St. Mary's County Government

GIS data is provided 'as is'. The maps and data provided are provided for illustration purposes only, and are not suitable for site-specific decision making. St. Mary's County specifically disclaims any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular use. The entire risk as to quality and performance is with the user of the data. In no event will St. Mary's County or its staff be liable for any direct, indirect, incidental, special, consequential, or other damages, including loss of profit, arising out of the use of these data even if St. Mary's County has been advised of the possibility of such damages.

Online Mapping

Aerial Only Map - This Map is created for those who want to view the Aerial Photography taken in April of 2007 without having to remove additional data layers.

Emergency Management Map - The Emergency Management Map contains the fire districts and fire and rescue calls over the last couple of years.

Historic Sites Map - The Historic Sites Map has many features to locate many Historical sites in St Mary's County and link to their site's individual web pages. You can also view a historical 1976 bi-centennial map along with the 1998, 2003 and 2007 Aerial Photographs.

Park & Public Landings Locator Map - The Parks & Public Landing Locator Map lists all of the County and State Parks. This site also has a way to link to the County and State Parks individual webpages. So get the family together and visit one of our fantastic Parks and Public Landings.

Zoning Ordinance Map - The Land Use & Growth Management Zoning Map has all of the data and functionality of the previous Zoning Map with the addition of the 2ft Contour layers and Search and Street Locator tools.

Downloadable Layers

100yr Floodplain

1993 Building Outlines in 100yr Floodplain

2007 Building Outlines

Centerlines

Coastal Barrier Resource System for federal flood insurance

Flood Elevation for Non-Tidal Floodplains

Floodway Boundary

Leonardtown City Boundary

Md Counties

Ortho Photos Center

Ortho Photos North

Ortho Photos South

St Mary's County Outline

St Mary's Property Boundary

St. Mary's County Road Network (centerlines)

St. Mary's County Schools

St. Mary's nontidal Wetlands

St. Mary's Semipermanent Seasonal Tempory Tidal Wetlands

St. Mary's Streams

St. Mary's Tidal Wetlands

St. Mary's Topo Boundary

St. Mary's Watersheds

SWM Locations

TOPO North Central County 2' Contour

TOPO North County 2' Contour

TOPO South Central County 2' Contour

TOPO South County 2' Contour

Zoning Layer

Map Changes, Updates, and Ordering Information

Your feedback is very important! If you find any Mapping Applications not functioning properly, please contact St. Mary's County at our feedback page to inform us of any problems. To order additional GIS data.