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Maryland, United States
latitude: 39.30, longitude: -77.06
Browse Maryland map 39° 18′ 0″ N, 77° 3′ 36″ W
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Maryland is a state in the United States at latitude 39° 18′ 0″ North, longitude 77° 3′ 36″ West.

OpenStreetMap images (and underlying map data) are freely available under the OpenStreetMap License.

Maryland comprises 23 counties and the city of Baltimore. Its capital is Annapolis.

Mapping Resources


Maryland DoIT hosts free and public six inch resolution air photography via iMAP.

JOSM Instructions

Add a new WMTS Layer in the JOSM Imagery Preferences and use the following capabilities URL.

Geographic Information Systems

Maryland, like most states, has online GIS resources.

Natural Resources

All Maryland Department of Natural Resources data is public domain. See the Maryland State Parks imports page for more info. Data available at GIS site.


The Maryland Department of Planning also maintains a GIS site. "Tiger Shape Files for Urban and Rural Designations" from 2010 for Maryland are available for download as a ZIP archive file from this site.


Local mappers have established a Slack channel to discuss issues and interesting things on the map throughout the state of Maryland. The channel is hosted on the OpenStreetMap US Slack, in the #maryland channel. Join the Slack here


There are two active MapTime groups in the area, Maptime Bmore and Maptime DC.

Administrative Boundaries

See Maryland/Administrative Boundaries

State Highways

See Maryland/Highway Relations

State Parks

See Maryland State Parks

Bicycle Routes

See Maryland/Bicycle Routes


Washington_DC suburbs in Maryland
MappingDC for DC Metro area mapping events

County Imports

Anne Arundel Imports
Baltimore County???
Howard County Import

Baltimore City:

Power Network


For waterways shared with Delaware, see Delaware#Waterways