Boundary Commission Five-year Cycle

Important Meeting Dates

January 1 - July 1, 2012
Municipalities in St. Louis County may file a “map plan” showing areas they might potentially annex during a five-year period

August 1 - December 31, 2012
Public hearings are held during which citizens may provide comments on the map plans submitted by municipalities and St. Louis County 

August 1, 2012 – April 15, 2013 
The Boundary Commission may request municipalities and/or St. Louis County to amend their map plans

April 15, 2013 – July 1, 2016
Municipalities that have filed map plans may submit annexations proposals

April 1, 2017
End of Boundary Commission review period for proposals submitted July 1, 2016

St. Louis County Boundary Commission
168 N. Meramec Avenue, Suite 140
Clayton, Missouri 63105
Phone    314-863-3005
[email protected]

St. Louis County Department of Planning
Annexation Information
Phone    314-615-2520
[email protected]

Quick Links

    E-notifications-coming soon

    Online Mapping


    Regional Resources:

        Citizens for Modern Transit
        East West Gateway 
        Focus St. Louis
        Great Rivers Greenway
        Municipal League



Department of Planning
St. Louis County Government
41 S. Central Avenue, 5th Floor
Clayton, Missouri 63105

Phone   314-615-2520
Fax  314-615-3729
[email protected]