Ohio County Map With Cities
Complete list of all 88 counties in Ohio with population, area, and median income — plus a free printable blank map.
Tap or click any county for details. Need a printable version? Blank Ohio county map (PDF/PNG/SVG).
All 88 Ohio counties
| County | Largest City | Population ▼ | Area | Median Income | Cities |
|---|---|---|---|---|---|
| Franklin | Columbus | 1,324,154 | 532 mi² | $79,373 | 14 |
| Cuyahoga | Cleveland | 1,251,589 | 457 mi² | $70,950 | 21 |
| Hamilton | Cincinnati | 842,501 | 406 mi² | $76,743 | 10 |
| Summit | Akron | 541,944 | 413 mi² | $79,648 | 18 |
| Montgomery | Dayton | 507,675 | 462 mi² | $70,797 | 10 |
| Lucas | Toledo | 424,349 | 341 mi² | $67,502 | 12 |
| Butler | Hamilton | 389,474 | 467 mi² | $82,460 | 14 |
| Stark | Canton | 359,009 | 575 mi² | $68,346 | 20 |
| Lorain | Lorain | 307,803 | 491 mi² | $79,760 | 13 |
| Lake | Mentor | 231,954 | 227 mi² | $81,295 | 9 |
| Warren | Mason | 230,451 | 401 mi² | $111,189 | 12 |
| Delaware | Delaware | 227,622 | 443 mi² | $134,622 | 10 |
| Mahoning | Youngstown | 224,739 | 412 mi² | $59,052 | 18 |
| Clermont | Loveland | 221,512 | 452 mi² | $90,139 | 16 |
| Greene | Fairborn | 204,272 | 414 mi² | $85,446 | 11 |
| Trumbull | Warren | 193,501 | 618 mi² | $58,249 | 23 |
| Fairfield | Lancaster | 190,518 | 504 mi² | $90,290 | 14 |
| Medina | Medina | 182,763 | 421 mi² | $96,630 | 13 |
| Portage | Kent | 170,954 | 487 mi² | $78,451 | 16 |
| Licking | Newark | 164,212 | 683 mi² | $89,136 | 18 |
| Clark | Springfield | 134,795 | 397 mi² | $64,757 | 11 |
| Wood | Perrysburg | 132,190 | 617 mi² | $77,043 | 29 |
| Richland | Mansfield | 125,955 | 495 mi² | $60,542 | 7 |
| Wayne | Wooster | 116,267 | 555 mi² | $73,250 | 15 |
| Allen | Lima | 108,577 | 403 mi² | $64,643 | 9 |
| Miami | Troy | 105,795 | 407 mi² | $78,498 | 11 |
| Columbiana | Salem | 103,314 | 532 mi² | $61,813 | 20 |
| Ashtabula | Ashtabula | 97,097 | 702 mi² | $59,386 | 15 |
| Muskingum | Zanesville | 91,982 | 665 mi² | $62,587 | 17 |
| Tuscarawas | New Philadelphia | 91,570 | 568 mi² | $67,348 | 18 |
| Geauga | Chardon | 91,082 | 400 mi² | $106,424 | 12 |
| Erie | Sandusky | 77,612 | 252 mi² | $70,277 | 8 |
| Ross | Chillicothe | 75,423 | 689 mi² | $61,815 | 10 |
| Scioto | Portsmouth | 73,321 | 610 mi² | $52,353 | 13 |
| Huron | Norwalk | 72,740 | 492 mi² | $69,718 | 11 |
| Hancock | Findlay | 68,990 | 531 mi² | $72,222 | 12 |
| Jefferson | Steubenville | 65,374 | 408 mi² | $59,631 | 21 |
| Marion | Marion | 65,284 | 404 mi² | $58,266 | 9 |
| Belmont | Saint Clairsville | 65,182 | 532 mi² | $60,400 | 27 |
| Knox | Mount Vernon | 62,917 | 525 mi² | $72,773 | 9 |
| Seneca | Tiffin | 60,208 | 551 mi² | $66,012 | 14 |
| Pickaway | Circleville | 58,171 | 501 mi² | $76,551 | 8 |
| Washington | Marietta | 57,228 | 632 mi² | $64,305 | 18 |
| Madison | London | 56,968 | 466 mi² | $102,542 | 7 |
| Lawrence | Ironton | 56,680 | 453 mi² | $57,707 | 10 |
| Athens | Athens | 53,129 | 504 mi² | $55,254 | 16 |
| Sandusky | Fremont | 52,068 | 408 mi² | $62,417 | 8 |
| Darke | Greenville | 51,969 | 598 mi² | $65,688 | 16 |
| Union | Marysville | 51,752 | 432 mi² | $96,422 | 8 |
| Ashland | Ashland | 50,846 | 423 mi² | $70,607 | 10 |
| Holmes | Millersburg | 50,152 | 423 mi² | $80,217 | 16 |
| Fulton | Wauseon | 46,931 | 405 mi² | $72,996 | 8 |
| Clinton | Wilmington | 46,780 | 409 mi² | $74,880 | 10 |
| Shelby | Sidney | 45,834 | 408 mi² | $74,577 | 11 |
| Auglaize | Wapakoneta | 45,421 | 401 mi² | $79,808 | 10 |
| Logan | Bellefontaine | 44,894 | 458 mi² | $74,433 | 13 |
| Highland | Hillsboro | 42,566 | 553 mi² | $65,071 | 7 |
| Mercer | Celina | 42,549 | 462 mi² | $79,276 | 10 |
| Morrow | Galion | 41,646 | 406 mi² | $71,360 | 10 |
| Preble | Eaton | 40,293 | 424 mi² | $67,443 | 11 |
| Brown | Georgetown | 39,292 | 490 mi² | $71,970 | 11 |
| Perry | Thornville | 39,109 | 408 mi² | $71,771 | 11 |
| Defiance | Defiance | 38,068 | 411 mi² | $71,501 | 8 |
| Ottawa | Port Clinton | 37,849 | 255 mi² | $75,711 | 15 |
| Guernsey | Cambridge | 37,709 | 522 mi² | $59,416 | 13 |
| Carroll | Carrollton | 37,707 | 395 mi² | $68,543 | 12 |
| Williams | Bryan | 37,660 | 421 mi² | $63,706 | 10 |
| Champaign | Urbana | 37,574 | 429 mi² | $75,003 | 11 |
| Putnam | Ottawa | 35,725 | 483 mi² | $84,892 | 14 |
| Hocking | Logan | 34,580 | 421 mi² | $63,745 | 9 |
| Hardin | Kenton | 34,157 | 470 mi² | $64,079 | 10 |
| Coshocton | Coshocton | 33,734 | 564 mi² | $54,444 | 11 |
| Jackson | Jackson | 32,451 | 420 mi² | $58,349 | 5 |
| Adams | West Union | 32,135 | 584 mi² | $53,820 | 10 |
| Gallia | Gallipolis | 29,243 | 467 mi² | $57,581 | 8 |
| Crawford | Bucyrus | 27,580 | 402 mi² | $59,522 | 8 |
| Henry | Napoleon | 27,280 | 416 mi² | $78,728 | 11 |
| Meigs | Pomeroy | 25,860 | 430 mi² | $55,183 | 13 |
| Fayette | Washington Court House | 25,801 | 406 mi² | $62,172 | 4 |
| Pike | Waverly | 24,168 | 440 mi² | $50,677 | 8 |
| Van Wert | Van Wert | 23,687 | 409 mi² | $66,757 | 8 |
| Wyandot | Upper Sandusky | 22,199 | 407 mi² | $71,168 | 7 |
| Paulding | Paulding | 18,010 | 416 mi² | $67,339 | 10 |
| Noble | Caldwell | 14,225 | 398 mi² | $57,622 | 8 |
| Morgan | Mcconnelsville | 14,074 | 416 mi² | $57,767 | 5 |
| Harrison | Cadiz | 13,577 | 402 mi² | $55,584 | 10 |
| Vinton | McArthur | 12,635 | 412 mi² | $55,592 | 8 |
| Monroe | Woodsfield | 11,656 | 456 mi² | $60,017 | 11 |
How many counties does Ohio have?
Ohio has 88 counties covering 40,861 square miles and roughly 11,810,293 residents. The state was admitted to the Union in 1803 as the 17th state, and the current county boundaries reflect more than a century of administrative subdivision.
The largest county by land area is Ashtabula County at 702 square miles, home to about 97,097 residents. The most populous is Franklin County with approximately 1,324,154 residents — a density of about 2,489 people per square mile.
At the other end of the scale, Monroe County has only about 11,656 residents.
Columbus is both the state capital and the largest city in Ohio.
Related resources
Download a printable outline of Ohio’s county boundaries from our blank map of Ohio page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Ohio county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Ohio address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Ohio specifically: the 100-mile radius around Columbus measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Ohio ranks the state’s most isolated inhabited place. The county-counts blog post puts Ohio’s 88 counties in national context.
Frequently asked questions
Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. Countiesboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,144). All sources are public domain.