St. Charles County, MO Soliciting & Door-to-Door: No-Knock Registry (2026)

Section 606.170 puts this decision in the hands of the owner or occupant rather than the County. There is no complaint to file, no list to sign up for, and no officer to wait on. The code says every owner or occupant who desires to prevent peddling and soliciting on their property shall comply with a short set of posting requirements, and once those are satisfied the ban runs on its own.

The requirements describe a sign built to survive a St. Charles County winter and be read from the walk. The card must be weatherproof, measure at least 3 by 4 inches, and carry lettering at least 2 inches high. It goes upon or near the main entrance door to the building, which is the door a solicitor would actually approach, not a side gate, a driveway post, or a mailbox out at the curb. The County supplies the cards at no charge through the County Registrar, the same office that issues peddler and solicitor licenses, so a resident is not left to fabricate a compliant sign in order to get the protection.

The wording is fixed. The provision keys off a card containing the words "No Solicitors Invited," so the notice has to say that rather than something improvised. Once it is displayed, a person engaging in the business of peddling or soliciting, whether licensed under Chapter 606 or not, shall immediately and peacefully depart from the premises. Both halves of that phrase do work. Departure is not something the caller gets to postpone until a pitch is finished, and a solicitor who argues at the door, blocks it, or refuses to go has not complied. Holding a County license is no answer: the license permits someone to work the unincorporated county generally, while the posted card removes your particular address from that permission.