Counties in Ohio
Ohio has 88 counties. Find yours from your location, or explore the map and the full list with seats, population, time zones and FIPS codes.
Updated · Data: U.S. Census Bureau
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Ohio has 88 counties, home to about 11,780,046 people. Sort the table by any column, or search by name or seat.
Counties88Eastern time
Most peopleFranklin County1,321,635 residents, 11% of the state
Fewest peopleVinton County12,686 residents
Most crowdedCuyahoga County2,733 people per sq mi
Largest by landAshtabula County702.4 sq mi
Priciest homesDelaware Countymedian value $419,500
Ohio county map
Population13k28k38k46k65k101k210kno data
County explorer: all 88 counties in Ohio
| County | Seat | Population | Land sq mi | People / sq mi | Median home | Time zone | FIPS |
|---|---|---|---|---|---|---|---|
| Franklin | Columbus | 1,321,635 | 532.4 | 2,482 | $265,700 | Eastern | 39049 |
| Cuyahoga | Cleveland | 1,249,418 | 457.2 | 2,733 | $183,200 | Eastern | 39035 |
| Hamilton | Cincinnati | 827,878 | 405.5 | 2,042 | $225,700 | Eastern | 39061 |
| Summit | Akron | 538,087 | 412.8 | 1,304 | $195,700 | Eastern | 39153 |
| Montgomery | Dayton | 535,528 | 461.4 | 1,161 | $167,400 | Eastern | 39113 |
| Lucas | Toledo | 428,748 | 339.7 | 1,262 | $155,200 | Eastern | 39095 |
| Butler | Hamilton | 389,910 | 466.5 | 836 | $243,000 | Eastern | 39017 |
| Stark | Canton | 373,764 | 575.2 | 650 | $177,700 | Eastern | 39151 |
| Lorain | Elyria | 314,588 | 490.5 | 641 | $207,200 | Eastern | 39093 |
| Warren | Lebanon | 246,364 | 401.4 | 614 | $319,700 | Eastern | 39165 |
| Lake | Painesville | 232,101 | 229.4 | 1,012 | $199,900 | Eastern | 39085 |
| Mahoning | Youngstown | 227,063 | 411.5 | 552 | $141,100 | Eastern | 39099 |
| Delaware | Delaware | 221,160 | 443.1 | 499 | $419,500 | Eastern | 39041 |
| Clermont | Batavia | 209,862 | 452.6 | 464 | $245,600 | Eastern | 39025 |
| Trumbull | Warren | 201,367 | 617.6 | 326 | $128,100 | Eastern | 39155 |
| Medina | Medina | 183,049 | 421.5 | 434 | $268,000 | Eastern | 39103 |
| Licking | Newark | 180,311 | 682.4 | 264 | $250,700 | Eastern | 39089 |
| Greene | Xenia | 168,531 | 413.6 | 407 | $238,000 | Eastern | 39057 |
| Portage | Ravenna | 161,421 | 487.4 | 331 | $210,500 | Eastern | 39133 |
| Fairfield | Lancaster | 161,289 | 504.4 | 320 | $272,200 | Eastern | 39045 |
| Clark | Springfield | 135,445 | 395.9 | 342 | $155,900 | Eastern | 39023 |
| Wood | Bowling Green | 131,795 | 617.2 | 214 | $214,400 | Eastern | 39173 |
| Richland | Mansfield | 125,138 | 495.2 | 253 | $154,000 | Eastern | 39139 |
| Wayne | Wooster | 116,618 | 554.8 | 210 | $204,600 | Eastern | 39169 |
| Miami | Troy | 109,549 | 406.6 | 269 | $209,200 | Eastern | 39109 |
| Allen | Lima | 101,685 | 402.5 | 253 | $158,400 | Eastern | 39003 |
| Columbiana | Lisbon | 101,203 | 531.9 | 190 | $139,100 | Eastern | 39029 |
| Ashtabula | Jefferson | 97,343 | 702.4 | 139 | $149,600 | Eastern | 39007 |
| Geauga | Chardon | 95,479 | 400.4 | 238 | $305,100 | Eastern | 39055 |
| Tuscarawas | New Philadelphia | 92,585 | 567.6 | 163 | $176,800 | Eastern | 39157 |
| Muskingum | Zanesville | 86,382 | 664.5 | 130 | $170,100 | Eastern | 39119 |
| Ross | Chillicothe | 76,748 | 689.2 | 111 | $158,500 | Eastern | 39141 |
| Erie | Sandusky | 74,938 | 251.3 | 298 | $183,900 | Eastern | 39043 |
| Hancock | Findlay | 74,885 | 531.3 | 141 | $196,500 | Eastern | 39063 |
| Scioto | Portsmouth | 73,118 | 610.2 | 120 | $132,300 | Eastern | 39145 |
| Belmont | St. Clairsville | 65,982 | 532.1 | 124 | $143,000 | Eastern | 39013 |
| Union | Marysville | 65,293 | 431.7 | 151 | $306,600 | Eastern | 39159 |
| Marion | Marion | 65,145 | 403.8 | 161 | $146,200 | Eastern | 39101 |
| Jefferson | Steubenville | 64,855 | 408.1 | 159 | $120,600 | Eastern | 39081 |
| Knox | Mount Vernon | 62,888 | 525.5 | 120 | $218,300 | Eastern | 39083 |
| Athens | Athens | 61,573 | 503.6 | 122 | $173,800 | Eastern | 39009 |
| Pickaway | Circleville | 59,407 | 501.3 | 119 | $235,700 | Eastern | 39129 |
| Washington | Marietta | 59,318 | 632.0 | 94 | $174,100 | Eastern | 39167 |
| Sandusky | Fremont | 58,770 | 408.2 | 144 | $152,500 | Eastern | 39143 |
| Huron | Norwalk | 58,412 | 492.2 | 119 | $158,900 | Eastern | 39077 |
| Lawrence | Ironton | 57,385 | 453.4 | 127 | $135,600 | Eastern | 39087 |
| Seneca | Tiffin | 54,861 | 551.0 | 100 | $136,200 | Eastern | 39147 |
| Ashland | Ashland | 52,296 | 423.0 | 124 | $175,900 | Eastern | 39005 |
| Darke | Greenville | 51,655 | 598.1 | 86 | $169,100 | Eastern | 39037 |
| Shelby | Sidney | 48,007 | 407.7 | 118 | $190,300 | Eastern | 39149 |
| Auglaize | Wapakoneta | 46,209 | 401.4 | 115 | $182,000 | Eastern | 39011 |
| Logan | Bellefontaine | 46,140 | 458.5 | 101 | $186,200 | Eastern | 39091 |
| Holmes | Millersburg | 44,312 | 422.6 | 105 | $251,800 | Eastern | 39075 |
| Madison | London | 44,126 | 466.7 | 95 | $231,400 | Eastern | 39097 |
| Brown | Georgetown | 43,710 | 489.5 | 89 | $181,100 | Eastern | 39015 |
| Highland | Hillsboro | 43,403 | 553.1 | 78 | $157,000 | Eastern | 39071 |
| Mercer | Celina | 42,438 | 462.4 | 92 | $208,600 | Eastern | 39107 |
| Fulton | Wauseon | 42,434 | 405.4 | 105 | $176,000 | Eastern | 39051 |
| Clinton | Wilmington | 42,014 | 408.7 | 103 | $192,800 | Eastern | 39027 |
| Crawford | Bucyrus | 41,767 | 401.8 | 104 | $123,600 | Eastern | 39033 |
| Preble | Eaton | 40,802 | 424.2 | 96 | $171,100 | Eastern | 39135 |
| Ottawa | Port Clinton | 40,161 | 254.7 | 158 | $200,700 | Eastern | 39123 |
| Champaign | Urbana | 38,772 | 429.0 | 90 | $186,300 | Eastern | 39021 |
| Guernsey | Cambridge | 38,283 | 522.2 | 73 | $154,100 | Eastern | 39059 |
| Defiance | Defiance | 38,258 | 411.4 | 93 | $150,900 | Eastern | 39039 |
| Williams | Bryan | 36,862 | 420.7 | 88 | $140,000 | Eastern | 39171 |
| Coshocton | Coshocton | 36,679 | 563.9 | 65 | $142,300 | Eastern | 39031 |
| Perry | New Lexington | 35,474 | 407.9 | 87 | $178,300 | Eastern | 39127 |
| Morrow | Mount Gilead | 35,214 | 406.1 | 87 | $200,800 | Eastern | 39117 |
| Putnam | Ottawa | 34,352 | 482.5 | 71 | $191,600 | Eastern | 39137 |
| Jackson | Jackson | 32,588 | 420.3 | 78 | $140,400 | Eastern | 39079 |
| Hardin | Kenton | 30,527 | 470.3 | 65 | $134,800 | Eastern | 39065 |
| Gallia | Gallipolis | 29,162 | 466.5 | 63 | $135,000 | Eastern | 39053 |
| Fayette | Washington Court House | 28,880 | 406.4 | 71 | $162,200 | Eastern | 39047 |
| Van Wert | Van Wert | 28,824 | 409.1 | 70 | $137,300 | Eastern | 39161 |
| Hocking | Logan | 27,938 | 421.3 | 66 | $172,300 | Eastern | 39073 |
| Henry | Napoleon | 27,581 | 416.0 | 66 | $166,000 | Eastern | 39069 |
| Adams | West Union | 27,510 | 583.9 | 47 | $157,500 | Eastern | 39001 |
| Pike | Waverly | 27,080 | 440.3 | 62 | $148,500 | Eastern | 39131 |
| Carroll | Carrollton | 26,731 | 394.6 | 68 | $174,500 | Eastern | 39019 |
| Meigs | Pomeroy | 22,072 | 430.1 | 51 | $113,400 | Eastern | 39105 |
| Wyandot | Upper Sandusky | 21,699 | 406.9 | 53 | $159,500 | Eastern | 39175 |
| Paulding | Paulding | 18,800 | 416.4 | 45 | $126,800 | Eastern | 39125 |
| Harrison | Cadiz | 14,408 | 402.3 | 36 | $118,000 | Eastern | 39067 |
| Noble | Caldwell | 14,252 | 398.0 | 36 | $149,300 | Eastern | 39121 |
| Morgan | McConnelsville | 13,758 | 416.4 | 33 | $134,200 | Eastern | 39115 |
| Monroe | Woodsfield | 13,308 | 455.7 | 29 | $132,000 | Eastern | 39111 |
| Vinton | McArthur | 12,686 | 412.4 | 31 | $131,700 | Eastern | 39163 |
Which Ohio cities are in more than one county?
- Columbus: Franklin County 97.1%, Delaware County 1.6%, Fairfield County 1.2% of residents
- Kettering: Montgomery County 98.6%, Greene County 1.4% of residents
- Middletown: Butler County 93.4%, Warren County 6.6% of residents
- Dublin: Franklin County 82.5%, Union County 8.8%, Delaware County 8.7% of residents
- Huber Heights: Montgomery County 87.1%, Miami County 12.9% of residents
- Reynoldsburg: Franklin County 72.5%, Licking County 24.6%, Fairfield County 2.9% of residents
- Westerville: Franklin County 76.1%, Delaware County 23.9% of residents
- Alliance: Stark County 99.8%, Mahoning County 0.2% of residents
- Springboro: Warren County 92.2%, Montgomery County 7.8% of residents
- Tallmadge: Summit County 98.2%, Portage County 1.8% of residents
- Sharonville: Hamilton County 81.9%, Butler County 18.1% of residents
- Loveland: Hamilton County 72.6%, Clermont County 19.1%, Warren County 8.3% of residents
Sources: Census TIGER/Line 2024; ACS 2019-2023 5-year; Wikidata, CC0 (seats); timezone-boundary-builder (time zones). Data as of November 1, 2026. Not affiliated with any government agency.
FAQ
Frequently asked questions
How many counties are in Ohio?
88.
What is the most populated county in Ohio?
Franklin County, with about 1,321,635 people (11% of the state).
What is the least populated county in Ohio?
Vinton County, with about 12,686 people.
What is the largest county in Ohio by land?
Ashtabula County, 702.4 sq mi of land.
What county am I in, in Ohio?
Use the tool at the top of this page: press Use my current location, or type your city or ZIP code.