Montgomery County Maps

Montgomery County Planning Department has a Map Library. See also their Geographic Information Systems page.

Montgomery County Department of Geographic Information Systems has a detailed interactive map viewer with multiple data layers; aerial photographs; much more.

Rockville Memorial Library has a small collection of historic maps, mostly of Montgomery County. The collection includes topographic maps and has a rudimentary index.

Maryland Maps

Maryland Department of Planning State Data Center Maps & GIS

Maryland State Archives provides plat maps at plats.net. You must send an email to geoserv@mdarchives.state.md.us to request a username and password.

Federal Maps

U.S. Census Bureau - Thematic maps, which show statistical data, such as population or median income, displayed as color-coded areas, and Reference maps, which show geographic boundaries for an area along with orienting features

U.S. Geological Survey - Topographical and geological maps; aerial photographs; satellite images.

Historical Maps

Sanborn Fire Insurance Maps from the Library of Congress

Maps for Students and Teachers

Zoom into Maps from the Library of Congress

Free outline and blank maps from d-maps.com

Maps from our online research resources

History Reference Center - Full text from history reference books and periodicals. Plus historical documents, biographies, images, maps, and video. From EBSCO.

History Resource Center U.S. - Reference articles, journal articles, primary sources, maps, and charts. From Gale/Cengage.

History Resource Center World - Reference articles, journal articles, primary sources, maps, and charts. From Gale/Cengage.

And, of course, not to leave out

Google Maps, Google Earth, Google Moon, Google Mars