CO / State law overview

Colorado

Colorado’s current criminal code distinguishes adult possession of marijuana from larger quantities, public use, and underage possession.

Adult possession allowed within limits

Sources reviewed September 30, 2026. Coverage: Selected adult possession and public-use rules, not all legal questions.

Adult possessionFor adults 21+, the general marijuana possession offense starts above 2 ounces; concentrate rules differOfficial source

Underage possessionUnder 21, possession of 2 ounces or less is an offense, subject to medical exceptionsOfficial source

Public display and useOpen and public display, consumption, or use is restricted; licensed hospitality premises have specific exceptionsOfficial source

Details worth checking

This is a limited criminal-code summary, not a purchase-limit or home-grow guide. Medical, concentrate, retail, property, and local requirements need separate review.
The linked 2026 compilation is published by Colorado’s Office of Legislative Legal Services and linked from the General Assembly’s official download page.

Official sources

Regulators & contacts

Agency information checked September 30, 2026.

Colorado Department of Revenue — Marijuana Enforcement Division (MED)

Regulates licensed medical and adult-use marijuana businesses, inventory tracking, and compliance. Local business approvals may also be required. Use the official inquiry form for licensing questions.

Colorado Department of Revenue — Marijuana Enforcement Division (MED) — official information and contact routes

Colorado Department of Public Health and Environment — Medical Marijuana Registry

Administers patient registration and medical marijuana cards separately from MED’s business licensing work.

Colorado Department of Public Health and Environment — Medical Marijuana Registry — official information and contact routes

Cardcierge

Medical cannabis card information, registration, published fees, and evaluation providers for Colorado.

View medical card information

General information, not legal advice. Laws, effective dates, and local policies change. Confirm the applicable rules with official sources before acting.