List of counties in Ohio

There are 88 counties in the U.S. state of Ohio. Nine of them existed at the time of the Ohio Constitutional Convention in 1802.[1] A tenth county, Wayne, was established on August 15, 1796, and encompassed roughly the present state of Michigan.[2] During the Convention, the county was opposed to statehood, and was not only left out of the Convention, but dissolved; the current Wayne County is in northeastern Ohio, considerably distant from the area that was the original Wayne County.[1]

Counties of Ohio

The Ohio Constitution allows counties to set up a charter government as many cities and villages do,[3] but only Summit and Cuyahoga counties have done so,[4] the latter having been approved by voters in November 2009.[5] Counties do not possess home rule powers and can do only what has been expressly authorized by the Ohio General Assembly. The elected county officials in Ohio county governments include three commissioners, a sheriff (the highest law enforcement officer in the county); prosecutor (equivalent of a district attorney in other states); coroner, engineer, Recorder, auditor, treasurer, and clerk of courts.[6][7]

Population figures are based on the 2023 vintage Census population estimates. The population of Ohio was 11,785,935 at that time, a decrease of 0.1% from 2020. The average population of Ohio's counties was 133,931; Franklin County was the most populous (1,326,063) and Vinton County was the least (12,474). The average land area is 464 sq mi (1,200 km2). The largest county by area is Ashtabula County at 702.44 sq mi (1,819.3 km2), and its neighbor, Lake County, is the smallest at 228.21 sq mi (591.1 km2). The total area of the state is 40,860.69 sq mi (105,828.7 km2).[8][9]

List of counties

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County
FIPS code[10]County Seat[11]Est.[12]Origin[13]Etymology[12][13]Population
(2023)[10][11][14]
Area[11]Map
Adams County001West UnionJul 10, 1797Hamilton CountyJohn Adams (1735–1826), President of the United States when the county was organized27,521583.91 sq mi
(1,512 km2)
Allen County003LimaMar 1, 1820Shelby CountyJohn Allen (1771/2-1813), a War of 1812 colonel[15]100,838404.43 sq mi
(1,047 km2)
Ashland County005AshlandFeb 24, 1846Wayne, Richland, Huron, and Lorain CountiesAshland, home of U.S. Senator from Kentucky Henry Clay52,190424.37 sq mi
(1,099 km2)
Ashtabula County007JeffersonJun 7, 1807Trumbull and Geauga CountiesAshtabula River, which means "fish river" in an Algonquian language[16]96,845702.44 sq mi
(1,819 km2)
Athens County009AthensMar 1, 1805Washington CountyAthens in Greece62,706506.76 sq mi
(1,313 km2)
Auglaize County011WapakonetaFeb 14, 1848Allen, Mercer, Darke, Hardin, Logan, Shelby, and Van Wert CountiesAuglaize River, which means "fallen timbers river" in the Shawnee Indian language46,050401.25 sq mi
(1,039 km2)
Belmont County013St. ClairsvilleSep 7, 1801Jefferson and Washington CountiesFrench for "beautiful mountain"64,918537.35 sq mi
(1,392 km2)
Brown County015GeorgetownMar 1, 1818Adams and Clermont CountiesGeneral Jacob Brown (1775–1828), an officer of the War of 181243,777491.76 sq mi
(1,274 km2)
Butler County017HamiltonMay 1, 1803Hamilton CountyGeneral Richard Butler (1743–1791), killed at the Battle of the Wabash393,043467.27 sq mi
(1,210 km2)
Carroll County019CarrolltonJan 1, 1833Columbiana, Stark, Harrison, Jefferson, and Tuscarawas CountiesCharles Carroll (1737–1832), last surviving signer of the United States Declaration of Independence26,758394.67 sq mi
(1,022 km2)
Champaign County021UrbanaMar 1, 1805Greene and Franklin CountiesFrench for "a plain", describing the land in the area38,845428.56 sq mi
(1,110 km2)
Clark County023SpringfieldMar 1, 1818Champaign, Madison, and Greene CountiesGeneral George Rogers Clark (1752–1818), defeated the Shawnee Indians in a battle near the Springfield area134,610399.86 sq mi
(1,036 km2)
Clermont County025BataviaDec 6, 1800Hamilton CountyFrench for "clear mountain"211,972451.99 sq mi
(1,171 km2)
Clinton County027WilmingtonMar 1, 1810Highland and Warren CountiesGeorge Clinton (1739–1812), vice-president when the county was organized41,938410.88 sq mi
(1,064 km2)
Columbiana County029LisbonMay 1, 1803Jefferson and Washington CountiesChristopher Columbus, European explorer of the Americas100,182532.46 sq mi
(1,379 km2)
Coshocton County031CoshoctonJan 31, 1810Muskingum and Tuscarawas CountiesDelaware Indian word meaning "union of waters"36,869564.07 sq mi
(1,461 km2)
Crawford County033BucyrusApr 1, 1820Delaware CountyColonel William Crawford (1732–1782), Revolutionary War officer41,529402.11 sq mi
(1,041 km2)
Cuyahoga County035ClevelandJun 7, 1807Geauga CountyCuyahoga River, which means "crooked river" in an Iroquoian language[17]1,233,088458.49 sq mi
(1,187 km2)
Darke County037GreenvilleJan 3, 1809Miami CountyGeneral William Darke (1736–1801), Revolutionary War officer51,415599.80 sq mi
(1,553 km2)
Defiance County039DefianceApr 7, 1845Williams, Henry, and Paulding CountiesFort Defiance, built in 1794 by General Anthony Wayne38,315411.16 sq mi
(1,065 km2)
Delaware County041DelawareApr 1, 1808Franklin CountyDelaware Indians231,636442.41 sq mi
(1,146 km2)
Erie County043SanduskyMar 15, 1838Huron and Sandusky CountiesErie Indians74,035254.88 sq mi
(660 km2)
Fairfield County045LancasterDec 9, 1800Ross and Washington CountiesNamed for the beauty of its "fair fields"165,360505.11 sq mi
(1,308 km2)
Fayette County047Washington Court HouseMar 1, 1810Ross and Highland CountiesGilbert du Motier, marquis de La Fayette, French military officer and aristocrat who participated in both the American and French revolutions28,817406.58 sq mi
(1,053 km2)
Franklin County049ColumbusApr 30, 1803Ross and Wayne CountiesBenjamin Franklin (1706–1791), Founding Father, author, printer, political theorist, scientist, inventor, and statesman1,326,063539.87 sq mi
(1,398 km2)
Fulton County051WauseonApr 1, 1850Lucas, Henry, and Williams CountiesRobert Fulton (1765–1815), inventor of the steamboat[18]42,007406.78 sq mi
(1,054 km2)
Gallia County053GallipolisApr 30, 1803Washington and Adams CountiesGaul, the ancient name of France28,986468.78 sq mi
(1,214 km2)
Geauga County055ChardonMar 1, 1806Trumbull CountyAn Indian word meaning "raccoon"95,407403.66 sq mi
(1,045 km2)
Greene County057XeniaMay 1, 1803Hamilton and Ross CountiesGeneral Nathanael Greene (1742–1786), Revolutionary War officer169,691414.88 sq mi
(1,075 km2)
Guernsey County059CambridgeMar 1, 1810Belmont and Muskingum CountiesIsland of Guernsey, from where most of the settlers originated38,089521.90 sq mi
(1,352 km2)
Hamilton County061CincinnatiJan 2, 1790One of the original countiesAlexander Hamilton (1755/7-1804), Secretary of the Treasury when the county was organized827,058407.36 sq mi
(1,055 km2)
Hancock County063FindlayApr 1, 1820Logan CountyJohn Hancock (1737–1793), president of the Continental Congress74,704531.35 sq mi
(1,376 km2)
Hardin County065KentonApr 1, 1820Logan CountyGeneral John Hardin (1753–1792), Revolutionary War officer30,368470.29 sq mi
(1,218 km2)
Harrison County067CadizFeb 1, 1813Jefferson and Tuscarawas CountiesGeneral William Henry Harrison (1773–1841), an officer of the War of 1812 and future President of the United States14,159403.53 sq mi
(1,045 km2)
Henry County069NapoleonApr 1, 1820Shelby CountyPatrick Henry (1736–1799), Revolutionary War-era legislator, orator, and scholar27,520416.50 sq mi
(1,079 km2)
Highland County071HillsboroMay 1, 1805Ross, Adams, and Clermont CountiesDescriptive of the county's terrain43,614553.28 sq mi
(1,433 km2)
Hocking County073LoganMar 1, 1818Athens, Ross, and Fairfield CountiesPossibly derived from the Delaware Indian word "Hoch-Hoch-ing", meaning "bottle"27,540422.75 sq mi
(1,095 km2)
Holmes County075MillersburgJan 20, 1824Coshocton, Wayne, and Tuscarawas CountiesMajor Andrew Holmes (died 1814), a War of 1812 officer44,386422.99 sq mi
(1,096 km2)
Huron County077NorwalkMar 7, 1809Portage and Cuyahoga CountiesHuron Indians58,199492.69 sq mi
(1,276 km2)
Jackson County079JacksonMar 1, 1816Scioto, Gallia, Athens, and Ross CountiesGeneral Andrew Jackson (1767–1845), future President of the United States32,606420.28 sq mi
(1,089 km2)
Jefferson County081SteubenvilleJul 29, 1797Washington CountyThomas Jefferson (1743–1826), Vice President when the county was organized, future President of the United States, and principal author of the Declaration of Independence64,026409.61 sq mi
(1,061 km2)
Knox County083Mount VernonMar 1, 1808Fairfield CountyGeneral Henry Knox, the first Secretary of War63,320527.12 sq mi
(1,365 km2)
Lake County085PainesvilleMar 6, 1840Geauga and Cuyahoga CountiesIts location on Lake Erie231,640228.21 sq mi
(591 km2)
Lawrence County087IrontonDec 21, 1815Gallia and Scioto CountiesCaptain James Lawrence (1781–1813), naval hero in the War of 181256,118454.96 sq mi
(1,178 km2)
Licking County089NewarkMar 1, 1808Fairfield CountyLicking River, named for the salt licks in the area, or an English pronunciation of the Lenape word W'li/'ik'/nk meaning "where the flood waters recede"[19]183,201686.50 sq mi
(1,778 km2)
Logan County091BellefontaineMar 1, 1818Champaign CountyGeneral Benjamin Logan (c. 1742 – 1802), who destroyed Shawnee Indian towns in the county46,057458.44 sq mi
(1,187 km2)
Lorain County093ElyriaDec 26, 1822Huron, Cuyahoga, and Medina CountiesProvince of Lorraine, France317,910492.50 sq mi
(1,276 km2)
Lucas County095ToledoJun 20, 1835Wood, Sandusky, and Huron CountiesRobert Lucas (1781–1853), Governor of Ohio when the county was created425,484340.46 sq mi
(882 km2)
Madison County097LondonMar 1, 1810Franklin CountyJames Madison (1751–1836), fourth President of the United States44,602465.44 sq mi
(1,205 km2)
Mahoning County099YoungstownMar 1, 1846Columbiana and Trumbull CountiesMahoning River, from a Lenape word meaning "at the licks"225,596415.25 sq mi
(1,075 km2)
Marion County101MarionApr 1, 1820Delaware CountyGeneral Francis Marion (1732–1795), lieutenant colonel in the Continental Army and later brigadier general in the American Revolutionary War64,851403.84 sq mi
(1,046 km2)
Medina County103MedinaFeb 18, 1812Portage CountyMedina, world-renowned religious site in western Saudi Arabia184,042423 sq mi
(1,096 km2)
Meigs County105PomeroyApr 1, 1819Gallia and Athens CountiesReturn Jonathan Meigs Jr. (1764–1825), Governor of Ohio and Postmaster General at the time the county was organized21,767429.42 sq mi
(1,112 km2)
Mercer County107CelinaApr 1, 1820Darke CountyGeneral Hugh Mercer (1726–1777), a Revolutionary War officer42,439463.27 sq mi
(1,200 km2)
Miami County109TroyMar 1, 1807Montgomery CountyMiami Indians110,876407.04 sq mi
(1,054 km2)
Monroe County111WoodsfieldJan 29, 1813Belmont, Washington, and Guernsey CountiesJames Monroe (1758–1831), Secretary of State when the county was organized and future President of the United States13,153455.54 sq mi
(1,180 km2)
Montgomery County113DaytonMay 1, 1803Hamilton and Wayne CountiesGeneral Richard Montgomery (1738–1775), a Revolutionary War officer533,796461.68 sq mi
(1,196 km2)
Morgan County115McConnelsvilleDec 29, 1817Washington, Guernsey, and Muskingum CountiesGeneral Daniel Morgan (c. 1735 – 1802), a Revolutionary War officer13,646417.66 sq mi
(1,082 km2)
Morrow County117Mount GileadMar 1, 1848Knox, Marion, Delaware, and Richland CountiesJeremiah Morrow (1771–1852), Governor of Ohio35,595406.22 sq mi
(1,052 km2)
Muskingum County119ZanesvilleMarch 1, 1804[20][21]Washington and Fairfield CountiesAn Indian word meaning "A town by the river" or "by the river side"86,305664.63 sq mi
(1,721 km2)
Noble County121CaldwellApr 1, 1851Monroe, Washington, Morgan, and Guernsey CountiesJames Noble, an early settler in the area14,311399.00 sq mi
(1,033 km2)
Ottawa County123Port ClintonMar 6, 1840Erie, Sandusky, and Lucas CountiesNamed for the Ottawa Indians; Ottawa means "trader" in their language39,803254.95 sq mi
(660 km2)
Paulding County125PauldingApr 1, 1820Darke CountyJohn Paulding (1758–1818), captor of spy John André during the Revolutionary War18,706416.26 sq mi
(1,078 km2)
Perry County127New LexingtonMar 1, 1818Washington, Fairfield, and Muskingum CountiesCommodore Oliver Hazard Perry (1785–1819), a naval officer of the War of 181235,551409.78 sq mi
(1,061 km2)
Pickaway County129CirclevilleMar 1, 1810Ross, Fairfield, and Franklin CountiesA misspelling of the Piqua tribe, a branch of the Shawnee61,086501.91 sq mi
(1,300 km2)
Pike County131WaverlyFeb 1, 1815Ross, Scioto, and Adams CountiesGeneral Zebulon M. Pike (1779–1813), a War of 1812 officer and discoverer of Pikes Peak in Colorado in 180627,001441.49 sq mi
(1,143 km2)
Portage County133RavennaJun 7, 1807Trumbull CountyDerived from an Indian portage162,665492.39 sq mi
(1,275 km2)
Preble County135EatonMar 1, 1808Montgomery and Butler CountiesCaptain Edward Preble (1761–1807), a Naval commander in the Revolutionary War40,556424.80 sq mi
(1,100 km2)
Putnam County137OttawaApr 1, 1820Shelby CountyGeneral Israel Putnam (1718–1790), a Revolutionary War officer34,199483.87 sq mi
(1,253 km2)
Richland County139MansfieldMar 1, 1808Fairfield CountyDescriptive of the soil in the area125,064496.88 sq mi
(1,287 km2)
Ross County141ChillicotheAug 20, 1798Adams and Washington CountiesNamed for U.S. Senator from Pennsylvania James Ross by territorial governor Arthur St. Clair76,501688.41 sq mi
(1,783 km2)
Sandusky County143FremontApr 1, 1820Huron CountyAn Iroquois word meaning "cold water"58,709409.18 sq mi
(1,060 km2)
Scioto County145PortsmouthMay 1, 1803Adams CountyScioto River; Scioto is a Wyandot Indian word meaning "deer"71,969612.27 sq mi
(1,586 km2)
Seneca County147TiffinApr 1, 1820Huron CountySeneca Indians, who had a reservation in the county area at the time54,527550.59 sq mi
(1,426 km2)
Shelby County149SidneyApr 1, 1819Miami CountyGeneral Isaac Shelby (1750–1826), a Revolutionary War officer and Governor of Kentucky47,765409.27 sq mi
(1,060 km2)
Stark County151CantonFeb 13, 1808Columbiana CountyGeneral John Stark (1728–1822), a Revolutionary War officer; known as the "Hero of Bennington" for his exemplary service at the Battle of Bennington in 1777372,716576.14 sq mi
(1,492 km2)
Summit County153AkronMar 3, 1840Medina, Portage, and Stark CountiesIts location at the highest elevation along the Ohio and Erie Canal535,733419.38 sq mi
(1,086 km2)
Trumbull County155WarrenJul 10, 1800Jefferson and Wayne CountiesJonathan Trumbull (1710–1785), Governor of Connecticut when the county was organized200,373616.48 sq mi
(1,597 km2)
Tuscarawas County157New PhiladelphiaMar 15, 1808Muskingum CountyTuscarawas River, meaning "open mouth river"
or
the Tuscarawas tribe who lived on the river
91,874567.58 sq mi
(1,470 km2)
Union County159MarysvilleApr 1, 1820Delaware, Franklin, Logan, and Madison CountiesIts formation by a union of four counties69,637436.65 sq mi
(1,131 km2)
Van Wert County161Van WertApr 1, 1820Darke CountyIsaac Van Wart (1760–1828), captor of spy John André during the Revolutionary War28,704410.09 sq mi
(1,062 km2)
Vinton County163McArthurMar 23, 1850Athens, Gallia, Hocking, Jackson, and Ross CountiesSamuel Finley Vinton (1792–1862), Ohio Statesman and U.S. Congressman12,474414.08 sq mi
(1,072 km2)
Warren County165LebanonMay 1, 1803Hamilton CountyGeneral Joseph Warren (1741–1775), a Revolutionary War officer252,148399.63 sq mi
(1,035 km2)
Washington County167MariettaJul 27, 1788One of the original countiesGeorge Washington (1732–1799), commander of the Continental Army, president of the Constitutional Convention, and future President of the United States58,577635.15 sq mi
(1,645 km2)
Wayne County169WoosterMar 1, 1812Stark CountyGeneral Anthony Wayne (1745–1796), a Revolutionary War officer116,510555.36 sq mi
(1,438 km2)
Williams County171BryanApr 1, 1820Darke CountyDavid Williams (1754–1831), captor of spy John André during the Revolutionary War36,591421.74 sq mi
(1,092 km2)
Wood County173Bowling GreenApr 1, 1820Refactored from non-county territoryEleazer D. Wood (1783–1814), founder of Fort Meigs132,650617.32 sq mi
(1,599 km2)
Wyandot County175Upper SanduskyFeb 3, 1845Marion, Crawford, and Hardin CountiesWyandot Indians21,457405.61 sq mi
(1,051 km2)

List of county codes

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The Federal Information Processing Standard (FIPS) is used by the U.S. government to uniquely identify counties. In the following table, these codes link to the United States Census Bureau's "quick facts" for each county. Ohio's FIPS code of 39 is used to distinguish from counties in other states. For example, Adams County's unique nationwide identifier is 39001.[10]

Various state agencies identify counties by different coding schemes. The Ohio Department of Taxation assigns consecutive numbers for the purpose of enumerating taxing districts.[22] The Ohio Department of Public Safety, including the Ohio Bureau of Motor Vehicles, associates these county numbers with vehicle registrations.[23] The Department of Transportation uses three-letter abbreviations in road inventory and traffic management applications.[24] For historic preservation purposes, Ohio History Connection refers to counties by two- and three-letter abbreviations in the Ohio Archaeological Inventory and Ohio Historic Inventory, respectively.[25]

CountyFIPS codeODPS[23]/ODT[22] codeOAI[25] codeODOT[24]/OHI[25] code
Adams County00101ADADA
Allen County00302ALALL
Ashland County00503ASASD
Ashtabula County00704ABATB
Athens County00905ATATH
Auglaize County01106AUAUG
Belmont County01307BLBEL
Brown County01508BRBRO
Butler County01709BUBUT
Carroll County01910CACAR
Champaign County02111CHCHP
Clark County02312CLCLA
Clermont County02513CTCLE
Clinton County02714CNCLI
Columbiana County02915COCOL
Coshocton County03116CSCOS
Crawford County03317CRCRA
Cuyahoga County03518CUCUY
Darke County03719DADAR
Defiance County03920DEDEF
Delaware County04121DLDEL
Erie County04322ERERI
Fairfield County04523FAFAI
Fayette County04724FEFAY
Franklin County04925FRFRA
Fulton County05126FUFUL
Gallia County05327GAGAL
Geauga County05528GEGEA
Greene County05729GRGRE
Guernsey County05930GUGUE
Hamilton County06131HAHAM
Hancock County06332HKHAN
Hardin County06533HRHAR
Harrison County06734HNHAS
Henry County06935HYHEN
Highland County07136HIHIG
Hocking County07337HOHOC
Holmes County07538HSHOL
Huron County07739HUHUR
Jackson County07940JAJAC
Jefferson County08141JEJEF
Knox County08342KNKNO
Lake County08543LALAK
Lawrence County08744LELAW
Licking County08945LILIC
Logan County09146LOLOG
Lorain County09347LNLOR
Lucas County09548LULUC
Madison County09749MAMAD
Mahoning County09950MHMAH
Marion County10151MNMAR
Medina County10352MEMED
Meigs County10553MSMEG
Mercer County10754MRMER
Miami County10955MIMIA
Monroe County11156MOMOE
Montgomery County11357MYMOT
Morgan County11558MGMRG
Morrow County11759MWMRW
Muskingum County11960MUMUS
Noble County12161NONOB
Ottawa County12362OTOTT
Paulding County12563PAPAU
Perry County12764PEPER
Pickaway County12965PIPIC
Pike County13166PKPIK
Portage County13367POPOR
Preble County13568PRPRE
Putnam County13769PUPUT
Richland County13970RIRIC
Ross County14171ROROS
Sandusky County14372SASAN
Scioto County14573SCSCI
Seneca County14774SESEN
Shelby County14975SHSHE
Stark County15176STSTA
Summit County15377SUSUM
Trumbull County15578TRTRU
Tuscarawas County15779TUTUS
Union County15980UNUNI
Van Wert County16181VWVAN
Vinton County16382VIVIN
Warren County16583WAWAR
Washington County16784WNWAS
Wayne County16985WEWAY
Williams County17186WIWIL
Wood County17387WOWOO
Wyandot County17588WYWYA

See also

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References

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Further reading

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