

Description: Detailed large map of Pennsylvania State, USA showing cities, towns, county formations, roads highway, US highways and State routes.
Use this detailed map of Pennsylvania to explore the state's 67 counties, their administrative capitals (county seats), and key cities from Philadelphia and Pittsburgh to Erie, Allentown, Scranton, and Harrisburg. This is a county-first, road-light guide. Counties and seats are foregrounded for easy reading. Only a few clean highway cues are included to help you orient without clutter.
Borders and waters: Ohio to the west, West Virginia on the southwest, Maryland on the south, Delaware at the southeast corner, New Jersey across the Delaware River to the east, New York to the north, and Lake Erie on the northwest edge connecting to Canada by water.
Road-light cues: I-79 from Lake Erie to Pittsburgh, then south, I-80 across the northern tier, I-76 the PA Turnpike across the south-central belt, I-99 through Altoona, I-81 in the east, I-83 York to Harrisburg, I-95 in the far southeast. These are mentioned for orientation only.
Erie County – seat Erie. The map shows the port city of Erie on Lake Erie with North East, Girard, and Edinboro nearby. The county borders New York to the northeast and Ohio by water to the west.
Crawford County – seat Meadville. Meadville sits south of French Creek. Titusville appears in the northeast, where oil history began. Neighboring Erie, Warren, Venango, and Mercer frame the county.
Warren County – seat Warren. The Allegheny River and Kinzua Reservoir are visual anchors. Russell and Youngsville appear close to the river valley. North is New York.
McKean County – seat, Smethport. Rugged plateau country with Bradford and Kane labeled. Borders New York on the north and meets Elk and Potter south and east.
Venango County – seat, Franklin. Oil City and Franklin anchor the Allegheny Valley. The county touches Crawford, Warren, Forest, Clarion, Butler, and Mercer.
Forest County – seat Tionesta. Heavily forested lands with Tionesta and Marienville shown. Warren, Elk, Jefferson, and Venango surround the county.
Mercer County – seat Mercer. Towns Sharon, Hermitage, and Grove City are mapped along the Ohio line and the I-80 corridor. The county borders Ohio to the west.
Lawrence County – seat, New Castle. The Connoquenessing and Shenango valleys meet here. Ellwood City lies near the Beaver line. The map places New Castle near Pittsburgh's outer belt.
Butler County – seat Butler. Cranberry Township, Zelienople, and Mars mark the Pittsburgh metro edge. Slippery Rock and Saxonburg appear inland.
Clarion County – seat Clarion. Clarion, New Bethlehem, and Rimersburg lie along river terraces. The county sits north of Armstrong and east of Venango.
Jefferson County – seat, Brookville. Punxsutawney, Reynoldsville, and Brockway are marked along the upper Allegheny and Redbank valleys.
Elk County – seat, Ridgway. St. Mary's and Johnsonburg appear among high forest plateaus. Borders, Cameron, and McKean.
Cameron County – seat, Emporium. One of the smallest by population. Emporium is central to the Sinnemahoning Valley as the orientation thread.
Potter County – seat Coudersport. The map shows Coudersport and Ulysses near the Northern Tier with New York along the top line. Known for dark skies and headwaters.
Tioga County – seat Wellsboro. Wellsboro, Mansfield, and Blossburg are labeled with the Pine Creek Gorge corridor hinted at by river lines.
Bradford County – seat, Towanda. Sayre, Athens, and Troy line the New York boundary, and Susquehanna bends.
Susquehanna County – seat Montrose. Hallstead, Great Bend, and Forest City show across the New York line's river arc.
Wyoming County – seat, Tunkhannock. The Susquehanna River sweeps south of Tunkhannock. Meshoppen and Factoryville appear near the county edges.
Sullivan County – seat Laporte. A small, highland county between Bradford, Lycoming, and Columbia, with Dushore mapped.
Lycoming County – seat, Williamsport. Williamsport and Montoursville stand out on the West Branch Susquehanna, with Jersey Shore, Hughesville, and Muncy also labeled. The county meets Tioga, Bradford, Sullivan, Union, and Clinton.
Clinton County – seat Lock Haven. Lock Haven and Mill Hall lie along the river, with Renovo upstream. Borders Centre and Lycoming.
Allegheny County – seat Pittsburgh. The three rivers junction is the visual center. Suburban nodes like McKeesport, Penn Hills, Bethel Park, Monroeville, and Ross fill the ring within the county boundary.
Beaver County – seat: Beaver. Aliquippa, Ambridge, and Monaca lie along the Ohio River northwest of Pittsburgh. Borders, Ohio, via river approach.
Washington County – seat Washington. Canonsburg, Monongahela, California, and Charleroi dot the Monongahela valley and rolling hills. Borders West Virginia to the south.
Greene County – seat Waynesburg. The southernmost county on this flank is meeting West Virginia. Waynesburg is centrally located among rural communities.
Fayette County – seat Uniontown. Connellsville and Brownsville show along the Youghiogheny and Monongahela corridors. The county borders Maryland and West Virginia.
Westmoreland County – seat, Greensburg. New Kensington, Latrobe, Jeannette, Murrysville, and Arnold appear east of Pittsburgh.
Armstrong County – seat Kittanning. The Allegheny curves around Kittanning and Ford City, with Leechburg along the border with Westmoreland.
Indiana County – seat of Indiana. Blairsville, Homer City, and Punxsutawney, nearby on the Jefferson line, define the interior grid.
Somerset County – seat Somerset. The Laurel Highlands crest stands south of Cambria. Meyersdale and Berlin appear near the Maryland line. The turnpike corridor crosses lightly.
Cambria County – seat Ebensburg. The map shows Johnstown prominently with Westmont, Nanty Glo, and Carrolltown across the uplands.
Bedford County – seat Bedford. A turnpike valley county with Everett, Saxton, and Hyndman near Maryland.
Blair County – seat, Hollidaysburg. Altoona dominates the map label with Tyrone to the north and Bellwood nearby. I-99 is a simple north-south cue.
Huntingdon County – seat Huntingdon. Mount Union, Petersburg, and Three Springs appear along the Juniata valleys and Raystown Lake.
Fulton County – seat, McConnellsburg. A narrow south-central county between Bedford and Franklin at the Maryland line.
Franklin County – seat Chambersburg. Greencastle, Waynesboro, and Shippensburg mark the Cumberland Valley transitioning toward Cumberland County and Harrisburg.
Clearfield County – seat: Clearfield. DuBois, Philipsburg on the Centre edge, and Curwensville are mapped. I-80 crosses the northern townships.
Centre County – seat, Bellefonte. State College appears prominently with Penn State University. Philipsburg, Milesburg, and Snow Shoe complete the ring. The county sits between Mifflin, Clinton, and Clearfield.
Mifflin County – seat Lewistown. Lewistown, along the Juniata River, is the hub with Burnham and Reedsville shown nearby.
Juniata County – seat, Mifflintown. A small valley county west of the Susquehanna, paired with Perry and Mifflin.
Perry County – seat New Bloomfield. Northwest of Harrisburg, with Marysville, Duncannon, and Newport along the river corridor.
Cumberland County – seat Carlisle. Mechanicsburg, Camp Hill, and Shippensburg appear in the valley west of the Susquehanna. The county directly neighbors Dauphin across the river.
Dauphin County – seat Harrisburg. The state capital, Harrisburg, sits on the east bank of the Susquehanna. Hummelstown, Middletown, and Hershey are mapped southeast toward Lebanon and Lancaster.
Northumberland County – seat Sunbury. Sunbury and Shamokin are the major labels with the confluence at Northumberland near Union.
Union County – seat Lewisburg. Lewisburg and Mifflinburg sit along the West Branch Susquehanna, with New Berlin as a small seat in history.
Snyder County – seat Middleburg. A small county on the north side of Juniata with Selinsgrove along the river.
Montour County – seat Danville. One of the smallest by land area. Danville is along the North Branch Susquehanna, between Columbia and Northumberland.
Columbia County – seat Bloomsburg. Bloomsburg is the only incorporated town seat in Pennsylvania. Berwick and Catawissa appear on the river.
Luzerne County – seat Wilkes-Barre. The map highlights Wilkes-Barre, Hazleton, Nanticoke, Pittston, and Kingston in the Wyoming Valley. The county neighbors Lackawanna to the north.
Lackawanna County – seat Scranton. Scranton, Dunmore, and Carbondale form the core. The county sits between Susquehanna, Wayne, and Luzerne.
Wayne County – seat Honesdale. A border county with New York across the Delaware River. Hawley and the lake region are shown.
Pike County – seat, Milford. The northeast corner touches New York and New Jersey, with Matamoras at the tri-state bridge.
Monroe County – seat Stroudsburg. East Stroudsburg, Mount Pocono, and resort communities line the I-80 corridor toward New Jersey.
Carbon County – seat, Jim Thorpe. Lehighton, Palmerton, and Weatherly appear along the Lehigh and Nesquehoning valleys.
Northampton County – seat Easton. Bethlehem (shared with Lehigh), Nazareth, and Bangor are mapped at the New Jersey line.
Lehigh County – seat, Allentown. The Lehigh Valley is anchored by Allentown, Bethlehem (part), Emmaus, and Whitehall. The county lies west of Northampton.
Schuylkill County – seat, Pottsville. Tamaqua, Schuylkill Haven, and Mahanoy City show in the anthracite ridge and valley belt.
Berks County – seat Reading. Reading dominates with Wyomissing, Kutztown, and Boyertown nearby. Borders Lancaster, Lebanon, Chester, and Montgomery.
Lebanon County – seat Lebanon. Palmyra, Annville, and Myerstown appear between Dauphin and Berks.
Lancaster County – seat Lancaster. Ephrata, Lititz, Manheim, Elizabethtown, New Holland, and Strasburg fill the farmland grid. The county borders York to the west and Chester to the east.
York County – seat York. Hanover, Red Lion, Dillsburg, and Shrewsbury lie between Maryland and the Susquehanna. I-83 is a light cue north to Harrisburg.
Adams County – seat Gettysburg. Gettysburg and Littlestown are labeled near the Maryland border. The battlefield landscape is evident around the seat.
Chester County – seat, West Chester. Coatesville, Downingtown, Phoenixville, Kennett Square, and Oxford appear. The county links Lancaster, Berks, Montgomery, Delaware, and Maryland.
Montgomery County – seat Norristown. King of Prussia, Lansdale, Pottstown, Abington, and Blue Bell ring the northwest side of Philadelphia.
Delaware County – seat Media. Upper Darby, Chester, Haverford, and Radnor appear along the Delaware River and Main Line.
Philadelphia County – seat Philadelphia. A county and city in one. The map shows Center City, Northeast, West Philadelphia, South Philadelphia, and the riverfront toward New Jersey.
Bucks County – seat Doylestown. Bensalem, Levittown, Quakertown, Newtown, and Morrisville line the Delaware River arc to the northeast of Philadelphia.
North-central and anthracite counties already covered include Columbia and Montour; south-central ring includes Lebanon, Lancaster, York, and Adams; the ridge and valley sweep includes Perry, Cumberland, Dauphin, Northumberland, Union, Snyder, Juniata, Mifflin, Huntingdon, Franklin, Fulton, and Bedford. Together, they create a continuous mosaic visible on our map.
For quick reference, each county seat is labeled on the map:
Adams Gettysburg; Allegheny Pittsburgh; Armstrong Kittanning; Beaver Beaver; Bedford Bedford; Berks Reading; Blair Hollidaysburg; Bradford Towanda; Bucks Doylestown; Butler Butler; Cambria Ebensburg; Cameron Emporium; Carbon Jim Thorpe; Centre Bellefonte; Chester West Chester; Clarion Clarion; Clearfield Clearfield; Clinton Lock Haven; Columbia Bloomsburg; Crawford Meadville; Cumberland Carlisle; Dauphin Harrisburg; Delaware Media; Elk Ridgway; Erie Erie; Fayette Uniontown; Forest Tionesta; Franklin Chambersburg; Fulton McConnellsburg; Greene Waynesburg; Huntingdon Huntingdon; Indiana Indiana; Jefferson Brookville; Juniata Mifflintown; Lackawanna Scranton; Lancaster Lancaster; Lawrence New Castle; Lebanon Lebanon; Lehigh Allentown; Luzerne Wilkes-Barre; Lycoming Williamsport; McKean Smethport; Mercer Mercer; Mifflin Lewistown; Monroe Stroudsburg; Montgomery Norristown; Montour Danville; Northampton Easton; Northumberland Sunbury; Perry New Bloomfield; Philadelphia Philadelphia; Pike Milford; Potter Coudersport; Schuylkill Pottsville; Snyder Middleburg; Somerset Somerset; Sullivan Laporte; Susquehanna Montrose; Tioga Wellsboro; Union Lewisburg; Venango Franklin; Warren Warren; Washington Washington; Wayne Honesdale; Westmoreland Greensburg; Wyoming Tunkhannock; York York.
Physical Map of Pennsylvania
Physical map and map image of Pennsylvania.
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