Old Historical State, County and City Maps of Ohio
Maps of Ohio
Most historical maps of Ohio were published in atlases. The French first explored the area that is now Ohio in 1669. After the French and Indian Wars Ohio became the property of Great Britain. The United States didn’t acquire Ohio until 1783, after the Revolutionary War.
The United States created the Northwest Territory under the Northwest Ordinance of 1787. In 1788 Marietta was established as the first white settlement, and later it became the Northwest Territory’s capital.
Following the Ohio Company, the Miami Company (also referred to as the “Symmes Purchase”) claimed the southwestern section, and the Connecticut Land Company surveyed and settled the Connecticut Western Reserve in present-day Northeast Ohio.
The old Northwest Territory originally included areas previously known as Ohio Country and Illinois Country. As Ohio prepared for statehood, the Indiana Territory was created, reducing the Northwest Territory to approximately the size of present-day Ohio plus the eastern half of the Lower Peninsula of Michigan and the eastern tip of the Upper Peninsula.
Several types of maps are useful for genealogists. An 1875 map of Zanesville by Sanborn Insurance still exists today. It can be found at the Ohio Historical Society. The Newberry Library, Checklist of Printed Maps of the Middle West to 1800 is also a useful source of information on Ohio maps, although it is not complete.
For instance, it does not include a listing of the maps that can be found at the Western Reserve Historical Society. There are also partial collections of Sanborn maps available at various Ohio libraries on microfilm. Some can also be found on library websites.
Map of Ohio County Formations 1788-1888
This Interactive Map of Ohio Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of Ohio in 1788-1888.
Ohio Map Abbreviations
- unorg. = unorganized
- g. = gained
- w. = with
- fr. = from
- atmt. = attachment
- exch = exchanged
- nca.= non county area
- ch. = changed
- Ad – Adams
- Al – Allen
- Asl – Ashland
- Ast – Ashtabula
- At – Athens
- Au – Auglaize
- Be – Belmont
- Br – Brown
- Bu – Butler
- Ca – Carroll
- Ch – Champaign
- Clk – Clark
- Clt – Clinton
- Cmt – Clermont
- Col – Columbiana
- Cos – Coshocton
Old Historical Atlas Maps of Ohio
This Historical Ohio Map Collection are from original copies so you can see Georgia as our ancestors saw them over a hundred years ago.
Some Ohio map years (not all) have cities, railroads, P.O. locations, township outlines and other features useful to the Ohio researcher.
External Ohio Map Links
Ohio County Map of Road and Highway's
The Ohio D.O.T. Highway Department has prepared a series of county road maps. 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.