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Welcome to Key Cannabis Dispensary in O’Fallon, MO! Take advantage of our convenient drive-thru and online ordering for easy access to top-quality cannabis products. Located on State Road North off exit 364 from Hwy K, we proudly serve O’Fallon with a comprehensive selection of medical and recreational cannabis. Our inventory includes a wide variety of cannabis strains, pre-rolls, vapes & carts, concentrates, edibles, tinctures, CBD, and more. Whether you're seeking relief or relaxation, our knowledgeable and friendly budtenders are here to guide you through our offerings and provide personalized recommendations. At Key Cannabis Dispensary O'Fallon, we strive to create a welcoming and inclusive environment for all our customers.
Brendon G at Key dispensary was awesome. I am an old dude new to cannabis, and he answered all my newb questions about terpenes and aroma and everything else. Highly recommended.
GM
Gary Meyer
Oct 11, 2025
5.0
Amy was polite, knowledgeable and very pleasant.
TO
Toni ODell
Oct 10, 2025
5.0
I've been goining there since they first opened for medical marijuana sales. I've had some great bud tenders along the way and Terran is now considered one of them. Terran...you're awesome!
KJ
Kathi Jennnings
Oct 8, 2025
5.0
Max was very knowledgeable and helped me make great decisions on products!
MM
Mike
Sep 27, 2025
1.0
Went to the creve coure store and it was closed, I was just there the day before and nothing was said. Strange place even when it was HOME STATE seemed a bit shady