Maryland Map & Atlas Guide

Some Historical Maryland Map 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.

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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.

Maryland Map of Counties

Maryland Map of Counties

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.

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.

Maryland Map of County Formations For The Years 1637-1997

These Maryland maps shows the historical changes to Maryland counties from 1637 to 1997. This Interactive Maryland map is made with the use AniMap Plus 3.0 & with the Permission of the Goldbug Company.

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Maryland Map Abbreviations
unorg. = unorganized
g. = gained
w. = with
fr. = from
atmt. = attachment
exch = exchanged
nca.= non county area
ch. = changed
AA   - Anne Arundel
AL   - Allegany
Ba   - Baltimore
BC   - Baltimore City
Cal - Calvert
Ce   - Cecil
Cha - Charles
Cln - Caroline
Crl - Carroll
Do   - Dorchester
Fr   - Frederick
Ga   - Garrett
Ha   - Harford
Ho   - Howard
Ke   - Kent
Mo   - Montgomery
PG   - Prince George's
QA   - Queen Anne's
SM   - St. Mary's
So   - Somerset
Ta   - Talbot
Wa   - Washington
Wi   - Wicomico
Wo   - Worcester

Maryland Maps & Atlases

1836 Maryland MapThe David Rumsey Historical Maryland Map Collection is scanned from original copies so you can see Maryland as our ancestors saw them over a hundred years ago.

Some Maryland map years (not all) have cities, railroads, P.O. locations, township outlines and other features useful to the Maryland researcher.

Maryland Map of D.O.T. County Road and Highway’s

Maryland County DOT MapThe Maryland Department of Transportation is pleased to provide highly detailed county maps online. These maps contain more detailed information about man-made features than the geological survey maps. In addition to roads and boundaries, these maps include rural communities, churches, and cemeteries.

These maps are downloadable and are in PDF format. The main use of these are the locations of all known cemeteries in a county and of course the various roads and church locations. These Maps are Free to Download

Maryland Map of D.O.T. Town Road and Highway’s

Please Note: The Town Maps range in file size from 109kb to10.3MB; as such, the file for the Town Map that you select may take a few minutes to display fully, please be patient while the file downloads.

The Town Maps on this page are for Maryland’s incorporated towns only. An incorporated town has its own government and defined municipal boundaries. Most commonly, towns are incorporated by acts of the Maryland General Assembly, although sometimes towns are incorporated by referendum.

To view, download, or print PDF files, you must have Adobe Reader installed on your computer. Click a town’s link to display its map. Note: Baltimore City, Baltimore County, and Howard County have no incorporated towns.

External Maryland Map Links

  • The Huntingfield Map Collection
  • Maryland Map Books
  • An Illustrated Genealogy of the Counties of Maryland and the District of Columbia (Silver Spring, Md.: the author, 1967) includes maps that show the county changes and also ward maps of Baltimore for 1850, 1860, 1870, and 1880.
  • Atlas of Historical Maps of Maryland, 1608–1908, revised with the new title The Maryland State Archives Atlas of Historical Maps of Maryland, 1608–1908 (Baltimore: Johns Hopkins University Press, 1982, 2003)

U.S. State Map Guides