centers" offering supervised use began operating in 2025. Commercial sale outside the licensed system remains illegal and can be prosecuted.

Decriminalized cities: in Denver, Oakland, Santa Cruz, San Francisco, Seattle, Port Townsend, Ann Arbor, Detroit, Somerville, Cambridge, and Northampton, local police have made enforcement of personal psilocybin possession/cultivation their lowest priority (via resolution or ballot measure) — but state law in California, Washington, and Massachusetts still technically classifies possession as a criminal offense outside these specific city boundaries, so the protection is narrow and enforcement-dependent, not a change in state statute.

All other states: penalties vary considerably — from misdemeanor charges (up to 1 year) in some states to felony charges (5+ years) in others, with harsher exposure for cultivation or any quantity suggesting distribution. Always check the specific state's controlled substances schedule.

History: How the Law Got Here

Psilocybin and psilocybin-containing mushrooms have been Schedule I substances under the federal Controlled Substances Act since 1970 — the classification reserved for drugs deemed to have no accepted medical use and a high potential for abuse. That federal status has not changed. What has changed is state and municipal policy: Denver, Colorado became the first US city to decriminalize psilocybin mushrooms in May 2019, followed by Oakland and Santa Cruz (California) later that year, and subsequently Ann Arbor and Detroit (Michigan), Somerville, Cambridge, and Northampton (Massachusetts), Seattle and Port Townsend (Washington), and others. In November 2020, Oregon voters passed Measure 109, creating the nation's first state-regulated framework for supervised psilocybin services, with licensed service centers opening from 2023. In November 2022, Colorado voters passed Proposition 122 (the Natural Medicine Health Act), legalizing personal possession, use, and gifting of psilocybin (plus psilocin, DMT, ibogaine, and non-peyote mescaline) for adults 21+, with licensed "healing centers" beginning operation in 2025.

How to Verify This Yourself

Laws referenced on this page were last reviewed in July 2026. Before making any decision based on legal status, check directly with the U.S. Drug Enforcement Administration (DEA) drug scheduling page: https://www.dea.gov/drug-information/drug-scheduling. For broader cross-country comparison and additional official sources (DEA, Home Office, Health Canada, TGA, EMCDDA, etc.), see the full Legal Status by Country guide.