This is a list of the eighty-eight (88) counties in the state of Ohio. The Ohio Constitution allows counties to set up a charter government as many cities and villages do, but only Summit County has done so.
Ohio is a Midwestern state of the United States. Part of the Great Lakes region, Ohio has long been a cultural and geographical crossroads in North America. At the time of European contact and in the years that followed, Native Americans in today's Ohio included the Shawnee, Iroquois, Miamis, and Wyandots. Beginning in the 1700s, the area was settled by people from New England, the Mid-Atlantic States, Appalachia, and the Upper South.
Ohio was the first state admitted to the Union under the Northwest Ordinance. Its US postal abbreviation is OH; its old-style abbreviation was O. Natives of Ohio are known as Ohioans or Buckeyes, after the buckeye tree.
Find a brief history of Ohio Counties | ||||
---|---|---|---|---|
County | 2000 Population |
Square Miles |
County Seat | Created |
Adams County | 27,330 | 584 | West Union | 1797 |
Allen County | 108,473 | 404 | Lima | 1820 |
Ashland County | 52,523 | 424 | Ashland | 1846 |
Ashtabula County | 102,728 | 703 | Jefferson | 1807 |
Athens County | 62,223 | 507 | Athens | 1805 |
Auglaize County | 46,611 | 401 | Wapakoneta | 1848 |
Belmont County | 70,226 | 537 | Saint Clairsville | 1801 |
Brown County | 42,285 | 492 | Georgetown | 1817 |
Butler County | 332,807 | 467 | Hamilton | 1803 |
Carroll County | 28,836 | 395 | Carrollton | 1832 |
Champaign County | 38,890 | 429 | Urbana | 1805 |
Clark County | 144,742 | 400 | Springfield | 1817 |
Clermont County | 177,977 | 452 | Batavia | 1800 |
Clinton County | 40,543 | 411 | Wilmington | 1810 |
Columbiana County | 112,075 | 532 | Lisbon | 1803 |
Coshocton County | 36,655 | 564 | Coshocton | 1811 |
Crawford County | 46,966 | 402 | Bucyrus | 1820 |
Cuyahoga County | 1,393,978 | 458 | Cleveland | 1808 |
Darke County | 53,309 | 600 | Greenville | 1809 |
Defiance County | 39,500 | 411 | Defiance | 1845 |
Delaware County | 109,989 | 442 | Delaware | 1808 |
Erie County | 79,551 | 254 | Sandusky | 1838 |
Fairfield County | 122,759 | 506 | Lancaster | 1800 |
Fayette County | 28,433 | 407 | Washington Court House | 1810 |
Franklin County | 1,068,978 | 540 | Columbus | 1803 |
Fulton County | 42,084 | 407 | Wauseon | 1850 |
Gallia County | 31,069 | 469 | Gallipolis | 1803 |
Geauga County | 90,895 | 404 | Chardon | 1805 |
Greene County | 147,886 | 415 | Xenia | 1803 |
Guernsey County | 40,792 | 522 | Cambridge | 1810 |
Hamilton County | 845,303 | 407 | Cincinnati | 1790 |
Hancock County | 71,295 | 531 | Findlay | 1820 |
Hardin County | 31,945 | 470 | Kenton | 1820 |
Harrison County | 15,856 | 404 | Cadiz | 1813 |
Henry County | 29,210 | 416 | Napoleon | 1820 |
Highland County | 40,875 | 553 | Hillsboro | 1805 |
Hocking County | 28,241 | 423 | Logan | |
Holmes County | 38,943 | 423 | Millersburg | 1824 |
Huron County | 59,487 | 493 | Norwalk | 1815 |
Jackson County | 32,641 | 420 | Jackson | 1816 |
Jefferson County | 73,894 | 410 | Steubenville | 1797 |
Knox County | 54,500 | 527 | Mount Vernon | 1808 |
Lake County | 227,511 | 228 | Painesville | 1840 |
Lawrence County | 62,319 | 455 | Ironton | 1815 |
Licking County | 145,491 | 686 | Newark | 1808 |
Logan County | 46,005 | 458 | Bellefontaine | 1817 |
Lorain County | 284,664 | 493 | Elyria | 1822 |
Lucas County | 455,054 | 340 | Toledo | 1835 |
Madison County | 40,213 | 465 | London | 1810 |
Mahoning County | 257,555 | 415 | Youngstown | 1846 |
Marion County | 66,217 | 404 | Marion | 1820 |
Medina County | 151,095 | 422 | Medina | 1812 |
Meigs County | 23,072 | 430 | Pomeroy | 1819 |
Mercer County | 40,924 | 463 | Celina | 1820 |
Miami County | 98,868 | 407 | Troy | 1807 |
Monroe County | 15,180 | 456 | Woodsfield | 1813 |
Montgomery County | 559,062 | 462 | Dayton | 1803 |
Morgan County | 14,897 | 418 | McConnelsville | 1817 |
Morrow County | 31,628 | 406 | Mount Gilead | 1848 |
Muskingum County | 84,585 | 665 | Zanesville | 1804 |
Noble County | 14,058 | 399 | Caldwell | 1851 |
Ottawa County | 40,985 | 255 | Port Clinton | 1840 |
Paulding County | 20,293 | 416 | Paulding | 1820 |
Perry County | 34,078 | 410 | New Lexington | 1817 |
Pickaway County | 52,727 | 502 | Circleville | 1810 |
Pike County | 27,695 | 442 | Waverly | 1815 |
Portage County | 152,061 | 492 | Ravenna | 1807 |
Preble County | 42,337 | 425 | Eaton | 1808 |
Putnam County | 34,726 | 484 | Ottawa | 1820 |
Richland County | 128,852 | 497 | Mansfield | 1813 |
Ross County | 73,345 | 688 | Chillicothe | 1798 |
Sandusky County | 61,792 | 409 | Fremont | 1820 |
Scioto County | 79,195 | 612 | Portsmouth | 1803 |
Seneca County | 58,683 | 551 | Tiffin | 1820 |
Shelby County | 47,910 | 409 | Sidney | 1819 |
Stark County | 378,098 | 576 | Canton | 1808 |
Summit County | 542,899 | 413 | Akron | 1840 |
Trumbull County | 225,116 | 616 | Warren | 1800 |
Tuscarawas County | 90,914 | 568 | New Philadelphia | 1808 |
Union County | 40,909 | 437 | Marysville | 1820 |
Van Wert County | 29,659 | 410 | Van Wert | 1820 |
Vinton County | 12,806 | 414 | McArthur | 1850 |
Warren County | 158,383 | 400 | Lebanon | 1803 |
Washington County | 63,251 | 635 | Marietta | 1788 |
Wayne County | 111,564 | 555 | Wooster | 1786 |
Williams County | 39,188 | 422 | Bryan | 1820 |
Wood County | 121,065 | 617 | Bowling Green | 1820 |
Wyandot County | 22,908 | 406 | Upper Sandusky | 1845 |