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Pennsylvania County Map with Towns and Roads

Detailed large map of Pennsylvania State, USA showing cities, towns, county formations, roads highway, US highways and State routes.
Detailed large map of Pennsylvania State, USA showing cities, towns, county formations, roads highway, US highways and State routes.

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Description: Detailed large map of Pennsylvania State, USA showing cities, towns, county formations, roads highway, US highways and State routes.


Map of Pennsylvania (USA). Pennsylvania map with cities, counties, and towns. Use this detailed map to understand Pennsylvania'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.

Large Detailed Map of Pennsylvania Showing Cities, Towns, and Counties with Roads Outlines

Map of Pennsylvania (USA). This detailed county map shows every county, its county seat, and the major cities across the state, with a light road layer added purely for orientation. Whether you're tracing county lines around Philadelphia or working your way west toward Pittsburgh, every county here is shaded and clearly labeled, with major cities marked so you can find your bearings fast.

Map of Pennsylvania Overview

Borders and waters at a glance: Follow the outline and you will find New York running along the north edge, New Jersey sitting across the Delaware River to the east, a short stretch of Delaware touching the southeast corner, Maryland running the length of the south edge, West Virginia meeting the southwest corner, Ohio lining the west edge, and Lake Erie forming the short northwest shoreline that connects out to Canada by water. All 67 counties sit inside that outline, and three rivers do most of the internal orientation work on the map: the Susquehanna, the Delaware, and the Allegheny.

Road-light orientation: This is a county-first map, so the highway layer is kept deliberately light. A handful of corridor cues – I-79, I-80, I-76, I-81, I-83, I-95, and I-99 – are enough to place the state's big metro anchors: Philadelphia in the southeast, Pittsburgh where three rivers meet in Allegheny County, and the state capital, Harrisburg, on the Susquehanna in Dauphin County.

Pennsylvania, County by County

Northwest Pennsylvania and the Lake Erie corner

Start at the Lake Erie shoreline. Erie County lists Erie as its seat, a port city on Lake Erie with North East, Girard, and Edinboro nearby, bordering New York to the northeast and Ohio by water to the west. South of the lake, Crawford County shows Meadville on French Creek, with Titusville in the northeast marking where the American oil industry began. Warren County, seat Warren, sits along the Allegheny River and Kinzua Reservoir, with Russell and Youngsville nearby and New York on its north edge. Mercer County lists Mercer as its seat, with Sharon, Hermitage, and Grove City strung along the Ohio line and the I-80 corridor. Venango County shows Franklin as the seat, anchored by Oil City along the Allegheny Valley, bordering Crawford, Warren, Forest, Clarion, Butler, and Mercer counties. Forest County, seat Tionesta, is the most heavily forested county on the map, with Marienville also shown. Clarion County lists Clarion as its seat, with New Bethlehem and Rimersburg along river terraces north of Armstrong County. Butler County, seat Butler, reaches into the Pittsburgh metro edge with Cranberry Township, Zelienople, Mars, and Slippery Rock labeled. Lawrence County lists New Castle as its seat, where the Connoquenessing and Shenango valleys meet, with Ellwood City near the Beaver County line.

Allegheny Plateau and the Northern Tier

East of the lake corner, plateau country opens up. McKean County, seat Smethport, shows Bradford and Kane on rugged tableland along the New York line. Elk County lists Ridgway as its seat, with St. Marys and Johnsonburg set among high forest plateaus next to Cameron and McKean counties. Cameron County, seat Emporium, is the least populous county in the state, centered on the Sinnemahoning Valley. Jefferson County lists Brookville as its seat, with Punxsutawney, Reynoldsville, and Brockway along the upper Allegheny and Redbank valleys. Potter County shows Coudersport and Ulysses near the Northern Tier, known for dark skies and river headwaters. Tioga County, seat Wellsboro, labels Mansfield and Blossburg near the Pine Creek Gorge. Bradford County lists Towanda as its seat, with Sayre, Athens, and Troy lined along the New York border and the Susquehanna bends. Susquehanna County, seat Montrose, shows Hallstead, Great Bend, and Forest City across the northeastern river arc. Wyoming County lists Tunkhannock as its seat, where the Susquehanna River sweeps south past Meshoppen and Factoryville. Sullivan County, a small highland county, lists Laporte as its seat between Bradford, Lycoming, and Columbia counties. Lycoming County, seat Williamsport, is the largest county in Pennsylvania by land area, with Montoursville, Jersey Shore, Hughesville, and Muncy also labeled along the West Branch Susquehanna. Clinton County lists Lock Haven as its seat, with Mill Hall along the river and Renovo upstream.

Greater Pittsburgh and the Southwest

Allegheny County lists Pittsburgh as its seat at the three-rivers junction, where the Allegheny and Monongahela meet to form the Ohio, with McKeesport, Penn Hills, Bethel Park, and Monroeville filling the ring of suburbs. Beaver County, seat Beaver, shows Aliquippa, Ambridge, and Monaca along the Ohio River northwest of the city, reaching toward the Ohio state line by river approach. Washington County lists Washington as its seat, with Canonsburg, Monongahela, and Charleroi across the Monongahela valley, bordering West Virginia to the south. Greene County, seat Waynesburg, is the southernmost county on this flank, also meeting West Virginia. Fayette County lists Uniontown as its seat, with Connellsville and Brownsville along the Youghiogheny and Monongahela corridors, bordering both Maryland and West Virginia. Westmoreland County shows Greensburg as its seat, with New Kensington, Latrobe, and Jeannette spread east of Pittsburgh. Armstrong County, seat Kittanning, follows the Allegheny River past Ford City and Leechburg. Indiana County lists Indiana as its seat, with Blairsville and Homer City defining the interior grid next to Jefferson County.

Laurel Highlands and the Alleghenies

South and east of Pittsburgh, the Laurel Highlands rise. Somerset County, seat Somerset, sits along the Laurel Highlands crest south of Cambria County, with Meyersdale and Berlin near the Maryland line and the Pennsylvania Turnpike crossing lightly. Cambria County lists Ebensburg as its seat, with Johnstown the dominant city, plus Westmont and Nanty Glo across the uplands. Bedford County, seat Bedford, is a turnpike valley county with Everett, Saxton, and Hyndman near Maryland. Blair County shows Hollidaysburg as its seat, with Altoona the map's dominant label and Tyrone to the north along the I-99 corridor. Huntingdon County lists Huntingdon as its seat, with Mount Union and Three Springs along the Juniata valleys and Raystown Lake. Fulton County, seat McConnellsburg, is a narrow south-central county between Bedford and Franklin counties at the Maryland line. Franklin County shows Chambersburg as its seat, with Greencastle, Waynesboro, and Shippensburg marking the Cumberland Valley toward Harrisburg. Clearfield County, seat Clearfield, lists DuBois, Philipsburg, and Curwensville, with I-80 crossing the northern townships. Centre County shows Bellefonte as its seat, with State College and Penn State University the prominent label between Mifflin, Clinton, and Clearfield counties.

Susquehanna Valley and the Capital Region

Mifflin County, seat Lewistown, follows the Juniata River, with Burnham and Reedsville nearby. Juniata County lists Mifflintown as its seat, a small valley county paired with Perry and Mifflin counties. Perry County, seat New Bloomfield, sits northwest of Harrisburg with Marysville, Duncannon, and Newport along the river. Cumberland County shows Carlisle as its seat, with Mechanicsburg and Camp Hill in the valley west of the Susquehanna, directly across from Dauphin County. Dauphin County lists Harrisburg, the state capital, as its seat on the east bank of the Susquehanna, with Hummelstown, Middletown, and Hershey mapped southeast toward Lebanon and Lancaster. Northumberland County, seat Sunbury, shows Shamokin and the river confluence near Union County. Union County lists Lewisburg as its seat, with Mifflinburg along the West Branch Susquehanna. Snyder County, seat Middleburg, is a small county on the north side of Juniata County with Selinsgrove on the river. Montour County, the smallest county in Pennsylvania by land area, lists Danville as its seat along the North Branch Susquehanna between Columbia and Northumberland counties. Columbia County shows Bloomsburg as its seat, the only incorporated town seat in the state, with Berwick and Catawissa on the river. Luzerne County, seat Wilkes-Barre, highlights Hazleton, Nanticoke, Pittston, and Kingston in the Wyoming Valley, bordering Lackawanna County to the north.

The Northeast and the Poconos

Lackawanna County lists Scranton as its seat, with Dunmore and Carbondale forming the core between Susquehanna, Wayne, and Luzerne counties. Wayne County, seat Honesdale, borders New York across the Delaware River, with Hawley and the lake region shown. Pike County shows Milford as its seat, in the far northeast corner touching both New York and New Jersey, with Matamoras at the tri-state bridge. Monroe County, seat Stroudsburg, lists East Stroudsburg and Mount Pocono along the I-80 corridor toward New Jersey. Carbon County, seat Jim Thorpe, shows Lehighton, Palmerton, and Weatherly along the Lehigh and Nesquehoning valleys.

Lehigh Valley and the Anthracite Region

Northampton County lists Easton as its seat, with part of Bethlehem and Nazareth mapped at the New Jersey line. Lehigh County, seat Allentown, anchors the Lehigh Valley with Emmaus and Whitehall just west of Northampton County. Schuylkill County shows Pottsville as its seat, with Tamaqua and Mahanoy City in the anthracite ridge and valley belt. Berks County lists Reading as its seat, with Wyomissing, Kutztown, and Boyertown nearby, bordering Lancaster, Lebanon, Chester, and Montgomery counties. Lebanon County, seat Lebanon, shows Palmyra, Annville, and Myerstown between Dauphin and Berks counties.

South Central and the Susquehanna farmland

Lancaster County lists Lancaster as its seat, with Ephrata, Lititz, Manheim, and Strasburg filling the Amish Country farmland grid, bordering York County to the west and Chester County to the east. York County, seat York, shows Hanover, Red Lion, and Dillsburg between Maryland and the Susquehanna, with I-83 running north to Harrisburg. Adams County lists Gettysburg as its seat, with Littlestown near the Maryland border and the Civil War battlefield surrounding the seat. Chester County, seat West Chester, shows Coatesville, Downingtown, Phoenixville, and Kennett Square, linking Lancaster, Berks, Montgomery, Delaware, and Maryland.

Greater Philadelphia

Montgomery County lists Norristown as its seat, with King of Prussia, Lansdale, and Pottstown ringing the northwest side of Philadelphia. Delaware County, seat Media, shows Upper Darby, Chester, and Haverford along the Delaware River and the Main Line, and is the only Pennsylvania county that touches the state of Delaware. Philadelphia County is a county and a city in one, with Center City, West Philadelphia, and South Philadelphia labeled along the riverfront toward New Jersey. Bucks County, seat Doylestown, lists Bensalem, Levittown, and Quakertown lining the Delaware River arc northeast of Philadelphia.

How to read the page for practical questions

Because every county block is colored and every county seat is printed in a consistent symbol, the eye can answer everyday questions quickly: Which county is Reading in? Berks. Where does Pittsburgh sit? Allegheny at the three rivers. Which seat serves Gettysburg and the battlefield? Adams. What is the seat in the far northeast corner? Milford in Pike. Where is State College relative to Bellefonte? Both sit inside Centre County. Where is Lancaster's Amish Country? Centered on Lancaster County between York and Chester. That is the power of this detailed map for both residents and visitors: counties first, with just enough network to anchor direction.

Rivers and orientation recap

Three rivers do most of the orientation work on this page. The Susquehanna River cuts diagonally from the New York line through Sunbury and Harrisburg toward Maryland, splitting into a West Branch that passes Williamsport and Lock Haven. The Delaware River traces the entire eastern border from Wayne County down through Easton, Philadelphia, and Bucks and Delaware counties. The Ohio River forms at Pittsburgh where the Allegheny and Monongahela rivers meet, then exits the state at Beaver County. Keep these three in mind and any county on the map is easy to place.

Road-light snapshot

The road layer is intentionally minimal. I-79 runs from Lake Erie south through Pittsburgh. I-80 crosses the northern tier corner to corner. I-76, the Pennsylvania Turnpike, runs the south-central belt from Ohio to Philadelphia. I-81 runs the eastern ridge-and-valley corridor from Maryland to New York. I-83 connects York to Harrisburg, and I-95 runs the far southeast corner through Philadelphia and Bucks County. I-99 serves the Altoona area. None of these are meant for turn-by-turn navigation, only as county-placement cues.

Complete county and seat index

Every one of Pennsylvania's 67 counties and its seat, in alphabetical order: Adams County (Gettysburg), Allegheny County (Pittsburgh), Armstrong County (Kittanning), Beaver County (Beaver), Bedford County (Bedford), Berks County (Reading), Blair County (Hollidaysburg), Bradford County (Towanda), Bucks County (Doylestown), Butler County (Butler), Cambria County (Ebensburg), Cameron County (Emporium), Carbon County (Jim Thorpe), Centre County (Bellefonte), Chester County (West Chester), Clarion County (Clarion), Clearfield County (Clearfield), Clinton County (Lock Haven), Columbia County (Bloomsburg), Crawford County (Meadville), Cumberland County (Carlisle), Dauphin County (Harrisburg), Delaware County (Media), Elk County (Ridgway), Erie County (Erie), Fayette County (Uniontown), Forest County (Tionesta), Franklin County (Chambersburg), Fulton County (McConnellsburg), Greene County (Waynesburg), Huntingdon County (Huntingdon), Indiana County (Indiana), Jefferson County (Brookville), Juniata County (Mifflintown), Lackawanna County (Scranton), Lancaster County (Lancaster), Lawrence County (New Castle), Lebanon County (Lebanon), Lehigh County (Allentown), Luzerne County (Wilkes-Barre), Lycoming County (Williamsport), McKean County (Smethport), Mercer County (Mercer), Mifflin County (Lewistown), Monroe County (Stroudsburg), Montgomery County (Norristown), Montour County (Danville), Northampton County (Easton), Northumberland County (Sunbury), Perry County (New Bloomfield), Philadelphia County (Philadelphia), Pike County (Milford), Potter County (Coudersport), Schuylkill County (Pottsville), Snyder County (Middleburg), Somerset County (Somerset), Sullivan County (Laporte), Susquehanna County (Montrose), Tioga County (Wellsboro), Union County (Lewisburg), Venango County (Franklin), Warren County (Warren), Washington County (Washington), Wayne County (Honesdale), Westmoreland County (Greensburg), Wyoming County (Tunkhannock), and York County (York).

A county-by-county directory that matches the labels on the map

Use this as a quick index. Every line lists the county with its county seat and a short cue for river, border, or corridor context only.

Northwest Pennsylvania and the Lake Erie corner

  • Erie – Erie; Lake Erie port city.

  • Crawford – Meadville; French Creek valley.

  • Warren – Warren; Allegheny River and Kinzua Reservoir.

  • Mercer – Mercer; Sharon and Hermitage on the Ohio line.

  • Venango – Franklin; Oil City on the Allegheny.

  • Forest – Tionesta; the most forested county on the map.

  • Clarion – Clarion; river terrace towns north of Armstrong.

  • Butler – Butler; Cranberry Township at the Pittsburgh metro edge.

  • Lawrence – New Castle; Connoquenessing and Shenango valleys.

Allegheny Plateau and the Northern Tier

  • McKean – Smethport; Bradford and Kane on the plateau.

  • Elk – Ridgway; St. Marys among high forest.

  • Cameron – Emporium; Sinnemahoning Valley, least populous county.

  • Jefferson – Brookville; Punxsutawney nearby.

  • Potter – Coudersport; dark-sky Northern Tier headwaters.

  • Tioga – Wellsboro; Pine Creek Gorge.

  • Bradford – Towanda; Sayre and Athens on the New York line.

  • Susquehanna – Montrose; Hallstead and Great Bend.

  • Wyoming – Tunkhannock; Susquehanna River sweep.

  • Sullivan – Laporte; small highland county.

  • Lycoming – Williamsport; largest county in Pennsylvania by area.

  • Clinton – Lock Haven; Mill Hall and Renovo.

Greater Pittsburgh and the Southwest

  • Allegheny – Pittsburgh; three-rivers junction.

  • Beaver – Beaver; Aliquippa and Ambridge on the Ohio.

  • Washington – Washington; Monongahela valley, borders West Virginia.

  • Greene – Waynesburg; southernmost county, borders West Virginia.

  • Fayette – Uniontown; Connellsville, borders Maryland and West Virginia.

  • Westmoreland – Greensburg; Latrobe and Jeannette east of Pittsburgh.

  • Armstrong – Kittanning; Allegheny River bend.

  • Indiana – Indiana; Blairsville and Homer City.

Laurel Highlands and the Alleghenies

  • Somerset – Somerset; Laurel Highlands crest near Maryland.

  • Cambria – Ebensburg; Johnstown is the major city.

  • Bedford – Bedford; turnpike valley near Maryland.

  • Blair – Hollidaysburg; Altoona is the major city.

  • Huntingdon – Huntingdon; Juniata valleys and Raystown Lake.

  • Fulton – McConnellsburg; narrow county at the Maryland line.

  • Franklin – Chambersburg; Cumberland Valley toward Harrisburg.

  • Clearfield – Clearfield; DuBois and Philipsburg on I-80.

  • Centre – Bellefonte; State College and Penn State.

Susquehanna Valley and the Capital Region

  • Mifflin – Lewistown; Juniata River hub.

  • Juniata – Mifflintown; small valley county.

  • Perry – New Bloomfield; northwest of Harrisburg.

  • Cumberland – Carlisle; valley west of the Susquehanna.

  • Dauphin – Harrisburg; the state capital.

  • Northumberland – Sunbury; river confluence.

  • Union – Lewisburg; West Branch Susquehanna.

  • Snyder – Middleburg; Selinsgrove on the river.

  • Montour – Danville; smallest county in Pennsylvania by area.

  • Columbia – Bloomsburg; only incorporated town seat in the state.

  • Luzerne – Wilkes-Barre; Wyoming Valley hub.

The Northeast and the Poconos

  • Lackawanna – Scranton; Dunmore and Carbondale.

  • Wayne – Honesdale; New York border on the Delaware.

  • Pike – Milford; tri-state corner with New York and New Jersey.

  • Monroe – Stroudsburg; Pocono resort country on I-80.

  • Carbon – Jim Thorpe; Lehigh River valley.

Lehigh Valley and the Anthracite Region

  • Northampton – Easton; New Jersey line.

  • Lehigh – Allentown; Lehigh Valley anchor.

  • Schuylkill – Pottsville; anthracite ridge and valley belt.

  • Berks – Reading; Wyomissing and Kutztown.

  • Lebanon – Lebanon; Palmyra and Annville.

South Central and the Susquehanna farmland

  • Lancaster – Lancaster; Amish Country farmland.

  • York – York; Susquehanna River and I-83 to Harrisburg.

  • Adams – Gettysburg; Civil War battlefield.

  • Chester – West Chester; Coatesville and Kennett Square.

Greater Philadelphia

  • Montgomery – Norristown; King of Prussia ring.

  • Delaware – Media; only county touching Delaware state.

  • Philadelphia – Philadelphia; consolidated city-county.

  • Bucks – Doylestown; Delaware River arc.

This directory aligns with what you see on the page: every county, its seat, and a one-line locator that keeps the focus on counties rather than driving steps.

Pennsylvania at a glance

Pennsylvania borders New York to the north, New Jersey across the Delaware River to the east, Delaware at the southeast corner (only Delaware County touches it), Maryland to the south, West Virginia to the southwest, Ohio to the west, and Lake Erie on the northwest edge connecting to Canada by water. The state holds 67 counties. Lycoming County is the largest by land area at about 1,244 square miles, while Montour County is the smallest at about 132 square miles. Philadelphia County, coterminous with the city of Philadelphia, is the most populous county with roughly 1.57 million residents, while Cameron County is the least populous at roughly 4,300 residents. Philadelphia, Bucks, and Chester counties share the title of oldest county, all three original counties William Penn established in 1682. Pennsylvania covers about 46,054 square miles in total, with roughly 44,743 square miles of land. The capital, Harrisburg, sits in Dauphin County on the Susquehanna River, and the state's major metros run from Philadelphia and its suburbs through the Lehigh Valley and Scranton-Wilkes-Barre in the east to Pittsburgh in the west. Landscape-wise, the state moves from the Allegheny Plateau and Pittsburgh's river valleys in the west, through the Ridge and Valley Appalachians and the Laurel Highlands in the center, to the rolling Piedmont farmland near Philadelphia in the east.

People, economy, and activity

Pennsylvania's ten largest cities by current population are Philadelphia (about 1,573,916, Philadelphia County), Pittsburgh (about 307,668, Allegheny County), Allentown (about 124,880, Lehigh County), Reading (about 94,903, Berks County), Erie (about 92,957, Erie County), Bethlehem (about 78,300, mainly Northampton County), Scranton (about 75,805, Lackawanna County), Lancaster (about 57,153, Lancaster County), Harrisburg (about 50,012, Dauphin County), and York (about 44,867, York County). Philadelphia anchors the state's healthcare, education, and finance sectors and remains a major East Coast port on the Delaware River. Pittsburgh has rebuilt its former steel-town economy around healthcare systems like UPMC, robotics, and technology research tied to Carnegie Mellon University and the University of Pittsburgh. The Lehigh Valley around Allentown and Bethlehem has grown into a logistics and distribution hub, while Scranton and Wilkes-Barre anchor the old anthracite coal region in the northeast. Agriculture remains central to Lancaster County and the surrounding Amish Country, among the most productive non-irrigated farm regions in the country, and the Philadelphia region's deep-water access on the Delaware River supports one of the busiest freshwater ports on the East Coast.

Culture and heritage

Pennsylvania's cultural identity runs from colonial Philadelphia to the steel towns of the west. Independence Hall and the Liberty Bell, both in Philadelphia, mark the birthplace of the Declaration of Independence and the U.S. Constitution, and nearby Valley Forge in Montgomery and Chester counties preserves George Washington's Revolutionary War winter encampment. Gettysburg, seat of Adams County, holds the Civil War battlefield and national cemetery. Lancaster County anchors the state's Amish Country, drawing visitors to Amish farms, covered bridges, and the towns of Intercourse and Bird-in-Hand. Pittsburgh's steel heritage lives on in its museums and in the Carnegie name, tied to steel magnate Andrew Carnegie, while the old Bethlehem Steel plant in Northampton County has been reborn as the ArtsQuest and SteelStacks campus. Higher education is spread widely across the state's counties, including the University of Pennsylvania and Temple University in Philadelphia, the University of Pittsburgh and Carnegie Mellon University in Allegheny County, Penn State University in Centre County, and Lehigh University in Northampton County.

Physical geography (quick orientation)

On this map, Mount Davis (Laurel Highlands, Somerset County) and the Susquehanna, Delaware, and Allegheny rivers double as landmarks for finding counties quickly. For elevation, terrain, watersheds, and land-cover detail, see our Physical Map of Pennsylvania.

Climate (quick note)

Pennsylvania has a humid continental climate in the north and a milder humid subtropical transition near Philadelphia, with cold, snowier winters across the Allegheny Plateau. For a full seasonal and biome breakdown, see our Physical Map of Pennsylvania.

Getting around (map-aligned)

North-south travel runs mainly on I-79 (Erie to Pittsburgh to West Virginia), I-81 (the Maryland line through the ridge-and-valley corridor to New York), and I-95 (Philadelphia and Bucks County along the Delaware River). East-west travel runs on I-80 (the northern tier corner to corner) and I-76, the Pennsylvania Turnpike (Ohio to Philadelphia through the south-central belt), with I-83 linking York to Harrisburg and I-99 serving the Altoona area. Keep in mind that ZIP codes do not follow county lines in Pennsylvania, 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.

Frequently Asked Questions about the Pennsylvania County Map

There are 67 counties, each color-shaded and labeled with the county seat.

Lake Erie to the northwest, New York to the north, New Jersey to the east, Delaware at the southeast corner, Maryland to the south, West Virginia to the southwest, and Ohio to the west.

Philadelphia appears in the southeast as a combined city-county. Pittsburgh sits at the three-rivers junction in Allegheny County.

Harrisburg in Dauphin County along the Susquehanna River.

Erie is the seat of Erie County on the Lake Erie shore.

Allegheny plus surrounding Beaver, Butler, Washington, Westmoreland, and parts of Lawrence.

Lehigh County with Allentown, and Northampton County with Easton and part of Bethlehem.

Scranton is the seat of Lackawanna County.

Wilkes-Barre is the seat of Luzerne County in the Wyoming Valley.

Allentown is the seat of Lehigh County.

Reading is the seat of Berks County.

Lancaster is the seat of Lancaster County.

York is the seat of York County.

Gettysburg is the seat of Adams County, just north of the Maryland line.

Monroe, Northampton, Bucks, Philadelphia and Delaware front the Delaware River to New Jersey, with Pike and Wayne in the northeast.

From west to east: Fayette, Somerset, Bedford, Fulton, Franklin, Adams, York, Lancaster, Chester.

Erie by lake approach, Crawford, Mercer, Lawrence, Beaver, and Washington.

Greene, Fayette, and Washington on the land line, with Beaver touching by river vicinity.

From west to east: Erie, Warren, McKean, Potter, Tioga, Bradford, Susquehanna, Wayne.

Delaware County, along the Twelve-Mile Circle boundary near Chester, the only Pennsylvania county that touches it.

The Susquehanna River.

I-76, I-79, I-80, I-81, I-83, I-95, and I-99, mentioned only for orientation.

State College is in Centre County near Bellefonte.

Johnstown is in Cambria County; Altoona is in Blair County.

Bethlehem spans Lehigh and Northampton, while Easton is the seat of Northampton County.

Pottsville is the seat of Schuylkill County.

Norristown.

Media.

Doylestown.

Lycoming County, at about 1,244 square miles.

Montour County, at about 132 square miles.

Philadelphia County, coterminous with the city, with roughly 1.57 million residents.

Cameron County, with roughly 4,300 residents.

Philadelphia, in Philadelphia County, with about 1.57 million residents.

Philadelphia, Bucks, and Chester counties, all established in 1682 by William Penn.

No. ZIP codes cross county lines, so use the county boundaries and seats shown here instead.

No. Printing or copying maps from this site is not permitted.

Zoom to the county name first, then the seat, using the Susquehanna and Delaware rivers and interstate numbers as anchors.

Physical Map of Pennsylvania
Physical map and map image of Pennsylvania.

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
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