St. Charles County, MO Sign Regulations: Garage Sale Signs (2026)
Key Facts
- Max sign size
- 4 square feet
- Signs allowed
- One per residence
- Early posting
- 1 day before sale max
- Removal deadline
- Within 24 hours after sale
- Responsible party
- Person conducting the sale
Summary
St. Charles County limits garage sale signs to one 4-square-foot sign per residence, posted no more than a day early and removed within 24 hours after the sale ends.
On-premise signs advertising general sales of personal property operated by private individuals: a. No sign shall be exhibited for more than one (1) day prior to the day such sale is to commence. Signs must be removed within twenty-four (24) hours of the close of such sale. The person(s) responsible for conducting such sale shall be responsible for removing such signs. b. One (1) sign not more than four (4) square feet shall be permitted to be displayed on the property of the residence where the sale is being conducted.
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
Under UDO Section 405.480(C)(3), a homeowner running a garage or yard sale may post one on-premise sign advertising the sale, but it can't exceed four square feet and can't go up more than one day before the sale starts. The person running the sale is on the hook for taking the sign down; it has to come down within 24 hours after the sale closes. The rule sits under the county's list of signs not requiring permits, so no permit application is needed, but the size and timing limits are enforced by the Division of Planning and Zoning like any other zoning sign standard.
Violations & Fines
Violating the size or timing limits is a zoning code violation enforced by the Division of Planning and Zoning; the county can order the sign removed and cite the resident conducting the sale.
Frequently Asked Questions
Can I put up my garage sale sign early?
How big can a St. Charles County garage sale sign be?
Sources & Official References
Other rules in St. Charles County
Compare St. Charles County to another location·View the Missouri sign regulations overview
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