Description: Detailed large map of Ohio State, USA showing cities, towns, county formations, roads highway, US highways and State routes.
Map of Ohio (USA). Ohio map with cities, counties, and towns. Use this detailed map to understand Ohio's full county grid, every administrative capital (county seat), the major cities and towns, bordering states and waters, and a few highway cues for orientation only. It is the best map style for residents, travelers, and geography students who want clarity without road clutter. Ohio sits in the eastern Midwest, bordered by Pennsylvania to the east, West Virginia and Kentucky along the Ohio River to the south and southeast, Indiana to the west, and Michigan to the northwest. Lake Erie forms the entire northern edge, with Canada across the water. Look at the map and the pattern is easy to read: all 88 counties sit in distinct colored blocks, each labeled with its county seat in bold, running from the Northeast Ohio cluster around Cleveland and Akron down through Central Ohio and Columbus to the Southwest around Cincinnati and Dayton. A road-light layer marks the interstate spine, I-70, I-71, I-75, I-77, and the I-80/90 Ohio Turnpike, along with the Ohio, Maumee, Scioto, Muskingum, and Great Miami rivers, giving enough orientation to place any county without cluttering the map with turn-by-turn detail.
Borders and waters at a glance: Pennsylvania sits directly to the east, while West Virginia and Kentucky line the southern and southeastern edge along the winding Ohio River. Indiana closes off the west side, and Michigan touches the northwest corner just above Toledo. Lake Erie forms the entire northern border, with the Lake Erie Islands sitting off Ottawa County and Canada visible across the water. Follow this on the map and the pattern holds up county after county: water, not a survey line, decides most of Ohio's edge, from the Ohio River carrying nearly the whole southern boundary to the lake shore doing the same job up north.
Road-light orientation: A handful of interstates carry most of the state. I-71 runs the Cleveland-Columbus-Cincinnati spine straight through Ohio's three largest metros. I-75 tracks the western side from Toledo down through Dayton to Cincinnati. I-70 crosses west to east through Dayton and Columbus on to Zanesville and Wheeling, West Virginia. I-77 links Cleveland to Akron and Canton and continues toward Marietta, and the I-80/90 Ohio Turnpike traces the Lake Erie corridor from the Indiana line to Pennsylvania. None of these lines are built for turn-by-turn navigation here; the map shows them only so you can confirm which county you're looking at.
Lucas County (Toledo) occupies the Maumee Bay with suburbs like Sylvania, Oregon, and Maumee. The map's road-light threads of I-75 and I-280 sketch the port approaches without masking the county label.
Ottawa County (Port Clinton) stretches along the peninsula and islands. Port Clinton is the seat, with Marblehead, Catawba Island, Kelleys Island, and Put-in-Bay shown offshore.
Sandusky County (Fremont) lies just inland along the Sandusky River. Fremont appears centrally with Clyde and Gibsonburg nearby.
Erie County (Sandusky) contains the city of Sandusky, the Cedar Point shoreline, and Huron at the mouth of the Huron River.
Huron County (Norwalk) sits south of Erie and Sandusky, with Norwalk serving as the seat and the towns of Willard and New London labeled.
Wood County (Bowling Green) runs south of Toledo with Bowling Green, Perrysburg, and the Maumee River corridor.
Hancock County (Findlay) centers on Findlay, a classic county-seat grid with Arlington and McComb in view.
Seneca County (Tiffin) shows twin universities in Tiffin, with Fostoria on the county edge.
Wyandot County (Upper Sandusky) displays Upper Sandusky on the Sandusky River bend, alongside Carey and Sycamore.
Williams County (Bryan) sits on the tri-state corner with Michigan and Indiana; Bryan anchors a grid of small towns.
Fulton County (Wauseon) runs along the Michigan border, with Wauseon, Archbold, and Delta identified.
Defiance County (Defiance) places Defiance at the Maumee and Auglaize confluence.
Henry County (Napoleon) aligns the Maumee's rich floodplain with the seat Napoleon and crossroads Deshler.
Paulding County (Paulding) holds Paulding and Antwerp near the Maumee's upper valley.
Putnam County (Ottawa) is a classic agricultural county with Ottawa as the seat and towns Leipsic, Kalida, and Pandora.
Van Wert County (Van Wert) spotlights Van Wert on US-30, with Delphos shared with Allen County.
Allen County (Lima) shows Lima on the Ottawa River, plus Elida and Shawnee Township.
Auglaize County (Wapakoneta) includes Wapakoneta, St. Marys, and the lake chain around Grand Lake St. Marys near the Mercer County line.
Mercer County (Celina) features Celina and Coldwater; the road-light lake outline keeps the shoreline readable.
Marion County (Marion) is a north-central anchor with Marion on a tidy grid; LaRue and Caledonia appear nearby.
Crawford County (Bucyrus) contains Bucyrus and Galion, with rail-era town spacing still visible.
Richland County (Mansfield) centers on Mansfield between the Clear Fork and Black Fork branches of the Mohican River.
Morrow County (Mount Gilead) displays Mount Gilead at the crossroads of state routes.
Knox County (Mount Vernon) nestles Mount Vernon on the Kokosing River curve with Gambier close by.
Ashland County (Ashland) bridges the Erie-to-Appalachian transition around Ashland and Loudonville.
Wayne County (Wooster) shows Wooster amid rolling dairy country, with Orrville and Rittman marked.
Holmes County (Millersburg) is the heart of Amish Country; Millersburg sits near the county center, while the map cleanly labels Berlin, Walnut Creek, and Charm without road clutter.
Delaware County (Delaware) presents fast-growing suburbs around Delaware, Powell, and the Alum Creek lakes.
Union County (Marysville) lies just northwest of Columbus, with Marysville and Plain City.
Franklin County (Columbus) is the centrally located capital county. The map shows Columbus and its suburbs Dublin, Hilliard, Gahanna, Reynoldsburg, Westerville, Upper Arlington, and Grove City while keeping county boundaries crisp.
Licking County (Newark) displays Newark, Heath, and Granville along the Licking River network.
Fairfield County (Lancaster) charts the Hocking Hills gateway north edge around Lancaster and Pickerington.
Pickaway County (Circleville) positions Circleville on the Scioto River with Ashville and Commercial Point nearby.
Madison County (London) shows London on the US-42 spine with West Jefferson close to Franklin.
Clark County (Springfield) contains Springfield along the Mad River with Enon near the county line.
Logan County (Bellefontaine) rises over Ohio's high ground; Bellefontaine and Indian Lake appear clearly.
Champaign County (Urbana) sits south of Urbana on the Glaciated Allegheny Plateau.
Hardin County (Kenton) features Kenton with a grid of small farm towns like Ada. To the west, Hancock County (already covered above) continues the I-75 corridor south.
Cuyahoga County (Cleveland) uses a dense label stack for Cleveland, Lakewood, Parma, Euclid, and Cleveland Heights while county borders remain visible.
Lake County (Painesville) trims the Lake Erie shore east of Cleveland, with Mentor and Willoughby.
Geauga County (Chardon) presents Chardon on elevated ground, with Burton and Middlefield indicated.
Medina County (Medina) shows the classic town square of Medina with communities Brunswick and Wadsworth.
Summit County (Akron) displays Akron, Cuyahoga Falls, and the ribbon of Cuyahoga Valley National Park between Akron and Cleveland.
Portage County (Ravenna) includes Ravenna, Kent, and the Portage Lakes region.
Lorain County (Elyria) includes Elyria and Lorain at the mouth of the Black River.
Ashtabula County (Jefferson) reaches to the Pennsylvania line and is Ohio's largest county by land area; Ashtabula harbor sits on the lake with the seat Jefferson inland.
Trumbull County (Warren) centers Warren with Niles in the Mahoning Valley.
Mahoning County (Youngstown) shows Youngstown, Boardman, and Austintown.
Stark County (Canton) places Canton and Massillon along the Tuscarawas River.
Carroll County (Carrollton) is more rural, with Atwood Lake near the county edge.
Tuscarawas County (New Philadelphia) includes New Philadelphia and Dover with the Muskingum headwaters.
Columbiana County (Lisbon) runs to the Ohio River with East Liverpool, Salem, and the seat of Lisbon.
Montgomery County (Dayton) shows Dayton at the confluence of the Great Miami, Stillwater, and Mad Rivers, with Kettering, Miamisburg, and Trotwood labeled.
Greene County (Xenia) sits east of Montgomery around Xenia, Beavercreek, and the Little Miami Scenic River corridor.
Miami County (Troy) includes Troy and Piqua along the Great Miami River.
Shelby County (Sidney) carries Sidney and Anna near I-75.
Darke County (Greenville) lies at the Indiana line, known for Greenville and Versailles.
Preble County (Eaton) is a border county with Eaton at a tidy crossroads.
Butler County (Hamilton) stretches from Hamilton and Middletown to suburbs like West Chester.
Warren County (Lebanon) shows Lebanon, Mason, and the Kings Island area.
Hamilton County (Cincinnati) features Cincinnati on the Ohio River bends, plus Norwood and riverfront bridges into Kentucky.
Clermont County (Batavia) lies to the east with Batavia, Milford, and Amelia.
Brown County (Georgetown) fronts the river with Ripley and Aberdeen, opposite Kentucky towns.
Adams County (West Union) sits between Brown and Scioto along the Ohio River bluffs, with the Serpent Mound earthwork marked near Peebles.
Highland County (Hillsboro) is slightly inland with Hillsboro and Rocky Fork Lake.
Clinton County (Wilmington) ties into the I-71 corridor with Wilmington.
Fayette County (Washington Court House) places the courthouse square in the name, midway on US-35.
Ross County (Chillicothe) shows Chillicothe on the Scioto River with the Hopewell earthworks region nearby.
Pike County (Waverly) runs south with Waverly and the Scioto Valley.
Scioto County (Portsmouth) puts Portsmouth at the meeting of the Scioto and the Ohio River.
Lawrence County (Ironton) lies along the river opposite Huntington, West Virginia; Ironton is the seat.
Gallia County (Gallipolis) highlights French-influenced Gallipolis and the Rio Grande inland.
Hocking County (Logan) anchors the Hocking Hills with Logan, Laurelville, and park names easily read in the road-light design, just south of Fairfield County.
Jackson County (Jackson) sits between Vinton and Scioto in the old Hanging Rock iron-furnace district, with Buckeye Furnace preserved nearby.
Vinton County (McArthur) is Ohio's most rural county, its least populous, and its seat is McArthur.
Athens County (Athens) includes the university city of Athens on the Hocking River.
Meigs County (Pomeroy) runs along a curvy Ohio River, with the seat Pomeroy tucked between bluffs and water.
Perry County (New Lexington) lies north of Hocking with New Lexington.
Morgan County (McConnelsville) follows the Muskingum River with historic locks.
Washington County (Marietta) sits at the Muskingum-Ohio confluence, where Marietta, Ohio's oldest permanent settlement and seat of its oldest county, opens the state's original river gateway.
Muskingum County (Zanesville) shows the Y-bridge city at the Licking and Muskingum meeting point.
Coshocton County (Coshocton) places Coshocton near Roscoe Village, where the canal era is remembered.
Guernsey County (Cambridge) sits on I-70 with Cambridge at the crossroads to Salt Fork.
Noble County (Caldwell) is one of Ohio's least populous, with Caldwell at the interstate.
Belmont County (St. Clairsville) looks over the river valley with St. Clairsville and the industrial corridor near Bellaire.
Monroe County (Woodsfield) runs along rugged bluffs with small river towns like Hannibal.
Harrison County (Cadiz) is a rural hill county between Carroll and Belmont, with Tappan Lake and the actor Clark Gable's birthplace both marked near the seat.
Jefferson County (Steubenville) fronts bridges to West Virginia at Steubenville and Toronto. Together with Columbiana County to the north, already covered in the northeast section, these two counties complete Ohio's eastern edge along the Pennsylvania and West Virginia lines.
Several rivers do most of the orientation work on this page. The Ohio River traces the entire south and southeast border past Cincinnati, Portsmouth, Marietta, and Steubenville. The Maumee River drains the northwest corner into Lake Erie at Toledo. The Scioto River runs from the Appalachian foothills through Columbus to the Ohio River at Portsmouth. The Muskingum River threads the southeast hill country past Zanesville and Marietta, and the Great Miami and Little Miami rivers frame the Dayton-Cincinnati corridor in the southwest. Keep these five in mind and any county on the map is easy to place.
The road layer is intentionally minimal. I-71 runs Cleveland-Columbus-Cincinnati. I-75 runs Toledo-Dayton-Cincinnati. I-70 crosses west to east from the Indiana line through Dayton and Columbus to Zanesville and the West Virginia line at Wheeling. I-77 runs Cleveland-Akron-Canton-Marietta toward West Virginia, and the I-80/90 Ohio Turnpike follows the Lake Erie belt from the Indiana line to Pennsylvania. None of these are meant for turn-by-turn navigation, only as county-placement cues.
Every one of Ohio's 88 counties and its seat, in alphabetical order: Adams County (West Union), Allen County (Lima), Ashland County (Ashland), Ashtabula County (Jefferson), Athens County (Athens), Auglaize County (Wapakoneta), Belmont County (St. Clairsville), Brown County (Georgetown), Butler County (Hamilton), Carroll County (Carrollton), Champaign County (Urbana), Clark County (Springfield), Clermont County (Batavia), Clinton County (Wilmington), Columbiana County (Lisbon), Coshocton County (Coshocton), Crawford County (Bucyrus), Cuyahoga County (Cleveland), Darke County (Greenville), Defiance County (Defiance), Delaware County (Delaware), Erie County (Sandusky), Fairfield County (Lancaster), Fayette County (Washington Court House), Franklin County (Columbus), Fulton County (Wauseon), Gallia County (Gallipolis), Geauga County (Chardon), Greene County (Xenia), Guernsey County (Cambridge), Hamilton County (Cincinnati), Hancock County (Findlay), Hardin County (Kenton), Harrison County (Cadiz), Henry County (Napoleon), Highland County (Hillsboro), Hocking County (Logan), Holmes County (Millersburg), Huron County (Norwalk), Jackson County (Jackson), Jefferson County (Steubenville), Knox County (Mount Vernon), Lake County (Painesville), Lawrence County (Ironton), Licking County (Newark), Logan County (Bellefontaine), Lorain County (Elyria), Lucas County (Toledo), Madison County (London), Mahoning County (Youngstown), Marion County (Marion), Medina County (Medina), Meigs County (Pomeroy), Mercer County (Celina), Miami County (Troy), Monroe County (Woodsfield), Montgomery County (Dayton), Morgan County (McConnelsville), Morrow County (Mount Gilead), Muskingum County (Zanesville), Noble County (Caldwell), Ottawa County (Port Clinton), Paulding County (Paulding), Perry County (New Lexington), Pickaway County (Circleville), Pike County (Waverly), Portage County (Ravenna), Preble County (Eaton), Putnam County (Ottawa), Richland County (Mansfield), Ross County (Chillicothe), Sandusky County (Fremont), Scioto County (Portsmouth), Seneca County (Tiffin), Shelby County (Sidney), Stark County (Canton), Summit County (Akron), Trumbull County (Warren), Tuscarawas County (New Philadelphia), Union County (Marysville), Van Wert County (Van Wert), Vinton County (McArthur), Warren County (Lebanon), Washington County (Marietta), Wayne County (Wooster), Williams County (Bryan), Wood County (Bowling Green), and Wyandot County (Upper Sandusky).
Ohio borders Pennsylvania to the east, West Virginia and Kentucky along the Ohio River to the south and southeast, Indiana to the west, and Michigan to the northwest, with Lake Erie and the Canadian shore beyond it forming the entire northern edge. The state holds 88 counties. Ashtabula County is the largest by land area at about 702 square miles, while its neighbor Lake County is the smallest at about 228 square miles. Franklin County, home to Columbus, is the most populous at roughly 1.36 million residents, and Vinton County is the least populous at roughly 12,645. Washington County, organized in 1788 around the pioneer settlement at Marietta, is the oldest county in the state. Ohio covers about 44,825 square miles in total, with roughly 40,861 square miles of land. The capital, Columbus, sits in Franklin County near the geographic center of the state, and the state's major metros run from Cleveland and Akron in the northeast through Columbus in the center to Cincinnati and Dayton in the southwest, with Toledo anchoring the northwest along the Maumee. Landscape-wise, the state moves from the flat Lake Erie plain and glaciated till plains across the center and west to the more rugged Appalachian Plateau hills in the southeast.
Ohio's roads get widened, rerouted, and renumbered more often than most drivers notice, but its 88 county lines have held steady for generations. Look at the map and Washington County is the proof: organized in 1788 around the pioneer settlement at Marietta, it's the oldest county in the state, and its boundary on this map is the same one settlers drew well over two centuries ago. That's the real reason this map of Ohio counties leads with color-coded blocks instead of a dense highway grid: the county line is what decides which courthouse handles your paperwork, which school district your address falls into, and who sets your property tax rate, none of which a road atlas will ever tell you. It matters for everyday things too. Ohio's ZIP codes don't follow county lines, so a single ZIP can span two counties, which means the county boundary, not the road network, is often the fact you actually need. Keeping the roads light on this map isn't about leaving information out; it's about keeping the page readable, whether you're hunting for a county seat, trying to figure out which side of a river a town sits on, or just getting your bearings before a longer drive.
Ohio's ten largest cities by current population are Columbus (about 938,396, Franklin County), Cleveland (about 363,608, Cuyahoga County), Cincinnati (about 314,367, Hamilton County), Toledo (about 263,423, Lucas County), Akron (about 189,691, Summit County), Dayton (about 136,688, Montgomery County), Parma (about 78,581, Cuyahoga County), Canton (about 69,001, Stark County), Lorain (about 65,366, Lorain County), and Hamilton (about 64,644, Butler County). Columbus anchors a fast-growing logistics, insurance, and technology corridor built around Ohio State University, with new semiconductor and data-center investment spreading into Licking and Delaware counties nearby. Cleveland and Akron carry the state's deepest manufacturing roots, from Cleveland's health care and advanced-materials firms to Akron's history as the rubber capital of the world. Cincinnati and Dayton anchor the southwest, and Dayton's Wright-Patterson Air Force Base, spanning Montgomery and Greene counties, stands as one of the state's largest employers and a direct link to the Wright brothers' aviation legacy. Toledo works as a Great Lakes shipping port on Lake Erie alongside Cleveland, Lorain, and Ashtabula, while Cincinnati moves freight on the Ohio River. Western Ohio's till plains, running through Mercer, Darke, and Wood counties, support corn, soybean, and hog farming on some of the flattest, most fertile ground in the state.
Ohio's cultural identity spans lake shore, farmland, and college towns. Along Lake Erie, Cedar Point in Erie County and the Lake Erie Islands off Ottawa County draw millions of summer visitors each year, and the wineries around Geneva-on-the-Lake in Ashtabula County add a lakeside wine trail. Holmes County anchors one of the largest Amish and Mennonite communities in the country, with Millersburg, Berlin, and Walnut Creek known for handmade furniture, cheese, and quilts. Higher education and college football run deep through the state's counties, led by Ohio State University in Franklin County, the University of Cincinnati in Hamilton County, Miami University in Butler County, and Kent State University in Portage County, with rivalries that shape fall weekends statewide. Dayton and Cleveland both carry an aerospace and manufacturing heritage worth noting here too: the Wright brothers built and tested their early aircraft around Dayton in Montgomery County, and NASA's Glenn Research Center still operates in Cuyahoga County today.
On this map, the Lake Erie shoreline (north) and the Ohio, Scioto, and Muskingum rivers double as landmarks for finding counties quickly. For elevation, terrain, watersheds, and land-cover detail, see our Physical Map of Ohio.
Ohio has a humid continental climate with warm, humid summers and cold winters, with lake-effect snow common near Lake Erie and slightly milder winters in the southern river counties. For a full seasonal and biome breakdown, see our Physical Map of Ohio.
North-south travel runs mainly on I-75 (Toledo to Dayton to Cincinnati) and I-77 (Cleveland to Akron to Canton to Marietta). East-west travel runs on I-70 (the Indiana line through Dayton and Columbus to Zanesville and Wheeling, West Virginia) and I-71 (Cleveland to Columbus to Cincinnati), with the I-80/90 Ohio Turnpike carrying Lake Erie belt traffic from Indiana to Pennsylvania. Keep in mind that ZIP codes do not follow county lines in Ohio, so a single ZIP code can span two counties. Always confirm the county name directly from the map or index rather than assuming it from a ZIP prefix.
Use this as a quick index. Every line lists the county with its county seat and a short cue about rivers, borders, or neighboring cities.
Lucas - Toledo; Maumee Bay port.
Ottawa - Port Clinton; islands offshore.
Sandusky - Fremont; on the Sandusky River.
Erie - Sandusky; Cedar Point shoreline.
Huron - Norwalk; south of the lake counties.
Wood - Bowling Green; south of Toledo.
Hancock - Findlay; on the I-75 corridor.
Seneca - Tiffin; twin college town.
Wyandot - Upper Sandusky; river bend seat.
Williams - Bryan; Michigan-Indiana tri-state corner.
Fulton - Wauseon; on the Michigan line.
Defiance - Defiance; Maumee-Auglaize confluence.
Henry - Napoleon; Maumee floodplain.
Paulding - Paulding; upper Maumee valley.
Putnam - Ottawa; agricultural county.
Van Wert - Van Wert; on US-30.
Allen - Lima; on the Ottawa River.
Auglaize - Wapakoneta; Grand Lake St. Marys nearby.
Mercer - Celina; lake county on the Indiana line.
Marion - Marion; north-central anchor.
Crawford - Bucyrus; rail-era town spacing.
Richland - Mansfield; on the Mohican River forks.
Morrow - Mount Gilead; state-route crossroads.
Knox - Mount Vernon; on the Kokosing River.
Ashland - Ashland; Erie-to-Appalachian transition.
Wayne - Wooster; rolling dairy country.
Holmes - Millersburg; heart of Amish Country.
Delaware - Delaware; fast-growing Columbus suburbs.
Union - Marysville; northwest of Columbus.
Franklin - Columbus; the capital county.
Licking - Newark; on the Licking River network.
Fairfield - Lancaster; Hocking Hills gateway.
Pickaway - Circleville; on the Scioto River.
Madison - London; on the US-42 spine.
Clark - Springfield; on the Mad River.
Logan - Bellefontaine; Ohio's high ground.
Champaign - Urbana; Glaciated Allegheny Plateau.
Hardin - Kenton; small farm-town grid.
Cuyahoga - Cleveland; metro anchor on the lake.
Lake - Painesville; smallest county by area.
Geauga - Chardon; elevated ground east of Cleveland.
Medina - Medina; classic town square.
Summit - Akron; Cuyahoga Valley National Park.
Portage - Ravenna; Portage Lakes region.
Lorain - Elyria; mouth of the Black River.
Ashtabula - Jefferson; largest county by area, on the Pennsylvania line.
Trumbull - Warren; Mahoning Valley.
Mahoning - Youngstown; steel-heritage city.
Stark - Canton; on the Tuscarawas River.
Carroll - Carrollton; rural, near Atwood Lake.
Tuscarawas - New Philadelphia; Muskingum headwaters.
Columbiana - Lisbon; reaches the Ohio River.
Montgomery - Dayton; three-river confluence.
Greene - Xenia; Little Miami Scenic River.
Miami - Troy; on the Great Miami River.
Shelby - Sidney; near I-75.
Darke - Greenville; on the Indiana line.
Preble - Eaton; border county crossroads.
Butler - Hamilton; Middletown to West Chester.
Warren - Lebanon; Kings Island area.
Hamilton - Cincinnati; Ohio River bends into Kentucky.
Clermont - Batavia; east of Cincinnati.
Brown - Georgetown; opposite Kentucky towns.
Adams - West Union; Serpent Mound area.
Highland - Hillsboro; near Rocky Fork Lake.
Clinton - Wilmington; on the I-71 corridor.
Fayette - Washington Court House; on US-35.
Ross - Chillicothe; Hopewell earthworks region.
Pike - Waverly; Scioto Valley.
Scioto - Portsmouth; Scioto meets the Ohio River.
Lawrence - Ironton; opposite Huntington, West Virginia.
Gallia - Gallipolis; French-influenced river city.
Hocking - Logan; Hocking Hills anchor.
Jackson - Jackson; historic iron-furnace district.
Vinton - McArthur; least populous county.
Athens - Athens; university city on the Hocking River.
Meigs - Pomeroy; tucked between bluffs and the river.
Perry - New Lexington; north of Hocking.
Morgan - McConnelsville; historic Muskingum River locks.
Washington - Marietta; Ohio's oldest county, founded 1788.
Muskingum - Zanesville; the Y-bridge city.
Coshocton - Coshocton; near Roscoe Village.
Guernsey - Cambridge; on I-70.
Noble - Caldwell; one of the least populous counties.
Belmont - St. Clairsville; overlooks the river valley.
Monroe - Woodsfield; rugged river bluffs.
Harrison - Cadiz; rural hill county near Tappan Lake.
Jefferson - Steubenville; bridges to West Virginia.
Navigation tip: on this road-light map, follow rivers as guide rails (Lake Erie shore, Maumee, Scioto, Muskingum, Great Miami, Little Miami, Hocking, Ohio River). Then use the thin interstates only to confirm the distance between county seats.
Ohio has 88 counties and the map shows every one with a colored block and county seat.
County boundaries, county seats and neighboring states, with only light road references for orientation.
Columbus in Franklin County, near the geographic center of the state.
Cuyahoga County.
Hamilton County.
Lucas County.
Summit County.
Montgomery County.
Mahoning County.
Stark County.
Lucas, Ottawa, Sandusky, Erie, Lorain, Cuyahoga, Lake and Ashtabula.
Hamilton, Clermont, Brown, Adams, Scioto, Lawrence, Gallia, Meigs, Washington, Monroe, Belmont, Jefferson and Columbiana.
Ashtabula, Trumbull, Mahoning and Columbiana.
Columbiana, Jefferson, Belmont, Monroe, Washington, Meigs, Gallia and Lawrence, all along the Ohio River.
Lawrence, Scioto, Adams, Brown, Clermont and Hamilton, all along the Ohio River.
Williams, Defiance, Paulding, Van Wert, Mercer, Darke, Preble and Butler.
Williams, Fulton and Lucas.
Off Port Clinton in Ottawa County.
I-71, shown as a thin road-light line.
I-80/90, the Ohio Turnpike.
I-70.
I-75.
The Great Miami River, through Miami, Shelby and Montgomery counties.
Between Cleveland and Akron in Cuyahoga and Summit counties.
Hocking County, seat Logan.
Holmes County, seat Millersburg.
Wood County.
Hancock County.
Muskingum County.
Washington County.
Pickaway County.
No. Printing or copying maps from this site is not permitted.
Ashtabula County, at about 702 square miles.
Lake County, at about 228 square miles.
Franklin County, home to Columbus, with roughly 1.36 million residents.
Vinton County, with roughly 12,645 residents.
Columbus, in Franklin County, with about 938,396 residents.
Washington County, established in 1788 around the pioneer settlement at Marietta.
No. ZIP codes cross county lines, so use the county boundaries and seats shown here instead.
Physical Map of Ohio
Physical map and map image of Ohio.
Regional Directory of Canada
Information and guide about Canada and website listing.
Regional Directory of United States of America
Information and guide about United States of America and websites with American topics.
Regional Directory of Europe
Information and guide about Europe and websites with European topics.
Regional Directory of Australia
Information and guide about Australia and websites with Australian topics.
