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St. Charles County, MO Cannabis Regulations: Dispensary Zoning (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Opt-out status
Not opted out; 3% local tax
Location requirement
Permanent address only
Drive-through
Prohibited
Dispensary hours
8 a.m. to 8 p.m.
Approval needed
Zoning Confirmation + County license
Violation penalty
Up to $1,000/day, misdemeanor

Summary

St. Charles County has not opted out of hosting marijuana facilities: it taxes adult-use sales at 3% under § 140.100 and instead zones them through a permit process. Every Facility must sit at a fixed, permanent address and pass a Zoning Confirmation before opening, per §§ 405.5072(A) and 405.5073, on top of the 1,000-foot buffer from schools, churches and homes.

These county ordinances apply to unincorporated areas of St. Charles County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

A. Except as provided by Section 277.510, each Facility shall be operated from a permanent location, and no Facility shall be permitted to deliver or operate from a movable, mobile, or transitory location. ... Section 405.5073. Compliance Required For Zoning Confirmation. Any proposed location for a Facility must be in compliance with the provisions of Chapter 405 OSCCMo., including but not limited to Section 405.5071 of this Article, before a Zoning Confirmation may be issued in accordance with Chapter 277 OSCCMo.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4863880; v61 updated 2026-05-11; through 05-11-2026).

Full Breakdown

Missouri's Amendment 3 (2022) let local governments regulate but not ban licensed marijuana businesses outright, and St. Charles County chose to zone rather than exclude them. 510, which separately bans drive-through lanes and windows at any Facility. , seven days a week. 5072, before the County will issue a Zoning Confirmation under Chapter 277's separate business-licensing track. In effect, a marijuana business needs two approvals: a Chapter 277 County license and a Chapter 405 zoning sign-off, and it cannot get the license without the zoning sign-off first.

St. Charles County's approach is a location filter, not a ban: the County Council also imposed a 3% local sales tax specifically on 'retail sales of adult use marijuana sold in St. 100, confirming the County did not opt out of allowing recreational sales.

Violations & Fines

Selling or operating from an unconfirmed location, running a drive-through, or exceeding dispensary hours is a misdemeanor under § 405.5075(A), punishable by a fine of up to $1,000 per day, with each day of the violation a separate offense and the judge setting the specific penalty. The Director of Community Development enforces Article X, with the County Counselor's office handling prosecution and any injunctive action under § 405.5076.

Frequently Asked Questions

Has St. Charles County banned marijuana dispensaries?
No. The County did not opt out of Amendment 3 and instead regulates location: it collects a 3% sales tax on adult-use marijuana under § 140.100 and requires every Facility to clear a Zoning Confirmation and the § 405.5072 buffer rules before opening.
Can a dispensary offer drive-through pickup?
No. Section 277.510 bans drive-through lanes and windows at any medical marijuana Facility in the county, and every Facility, drive-through or not, must operate from a permanent, non-mobile location under § 405.5072(A).
What hours can a dispensary be open?
A Medical Marijuana Dispensary Facility may open no earlier than 8:00 a.m. and must close by 8:00 p.m. the same day, seven days a week, under § 277.520.
What is a Zoning Confirmation and who needs one?
It's the sign-off required under § 405.5073 before any marijuana Facility can get its County business license: the Division of Planning and Zoning confirms the proposed site meets Chapter 405's buffer and location standards, including the 1,000-foot separation from schools, churches and residential zones.

Sources & Official References

Other rules in St. Charles County

All St. Charles County rules

Compare St. Charles County to another location·View the Missouri cannabis regulations overview

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