O'Fallon, MO Cannabis Regulations: Buffer Zones (2026)
Key Facts
- Buffer from schools/daycare/church
- 750 feet
- Buffer between like facilities
- 1,500 feet
- Pharmacy exception threshold
- under 5% of dollar sales
- Manufacturing exemption
- I-1/I-2 districts, common ownership
- Measurement method
- shortest walkable path
Summary
O'Fallon keeps marijuana cultivation, manufacturing and dispensary facilities at least 750 feet from any existing school, licensed daycare or church, and 1,500 feet from another marijuana facility of the same type, under Zoning Code Section 400.245(D). A narrow pharmacy exception and an industrial-district carve-out for manufacturing facilities soften the second buffer.
1. No marijuana-related uses shall be operated or maintained within seven hundred fifty (750) feet of any then-existing elementary or secondary school, child daycare center or church. 2. No marijuana-related uses shall be operated or maintained within one thousand five hundred (1,500) feet of another marijuana facility of identical use except when marijuana sales represent less than five percent (5%) of the dollar volume of business in a State or Federally licensed pharmacy.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4860992; v58 updated 2026-05-14; through 05-14-2026).
Full Breakdown
245(D) sets two separate distance rules. The first bars any marijuana-related use within 750 feet of a then-existing elementary or secondary school, child daycare center, or church, measured along the shortest legally walkable path between the closest exterior wall of the marijuana facility and the nearest property line of the protected use, or to its entrance if it sits inside a larger building like an office or strip mall. The second bars locating within 1,500 feet of another marijuana facility of identical use, unless marijuana sales make up less than 5% of the dollar volume at a State- or Federally-licensed pharmacy.
Two exceptions apply to the 1,500-foot rule: marijuana-related uses under common ownership on the same property are exempt, and marijuana-infused products manufacturing facilities in the I-1 and I-2 Industrial Districts can sit closer than 1,500 feet to each other. 201, RSMo.
Violations & Fines
A dispensary, cultivation, manufacturing or testing facility sited inside either buffer violates Section 400.245(D) and is enforced under Chapter 400's general penalty schedule at Section 400.655: graduated fines from $200 for a first violation in a twelve-month period to $450 for a fourth or subsequent violation, plus court costs, with a further $250 civil penalty for failing to correct the violation within ten days of an order.
Frequently Asked Questions
How far must a marijuana dispensary be from a school in O'Fallon?
Can two marijuana dispensaries be close to each other?
Does the 1,500-foot buffer apply between different types of marijuana facilities?
Sources & Official References
Other rules in O'Fallon
Compare O'Fallon to another location·View the Missouri cannabis regulations overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.