Ohio Map & Atlas Guide

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Any Historical Ohio 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.

Solving Research Problems with a Ohio Maps – If you have started your family research, you might have experienced trouble with trying to identify Ohio 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 Ohio historic maps were usually commissioned by the county seat, they often display information about the county, including town names. Reading a Ohio 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 Ohio.

Ohio Map of Counties

Ohio Map of Counties

Choosing the Best Ohio 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.

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.

Ohio Map of County Formations For The Years 1788-1888

These Ohio maps shows the historical changes to Ohio counties from 1788 to 1888.

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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
Cr  - Crawford
Cu  - Cuyahoga
Da  - Darke
Def - Defiance
Del - Delaware
Er  - Erie
Fai - Fairfield
Fay - Fayette
Fr  - Franklin
Fu  - Fulton
Ga  - Gallia
Ge  - Geauga
Gr  - Greene
Gu  - Guernsey
Ham - Hamilton
Han - Hancock
Hdn - Hardin
He  - Henry
Hi  - Highland
Hoc - Hocking
Hol - Holmes
Hsn - Harrison
Hu  - Huron
Ja  - Jackson
Je  - Jefferson
Kn  - Knox
Lak - Lake
Law - Lawrence
Li  - Licking
Log - Logan
Lor - Lorain
Lu  - Lucas
Mad - Madison
Mah - Mahoning
Mar - Marion
Med - Medina
Mei - Meigs
Mer - Mercer
Mgn - Morgan
Mi  - Miami
Mro - Monroe
Mrw - Morrow
Mty - Montgomery
Mu  - Muskingum
No  - Noble
Ot  - Ottawa
Pa  - Paulding
Pe  - Perry
Pic - Pickaway
Pik - Pike
Po  - Portage
Pr  - Preble
Pu  - Putnam
Ri  - richland
Ro  - ross
Sa  - Sandusky
Sc  - Scioto
Se  - Seneca
Sh  - Shelby
St  - Stark
Su  - Summit
Tr  - Trumbull
Tu  - Tuscarawas
Un  - Union
Vi  - Vinton
VW  - Van Wert
War - Warren
Was - Washington
Way - Wayne
Wi  - Williams
Wo  - Wood
Wy  - Wyandot

Ohio Maps & Atlases

1836 Ohio MapThe David Rumsey Historical Ohio Map Collection is scanned from original copies so you can see Ohio 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 Links for Ohio Maps

U.S. State Map Guides