Boundary Commission

St. Louis County, MO

"The Boundary Commission is responsible for the review of proposals affecting the boundaries of incorporated and unincorporated areas in St. Louis County." Learn More Contact Us
Upcoming Meetings monthly

1st Floor Conference Room
231 S. Bemiston
Clayton, MO 63105

Click here for more information

The Map Plan/Proposal Cycle is Now Open!

The Commission will accept Map Plans from January 1 – July 1, 2024 for the current proposal cycle.

Annexation proposals can be submitted from April 15, 2025 – July 1, 2028 by those municipalities who have a 2024 map plan on file.

View information regarding the consolidation process for municipalities in St. Louis County.

User Accounts available!

Users can register for an account. This allows users to be notified when updates are made to meetings, proposals, and/or map plans to which they’re subscribed.

More details on the benefits of having a User Account can be found by clicking the link.

Interested in serving on the Boundary Commission? There are currently three Joint Appointment vacancies. To apply for a St. Louis County seat when there’s an opening, visit here to fill out their application. If interested in the Joint Appointment seats, send us an email