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, auditor, treasurer, and clerk of courts.[6][7]

Population figures are based on the 2021 vintage Census population estimates. The population of Ohio was 11,780,017 at that time, a decrease of 0.2% from 2020. The average population of Ohio's counties was 133,864; Franklin County was the most populous (1,321,414) and Vinton County was the least (12,696). 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]

The Federal Information Processing Standard (FIPS) is used by the U.S. government to uniquely identify counties, and is provided for each entry. 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] However, the Bureau of Motor Vehicles and Department of Transportation instead identify counties by consecutive numbers and three-letter abbreviations,[11] respectively. 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.[12]

List of counties
County
 FIPS code[10] County Seat[13] Est.[14] Origin[15] Etymology[14][15] Population[10][13] [16] Area[13] Map
Adams County 001 West UnionJul 10, 1797Hamilton CountyJohn Adams (1735–1826), President of the United States when the county was organized 27,542 583.91 sq mi
(1,512 km2)
Allen County 003 LimaMar 1, 1820Shelby CountyJohn Allen (1771/2-1813), a War of 1812 colonel[17] 101,670 404.43 sq mi
(1,047 km2)
Ashland County 005 AshlandFeb 24, 1846Wayne, Richland, Huron, and Lorain CountiesAshland, home of U.S. Senator from Kentucky Henry Clay 52,316 424.37 sq mi
(1,099 km2)
Ashtabula County 007 JeffersonJun 7, 1807Trumbull and Geauga CountiesAshtabula River, which means "fish river" in an Algonquian language[18] 97,337 702.44 sq mi
(1,819 km2)
Athens County 009 AthensMar 1, 1805Washington CountyAthens in Greece 62,056 506.76 sq mi
(1,313 km2)
Auglaize County 011 WapakonetaFeb 14, 1848Allen, Mercer, Darke, Hardin, Logan, Shelby, and Van Wert CountiesAuglaize River, which means "fallen timbers river" in the Shawnee Indian language 46,141 401.25 sq mi
(1,039 km2)
Belmont County 013 St. ClairsvilleSep 7, 1801Jefferson and Washington CountiesBelle monte, which means "beautiful mountain" in French 65,849 537.35 sq mi
(1,392 km2)
Brown County 015 GeorgetownMar 1, 1818Adams and Clermont CountiesGeneral Jacob Brown (1775–1828), an officer of the War of 1812 43,662 491.76 sq mi
(1,274 km2)
Butler County 017 HamiltonMay 1, 1803Hamilton CountyGeneral Richard Butler (1743–1791), killed at the Battle of the Wabash 390,234 467.27 sq mi
(1,210 km2)
Carroll County 019 CarrolltonJan 1, 1833Columbiana, Stark, Harrison, Jefferson, and Tuscarawas CountiesCharles Carroll (1737–1832), last surviving signer of the United States Declaration of Independence 26,691 394.67 sq mi
(1,022 km2)
Champaign County 021 UrbanaMar 1, 1805Greene and Franklin CountiesFrench for "a plain", describing the land in the area 38,699 428.56 sq mi
(1,110 km2)
Clark County 023 SpringfieldMar 1, 1818Champaign, Madison, and Greene CountiesGeneral George Rogers Clark (1752–1818), defeated the Shawnee Indians in a battle near the Springfield area 135,633 399.86 sq mi
(1,036 km2)
Clermont County 025 BataviaDec 6, 1800Hamilton CountyFrench for "clear mountain" 209,642 451.99 sq mi
(1,171 km2)
Clinton County 027 WilmingtonMar 1, 1810Highland and Warren CountiesGeorge Clinton (1739–1812), vice-president when the county was organized 42,004 410.88 sq mi
(1,064 km2)
Columbiana County 029 LisbonMay 1, 1803Jefferson and Washington CountiesChristopher Columbus, European explorer of the Americas 101,310 532.46 sq mi
(1,379 km2)
Coshocton County 031 CoshoctonJan 31, 1810Muskingum and Tuscarawas CountiesDelaware Indian word meaning "union of waters" 36,618 564.07 sq mi
(1,461 km2)
Crawford County 033 BucyrusApr 1, 1820Delaware CountyColonel William Crawford (1732–1782), Revolutionary War officer 41,754 402.11 sq mi
(1,041 km2)
Cuyahoga County 035 ClevelandJun 7, 1807Geauga CountyCuyahoga River, which means "crooked river" in an Iroquoian language[19] 1,249,387 458.49 sq mi
(1,187 km2)
Darke County 037 GreenvilleJan 3, 1809Miami CountyGeneral William Darke (1736–1801), Revolutionary War officer 51,597 599.80 sq mi
(1,553 km2)
Defiance County 039 DefianceApr 7, 1845Williams, Henry, and Paulding CountiesFort Defiance, built in 1794 by General Anthony Wayne 38,144 411.16 sq mi
(1,065 km2)
Delaware County 041 DelawareApr 1, 1808Franklin CountyDelaware Indians 220,740 442.41 sq mi
(1,146 km2)
Erie County 043 SanduskyMar 15, 1838Huron and Sandusky CountiesErie Indians 74,852 254.88 sq mi
(660 km2)
Fairfield County 045 LancasterDec 9, 1800Ross and Washington CountiesNamed for the beauty of its "fair fields" 161,064 505.11 sq mi
(1,308 km2)
Fayette County 047 Washington 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 revolutions 28,906 406.58 sq mi
(1,053 km2)
Franklin County 049 ColumbusApr 30, 1803Ross and Wayne CountiesBenjamin Franklin (1706–1791), Founding Father, author, printer, political theorist, scientist, inventor, and statesman 1,321,414 539.87 sq mi
(1,398 km2)
Fulton County 051 WauseonApr 1, 1850Lucas, Henry, and Williams CountiesRobert Fulton (1765–1815), inventor of the steamboat[20] 42,450 406.78 sq mi
(1,054 km2)
Gallia County 053 GallipolisApr 30, 1803Washington and Adams CountiesGaul, the ancient name of France 29,158 468.78 sq mi
(1,214 km2)
Geauga County 055 ChardonMar 1, 1806Trumbull CountyAn Indian word meaning "raccoon" 95,565 403.66 sq mi
(1,045 km2)
Greene County 057 XeniaMay 1, 1803Hamilton and Ross CountiesGeneral Nathanael Greene (1742–1786), Revolutionary War officer 168,412 414.88 sq mi
(1,075 km2)
Guernsey County 059 CambridgeMar 1, 1810Belmont and Muskingum CountiesIsland of Guernsey, from where most of the settlers originated 38,287 521.90 sq mi
(1,352 km2)
Hamilton County 061 CincinnatiJan 2, 1790One of the original countiesAlexander Hamilton (1755/7-1804), Secretary of the Treasury when the county was organized 826,139 407.36 sq mi
(1,055 km2)
Hancock County 063 FindlayApr 1, 1820Logan CountyJohn Hancock (1737–1793), president of the Continental Congress 74,656 531.35 sq mi
(1,376 km2)
Hardin County 065 KentonApr 1, 1820Logan CountyGeneral John Hardin (1753–1792), Revolutionary War officer 30,621 470.29 sq mi
(1,218 km2)
Harrison County 067 CadizFeb 1, 1813Jefferson and Tuscarawas CountiesGeneral William Henry Harrison (1773–1841), an officer of the War of 1812 and future President of the United States 14,477 403.53 sq mi
(1,045 km2)
Henry County 069 NapoleonApr 1, 1820Shelby CountyPatrick Henry (1736–1799), Revolutionary War-era legislator, orator, and scholar 27,538 416.50 sq mi
(1,079 km2)
Highland County 071 HillsboroMay 1, 1805Ross, Adams, and Clermont CountiesDescriptive of the county's terrain 43,354 553.28 sq mi
(1,433 km2)
Hocking County 073 LoganMar 1, 1818Athens, Ross, and Fairfield CountiesPossibly derived from the Delaware Indian word "Hoch-Hoch-ing", meaning "bottle" 28,097 422.75 sq mi
(1,095 km2)
Holmes County 075 MillersburgJan 20, 1824Coshocton, Wayne, and Tuscarawas CountiesMajor Andrew Holmes (died 1814), a War of 1812 officer 44,271 422.99 sq mi
(1,096 km2)
Huron County 077 NorwalkMar 7, 1809Portage and Cuyahoga CountiesHuron Indians 58,367 492.69 sq mi
(1,276 km2)
Jackson County 079 JacksonMar 1, 1816Scioto, Gallia, Athens, and Ross CountiesGeneral Andrew Jackson (1767–1845), future President of the United States 32,511 420.28 sq mi
(1,089 km2)
Jefferson County 081 SteubenvilleJul 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 Independence 64,789 409.61 sq mi
(1,061 km2)
Knox County 083 Mount VernonMar 1, 1808Fairfield CountyGeneral Henry Knox, the first Secretary of War 62,897 527.12 sq mi
(1,365 km2)
Lake County 085 PainesvilleMar 6, 1840Geauga and Cuyahoga CountiesIts location on Lake Erie 232,023 228.21 sq mi
(591 km2)
Lawrence County 087 IrontonDec 21, 1815Gallia and Scioto CountiesCaptain James Lawrence (1781–1813), naval hero in the War of 1812 57,445 454.96 sq mi
(1,178 km2)
Licking County 089 NewarkMar 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"[21] 180,401 686.50 sq mi
(1,778 km2)
Logan County 091 BellefontaineMar 1, 1818Champaign CountyGeneral Benjamin Logan (c. 1742 – 1802), who destroyed Shawnee Indian towns in the county 46,035 458.44 sq mi
(1,187 km2)
Lorain County 093 ElyriaDec 26, 1822Huron, Cuyahoga, and Medina CountiesProvince of Lorraine, France 315,595 492.50 sq mi
(1,276 km2)
Lucas County 095 ToledoJun 20, 1835Wood, Sandusky, and Huron CountiesRobert Lucas (1781–1853), Governor of Ohio when the county was created 429,191 340.46 sq mi
(882 km2)
Madison County 097 LondonMar 1, 1810Franklin CountyJames Madison (1751–1836), fourth President of the United States 44,386 465.44 sq mi
(1,205 km2)
Mahoning County 099 YoungstownMar 1, 1846Columbiana and Trumbull CountiesMahoning River, from a Lenape word meaning "at the licks" 226,762 415.25 sq mi
(1,075 km2)
Marion County 101 MarionApr 1, 1820Delaware CountyGeneral Francis Marion (1732–1795), lieutenant colonel in the Continental Army and later brigadier general in the American Revolutionary War 65,291 403.84 sq mi
(1,046 km2)
Medina County 103 MedinaFeb 18, 1812Portage CountyMedina, world-renowned religious site in western Saudi Arabia 183,092 423 sq mi
(1,096 km2)
Meigs County 105 PomeroyApr 1, 1819Gallia and Athens CountiesReturn Jonathan Meigs, Jr. (1764–1825), Governor of Ohio and Postmaster General at the time the county was organized 22,049 429.42 sq mi
(1,112 km2)
Mercer County 107 CelinaApr 1, 1820Darke CountyGeneral Hugh Mercer (1726–1777), a Revolutionary War officer 42,309 463.27 sq mi
(1,200 km2)
Miami County 109 TroyMar 1, 1807Montgomery CountyMiami Indians 109,264 407.04 sq mi
(1,054 km2)
Monroe County 111 WoodsfieldJan 29, 1813Belmont, Washington, and Guernsey CountiesJames Monroe (1758–1831), Secretary of State when the county was organized and future President of the United States 13,329 455.54 sq mi
(1,180 km2)
Montgomery County 113 DaytonMay 1, 1803Hamilton and Wayne CountiesGeneral Richard Montgomery (1738–1775), a Revolutionary War officer 535,840 461.68 sq mi
(1,196 km2)
Morgan County 115 McConnelsvilleDec 29, 1817Washington, Guernsey, and Muskingum CountiesGeneral Daniel Morgan (c. 1735 – 1802), a Revolutionary War officer 13,682 417.66 sq mi
(1,082 km2)
Morrow County 117 Mount GileadMar 1, 1848Knox, Marion, Delaware, and Richland CountiesJeremiah Morrow (1771–1852), Governor of Ohio 35,151 406.22 sq mi
(1,052 km2)
Muskingum County 119 ZanesvilleMar 1, 1804[22][23]Washington and Fairfield CountiesAn Indian word meaning "A town by the river" or "by the river side" 86,408 664.63 sq mi
(1,721 km2)
Noble County 121 CaldwellApr 1, 1851Monroe, Washington, Morgan, and Guernsey CountiesWarren P. Noble, an early settler in the area[24] 14,176 399.00 sq mi
(1,033 km2)
Ottawa County 123 Port ClintonMar 6, 1840Erie, Sandusky, and Lucas CountiesNamed for the Ottawa Indians; Ottawa means "trader" in their language 40,104 254.95 sq mi
(660 km2)
Paulding County 125 PauldingApr 1, 1820Darke CountyJohn Paulding (1758–1818), captor of spy John André during the Revolutionary War 18,871 416.26 sq mi
(1,078 km2)
Perry County 127 New LexingtonMar 1, 1818Washington, Fairfield, and Muskingum CountiesCommodore Oliver Hazard Perry (1785–1819), a naval officer of the War of 1812 35,460 409.78 sq mi
(1,061 km2)
Pickaway County 129 CirclevilleMar 1, 1810Ross, Fairfield, and Franklin CountiesA misspelling of the Piqua tribe, a branch of the Shawnee 59,333 501.91 sq mi
(1,300 km2)
Pike County 131 WaverlyFeb 1, 1815Ross, Scioto, and Adams CountiesGeneral Zebulon M. Pike (1779–1813), a War of 1812 officer and discoverer of Pikes Peak in Colorado in 1806 27,089 441.49 sq mi
(1,143 km2)
Portage County 133 RavennaJun 7, 1807Trumbull CountyDerived from an Indian portage 162,382 492.39 sq mi
(1,275 km2)
Preble County 135 EatonMar 1, 1808Montgomery and Butler CountiesCaptain Edward Preble (1761–1807), a Naval commander in the Revolutionary War 40,867 424.80 sq mi
(1,100 km2)
Putnam County 137 OttawaApr 1, 1820Shelby CountyGeneral Israel Putnam (1718–1790), a Revolutionary War officer 34,318 483.87 sq mi
(1,253 km2)
Richland County 139 MansfieldMar 1, 1808Fairfield CountyDescriptive of the soil in the area 125,195 496.88 sq mi
(1,287 km2)
Ross County 141 ChillicotheAug 20, 1798Adams and Washington CountiesNamed for U.S. Senator from Pennsylvania James Ross by territorial governor Arthur St. Clair 76,891 688.41 sq mi
(1,783 km2)
Sandusky County 143 FremontApr 1, 1820Huron CountyAn Iroquois word meaning "cold water" 58,715 409.18 sq mi
(1,060 km2)
Scioto County 145 PortsmouthMay 1, 1803Adams CountyScioto River; Scioto is a Wyandot Indian word meaning "deer" 73,346 612.27 sq mi
(1,586 km2)
Seneca County 147 TiffinApr 1, 1820Huron CountySeneca Indians, who had a reservation in the county area at the time 54,906 550.59 sq mi
(1,426 km2)
Shelby County 149 SidneyApr 1, 1819Miami CountyGeneral Isaac Shelby (1750–1826), a Revolutionary War officer and Governor of Kentucky 47,977 409.27 sq mi
(1,060 km2)
Stark County 151 CantonFeb 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 1777 373,834 576.14 sq mi
(1,492 km2)
Summit County 153 AkronMar 3, 1840Medina, Portage, and Stark CountiesIts location at the highest elevation along the Ohio and Erie Canal 537,633 419.38 sq mi
(1,086 km2)
Trumbull County 155 WarrenJul 10, 1800Jefferson and Wayne CountiesJonathan Trumbull (1710–1785), Governor of Connecticut when the county was organized 201,335 616.48 sq mi
(1,597 km2)
Tuscarawas County 157 New PhiladelphiaMar 15, 1808Muskingum CountyTuscarawas River, meaning "open mouth river"
or
the Tuscarawas tribe who lived on the river		 92,500 567.58 sq mi
(1,470 km2)
Union County 159 MarysvilleApr 1, 1820Delaware, Franklin, Logan, and Madison CountiesIts formation by a union of four counties 64,971 436.65 sq mi
(1,131 km2)
Van Wert County 161 Van WertApr 1, 1820Darke CountyIsaac Van Wart (1760–1828), captor of spy John André during the Revolutionary War 28,732 410.09 sq mi
(1,062 km2)
Vinton County 163 McArthurMar 23, 1850Athens, Gallia, Hocking, Jackson, and Ross CountiesSamuel Finley Vinton (1792–1862), Ohio Statesman and U.S. Congressman 12,696 414.08 sq mi
(1,072 km2)
Warren County 165 LebanonMay 1, 1803Hamilton CountyGeneral Joseph Warren (1741–1775), a Revolutionary War officer 246,553 399.63 sq mi
(1,035 km2)
Washington County 167 MariettaJul 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 States 59,423 635.15 sq mi
(1,645 km2)
Wayne County 169 WoosterMar 1, 1808From non-county areaGeneral Anthony Wayne (1745–1796), a Revolutionary War officer 116,710 555.36 sq mi
(1,438 km2)
Williams County 171 BryanApr 1, 1820Darke CountyDavid Williams (1754–1831), captor of spy John André during the Revolutionary War 36,716 421.74 sq mi
(1,092 km2)
Wood County 173 Bowling GreenApr 1, 1820Refactored from non-county territoryEleazer D. Wood (1783–1814), founder of Fort Meigs 132,472 617.32 sq mi
(1,599 km2)
Wyandot County 175 Upper SanduskyFeb 3, 1845Marion, Crawford, and Hardin CountiesWyandot Indians 21,708 405.61 sq mi
(1,051 km2)

See also

References
  1. Laning, J.F. (1896). "The Evolution of Ohio Counties". Ohio Archaeological and Historical Publications. V: 326–350. Archived from the original on 2015-11-21.. Other editions available at ISBN 1249686741 and Google Books
  2. Lawyer, James Patterson (1905). History of Ohio: From the Glacial Period to the Present Time. Press of F. J. Heer. p. 381. Retrieved 2007-08-18.. Other editions available at ISBN 9781279183281
  3. Steinglass, Steven; Scarselli, Gino (2004). The Ohio State Constitution A Reference Guide. Westport, CT: Praeger Publishers. pp. 272–273. (OH county charter). Other editions available: ISBN 0313267650 and Google Books
  4. "County of Summit". Retrieved 2013-02-28.
  5. "Issue 6 reform wins big and sets in motion even bigger changes for Cuyahoga County". cleveland.com. 4 November 2009. Retrieved 2010-01-28.
  6. "OSBA - OSBA Staff Directory". www.ohiobar.org.
  7. "Title 3 - Ohio Revised Code | Ohio Laws".
  8. "Ohio QuickFacts". U.S. Census Bureau. Archived from the original on 2013-03-03. Retrieved 2013-02-27.
  9. "Population Estimates". U.S. Census Bureau. December 2009. Archived from the original on 2009-03-22. Retrieved 2013-02-27.
  10. "County FIPS Code Listing for the State of OHIO". United States Environmental Protection Agency. Retrieved 2016-07-09.
  11. "ODOT County Abbreviation Table" (PDF). Ohio Department of Transportation. May 1, 2013. Retrieved December 21, 2014.
  12. "Ohio Archaeological Inventory Form Instruction Manual" (PDF). Ohio Historic Preservation Office. June 2003. p. 61.
  13. "NACo - Find a County". Archived from the original on 2007-04-13. Retrieved 2007-07-22.
  14. "Federal Roster: Counties of Ohio, Derivation of Name and Date of Erection" (PDF). Archived from the original on 2013-07-12. Retrieved 2013-07-21.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  15. Howe, Henry (1891). Historical Collections of Ohio. Vol. 2. Columbus, OH: Henry Howe and Son. (OH county source). Other editions available: ISBN 1425565735 and Google Books
  16. 2020 census
  17. Resolution of 111th Ohio General Assembly designating John Allen as the person for which Allen County was named.
  18. Ashtabula, Encyclopædia Britannica, 2007. Accessed 2007-11-19.
  19. Cuyahoga River, Encyclopædia Britannica, 2007. Accessed 2007-11-19.
  20. About Fulton County
  21. Mahr, August C. (April 1957). "Indian River and Place Names in Ohio". Ohio Archaeological and Historical Quarterly. 66 (2): 146–148.
  22. Downes, p. 368.
  23. Taylor & Taylor, p. 40.
  24. "Noble County data". Ohio State University Extension Data Center. Archived from the original on 2008-02-13. Retrieved 2007-04-28.

Further reading
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