Ohio County Map Formation by Year
1788
1790
1792
1795
1796
1797
1798
1799
1800
1801
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1822
1824
1825
1826
1827
1828
1831
1833
1834
1835
1836
1837
1838
1839
1840
1841
1843
1845
1846
1847
1848
1849
1850
1851
1874
1883
1888
Ohio County 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