Marijuana Laws
As recorded December 15, 2025 · not verified as current law. Colorado law
Cannabis laws in Castle Rock follow Colorado’s state law. Local variations are uncommon—jurisdiction law sets the baseline for legality and penalties.
Recreational cannabis is legal for adults 21 and older under state law. Medical cannabis is available with registration. Cannabis remains illegal under federal law, so legal risk may still exist in certain contexts. Possession up to 28 grams is permitted.
Quick facts
- Recreational: Legal (adults 21+)
- Medical: Available
- Possession: Up to 28g permitted under state law
- Buying/Selling: Legal from licensed retailers
- Tourists: Subject to same rules; federal risks remain
Practical guidance
Avoid cross-border transport of cannabis products. Do not assume informal tolerance equals legality.
Legislative History
Colorado became one of the first U.S. states to legalize recreational cannabis in 2012 via Amendment 64, permitting adults 21+ to possess up to one ounce (28 grams), cultivate up to six plants (three mature), and purchase from licensed retailers. Medical cannabis was legalized earlier in 2000 through Amendment 20, establishing a patient registry system.
Law Enforcement
Castle Rock officers were said to focus more on amounts around an ounce or above. Colorado has since changed its adult-use rules, as covered in Marijuana Laws.
Where to Buy Marijuana
The park south of the high school and the northwest corner of the King Soopers parking lot were the two daytime spots mentioned.
Marijuana Prices
- Chronic: US$50 for an eighth
- Tendies: US$25 for an eighth
- Schwag: US$15 for an eighth