6700 State Route N
Saint Charles, MO
63304
Key Cannabis Dispensary O’Fallon
Key Cannabis Dispensary O’Fallon
Key Cannabis Dispensary O'Fallon — Cannabis store in Saint Charles, MO. Located at 6700 State Route N in Saint Charles. Rated 4.6★ from 548 Google reviews. See opening hours, photos, and the latest reviews on CannabisShop.com.
Opening Hours
Monday: 8:00 AM - 9:45 PM
Tuesday: 8:00 AM - 9:45 PM
Wednesday: 8:00 AM - 9:45 PM
Thursday: 8:00 AM - 9:45 PM
Friday: 8:00 AM - 9:45 PM
Saturday: 8:00 AM - 9:45 PM
Sunday: 8:00 AM - 9:45 PM
Loading map when visible…
Reviews
Amanda was very welcoming. It was clear to me that I didnt know what the heck I was doing. She was awesome. Made me feel very comfortable while explaining choices.
- John
December 6, 2025
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.
- Greggers Grunderson
October 23, 2025
Max was amazing! 10/10 would recommend Key and MAX to anyone looking for excellent customer service!!
- A A
January 17, 2026
Love there brand rooted. A good selection of strains offering different terpene profiles for heavy smokers. Staff is always friendly to me haven't had any customer service standoff with them. Drive through is pope
- Jacob West
February 10, 2026
Multiple visits to this dispensary. It is conveniently located and everyone that I have come into contact with here is always so cheerful and kind. Extremely helpful with selections, pricing, add ons, and sales. Its becoming one of my favorites! Thanks for always taking such great care of me!
- Angela Johns
January 16, 2026