The Maryland Department of Natural Resources, Maryland Geological Survey features county topographical maps for Maryland that have been reprinted.

The Maryland State Archives also holds a large collection of plats, atlases, and maps for the state. Many of those maps have tract and owner indexes available as well.

The Maryland Historical Society has a large collection of maps on file as well. Most counties also have historical societies and collections that include useful county maps, some of which have been published.

The University of Maryland Library map collection has a large collection of more than 2,500 maps depicting Maryland, the Chesapeake Bay, and the surrounding region from 1590 to the present.

The collection contains many rare early maps of Maryland as well as more modern maps produced by state and local governments. Some selected maps have been digitized and are available on this site. The rest of the map collection can be viewed in the Maryland Room. For more information about this collection, visit the Guide to Maryland Maps.

College of Arts and Sciences at The University of Alabama

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Choosing the Best Maryland Map – If you have a large source of maps to choose from, try starting with the area where your ancestors resided and looking for the maps with the most detail.  You can determine a lot by seeing if the area was still rural or more developed, and how far it was to the nearest city.  This can shed light on your family’s lifestyle and occupation. Were they farmers who lived in the country, or merchants who traveled often to a nearby city?  A map can give you an idea of what occupations were possible.


Solving Research Problems with a Maryland Maps – If you have started your family research, you might have experienced trouble with trying to identify Maryland city borders and names that have changed over the course of time. This can make it difficult to understand where your ancestors’ information is kept.

Because Maryland historic maps were usually commissioned by the county seat, they often display information about the county, including town names. Reading a Maryland map from the time period you are researching can help tremendously in solving these problems by leading you to the correct town records. It can also give you other leads, such as the location of city directories or old post offices in Maryland.

Some Historical Maps of Maryland can indicate who owned specific property in the state and which towns held the county seat at the time. This information is a valuable starting point for your research pointing you to the right location of records.

Maryland Altlases

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