Cannabis Regulations in St. Louis County, MO (2026)
3 county-level rules, plus city-specific rules for 1 city in St. Louis County, Missouri.
Verified from official government sources
Dispensary Zoning
St. Louis County has not opted out of marijuana dispensaries: its zoning code lists them as a by-right permitted use in the C-2 and C-3 commercial districts. A site that clears both distance buffers needs only a standard permit; one that clears the school buffer but not the 500-foot dispensary/liquor-store buffer drops into a conditional-use review instead.
St. Louis County Cannabis Dispensary Zoning
Some RestrictionsSt. Louis County Code §§ 1003.133.2(10), 1003.133.3(13)
(10)Marijuana dispensary facility, provided no marijuana dispensary facility shall be located within one thousand (1,000) feet of any then-existing elementary or secondary school, childcare center, or place of worship, nor within five hundred (500) feet of any then-existing marijuana dispensary facility or any then-existing package liquor store (See section 1003.167 "Miscellaneous Regulations" ...
Buffer Zones
A marijuana dispensary in unincorporated St. Louis County must clear two hard buffers to open as a permitted use: 1,000 feet from any existing school, childcare center, or place of worship, and 500 feet from any existing dispensary or package liquor store. The county measures both distances along the shortest path a person can actually walk, not a straight line.
St. Louis County Marijuana Dispensary Buffer Zones
Some RestrictionsSt. Louis County Code §§ 1003.135.2(12), 1003.167.21
(12)Marijuana dispensary facility, provided no marijuana dispensary facility shall be located within one thousand (1,000) feet of any then-existing elementary or secondary school, childcare center, or place of worship, nor within five hundred (500) feet of any then-existing marijuana dispensary facility or any then-existing package liquor store (see Section 1003.167 "Miscellaneous Regulations" ...
Personal Cultivation Limits
Missouri's Constitution lets any adult twenty-one or older register with the Department of Health and Senior Services to grow marijuana at home, including in unincorporated St. Louis County. A registration card permits up to six flowering plants, six nonflowering plants over fourteen inches, and six clones, but no more than twelve flowering plants total at one residence, and every plant must stay locked up and hidden from public view.
Home Marijuana Cultivation Limits in St. Louis County
Some RestrictionsMissouri Constitution Article XIV, Section 2.4(24)
(24) Except for good cause, a person at least twenty-one years of age may obtain a registration card from the department to cultivate up to six flowering marijuana plants, six nonflowering marijuana plants (over fourteen inches tall), and six clones (plants under fourteen inches tall) for non-commercial use, provided: (a) The plants and any marijuana produced by the plants in excess of three ou...
Cannabis Regulations by City in St. Louis County
1 cities in St. Louis County have their own cannabis regulations rules. Each link goes to that city's dedicated page with code citations.
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