Local Government Planning

St. Mary's County


St. Mary's County is bordered to the north by Calvert County, to the east by the Patuxent River and the Chesapeake Bay, to the west by Charles County, and to the south by the Potomac River. The County seat is in Leonardtown. ​
St. Mary's County Map 

Regional Planning Agency

Tri-County Council for Southern Maryland

Priority Funding Areas (PFA)

View the statewide Interactive PFA Map

Comprehensive Plans

Current Plan / Adoption Date
St. Mary's Master Plan
St. Mary's Land Use Amdenment
Lexington Park Master Plan

Leonardtown CMP-2010

​For a list of the most current adopted plans for St. Mary’s County, please visit the St. Mary’s County Department of Land Use and Growth Management’s Comprehensive Planning webpage or contact local planning staff via the department’s staff directory​ found on the county’s website.  

Disclaimer | Description of Columns | View All Plans

Septic Law Implementation Plans

Jurisdiction Map & Documentation MDP Response
St. Mary's County    

Minor Subdivision Definition Changes​

Disclaimer | Description of Columns | View all Plans

Staff Assignments

Tracey Taylor

Planning Contacts

Michael A. Bailey, Sr.
Planning Coordinator
Planning & Zoning Department
Town Hall
22670 Washington Street
Leonardtown, MD 20650​
Jessica Andritz
St. Mary's County
Land Use & Growth Management
Patuxent Building
23150 Leonard Hall Drive
Leonardtown, MD 20650

Human Trafficking GET HELP

National Human Trafficking Hotline - 24/7 Confidential

1-888-373-7888 233733 More Information on human trafficking in Maryland

Customer Service Promise

The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services.

Take Our Survey

Help Stop Fraud in State Government

The Maryland General Assembly’s Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. Information reported to the hotline in the past has helped to eliminate certain fraudulent activities and protect State resources.

More Information