Maryland Maps

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Why use maps?

Maps are used to locate the places where your ancestors lived. They identify political boundaries, names of places, geographical features, cemeteries, churches, and migration routes. Historical maps and atlases are especially useful for finding communities that no longer exist.

MD counties and county seats

Record coverage

Before searching you must know

  • The names of places where your ancestor lived. Place names change over time. Use a Maryland gazetteer or United States gazetteer to find alternate names of the places where your ancestor lived.

Reliability of maps

Maps improved over time as surveying tools improved. Even though early or primitive maps may not be correct in terms of scale or relative positioning, they are still a good source of the names people used for various jurisdictions and geographic features.


  • Search maps that were published as close as possible to the time period when your ancestor lived in the area.
  • Names of places change over time. If you cannot find on a map the place where your ancestor lived (such as a town), check gazetteers published before and after your ancestor lived there to see whether the town had a different name. 

What to do next


Important Dates

Types of Maryland maps and where to get them

Maryland County Maps

Maryland County Formation Maps.  This site will show every change in county boundries from 1637 to the present day in an online map.  It shows a map and gives details about each change and the year the change took place. 

United States Census Bureau State and County Map  This map from the US Census Bureau is a Nation wide county map.  You can search for counties by name and can zoom in and see counties and neighboring counties even in other states.

Maryland Map Resources

  • Johns Hopkins University, the Enoch Pratt Free Library, the University of Maryland, and the Maryland State Archives have large collections of Maryland maps and atlases. A helpful historical atlas is:
  • Papenfuse, Edward C., and Joseph M. Coale. The Hammond-Harwood House Atlas of Historical Maps of Maryland, 1608-1908. Baltimore, Maryland: Johns Hopkins University Press, 1982. (Family History Library book Q 975.2 E7p; film 1597909 item 18.)
  • Maps that show the county boundaries at the time the U.S. censuses were taken are in:
  • Thorndale, William, and William Dollarhide. Map Guide to the U.S. Federal Censuses, 1790-1920. Baltimore, Maryland: Genealogical Publishing Co., 1987. (Family History Library book 973 X2th.) A limited view of this book is online.
  • Baltimore City ward maps that correspond roughly with the censuses of 1820 to 1900 are on Family History Library film 1377700 and Family History Library fiche 6016568-76 .
  • For 7.5-, 15-, and 30-minute topographic quadrangle maps for Maryland published between 1884 and 1972 use the:
  • United States Geological Survey. Topographic Maps of the United States. Suitland, Maryland: National Archives and Records Service, 1976. The maps are arranged alphabetically by the name of the quadrangle on the following films:
Aberdeen-Flintstone Family History Library film 1433784
Gunpowder-Myersville Family History Library film 1433785
Paw Paw-Urbana Family History Library film 1433786
Wyoming Family History Library film 1433783
  • Film numbers for additional and more recent topographical maps are listed in the Locality Search of the Family History Library Catalog under UNITED STATES - MAPS.
  • To see changes in county boundaries, use: Long, John H., ed. Delaware, Maryland, District of Columbia atlas of Historical County Boundaries. New York: Charles Schribner’s Sons, 1996. (Family History Library book 975 E3L.) This volume is part of a proposed 40-volume reference work under the common title “Atlas of Historical County Boundaries.” It intends to trace boundary changes from the earliest date to 1990, leaving no gaps. It also intends to provide a frame of reference for understanding boundary changes.
  • Also see: Maryland, Delaware Atlas and Gazetteer. DeLorme Mapping. 4th ed., Freeport, Maine: DeLorme, 2004. (Family History Library book 975 E7md .)
  • The Place Search of the Family History Library Catalog lists more maps under:
  • Selected Maryland Out-of-print historical maps can be viewed online at Historical Maps of Maryland.
  • Printable maps are also available from the National Atlas of the United States
  • Detail of Maryland's regions

See Also 

Maryland Gazetteers | United States Maps