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
info@boundarycommission.com
St. Louis County Department of Planning
Annexation Information
Phone 314-615-2520
lfiegel@stlouisco.com