Pennsylvania Counties Map

Found in the Northeastern United States, Pennsylvania is known for its important role in US history, Amish culture, Philly Cheesesteaks, and much more. It was one of the original 13 colonies of the United States and is home to the beautiful landscapes of the Pennsylvania Wilds.

Pennsylvania (PA) on the US Map

The State of Pennsylvania highlighted on the US map.
Pennsylvania on the US map

There are 67 counties in Pennsylvania, one of which is coterminous with the city of Philadelphia. Each of these counties has its own culture, history, and attractions. In this post, we’ll explore the unique identities of the Keystone State’s counties, starting with the Pennsylvania Counties Map below. It details the borders of all 67 counties and shows the major city in each.

Map of Pennsylvania Counties

Below is a map of the 67 counties of Pennsylvania (you can click on the map to enlarge it and to see the major city in each county).

A color-coded map showing the counties of Pennsylvania with labels for each county, adjacent state names, and major water bodies.
Pennsylvania counties map with cities

Interactive Map of Pennsylvania Counties

Click on any of the counties on the map to see its population, economic data, time zone, and zip code (the data will appear below the map). Data is sourced from the US Census 2021.

List of the Counties of Pennsylvania:

CountyPopulationPer sq. kmLargest City
Adams County103,78277.25Conewago
Allegheny County1,246,116659.12Pittsburgh
Armstrong County65,96738.99Kiskiminetas
Beaver County168,260149.45Hopewell
Bedford County47,72918.21Bedford
Berks County426,967192.49Reading
Blair County123,13290.51Altoona
Bradford County60,23320.27Sayre
Bucks County643,872411.34Bensalem
Butler County192,56194.17Cranberry
Cambria County134,04875.28Johnstown
Cameron County4,5964.48Shippen
Carbon County64,79265.6Penn Forest
Centre County158,87955.33State College
Chester County531,704273.52Tredyffrin
Clarion County37,57124.14Clarion
Clearfield County80,66727.19Sandy
Clinton County37,82416.45Lock Haven
Columbia County65,01351.95Bloomsburg
Crawford County84,49532.23Meadville
Cumberland County257,333182.15Hampden
Dauphin County284,199209.06Harrisburg
Delaware County573,8831205.46Upper Darby
Elk County31,03714.49St. Marys
Erie County271,903131.41Erie
Fayette County129,44363.2North Union
Forest County7,1216.44Jenks
Franklin County155,59277.79Chambersburg
Fulton County14,52912.82Ayr
Greene County36,24824.3Franklin
Huntingdon County44,45819.63Huntingdon
Indiana County83,62039.02White
Jefferson County44,49126.33Punxsutawney
Juniata County23,60723.29Fayette
Lackawanna County215,529181.34Scranton
Lancaster County550,480225.17Lancaster
Lawrence County86,31193.25New Castle
Lebanon County142,486152.04Lebanon
Lehigh County372,492416.47Allentown
Luzerne County324,825140.94Wilkes-Barre
Lycoming County114,27435.9Williamsport
McKean County40,65216.02Bradford
Mercer County111,21663.85Hermitage
Mifflin County46,15643.36Lewistown
Monroe County168,128106.7Coolbaugh
Montgomery County850,890680.23Pottstown
Montour County18,19853.95Mahoning
Northampton County311,359325.1Bethlehem
Northumberland County91,85377.49Coal
Perry County45,87932.12Carroll
Philadelphia County1,596,8654588.93Philadelphia
Pike County58,34541.34Dingman
Potter County16,4785.88Coudersport
Schuylkill County143,30871.07Pottsville
Snyder County39,87746.83Selinsgrove
Somerset County74,33126.7Conemaugh
Sullivan County5,9355.09Cherry
Susquehanna County38,89218.23Bridgewater
Tioga County41,08913.99Charleston
Union County43,09452.66East Buffalo
Venango County50,81029.1Oil City
Warren County38,79116.94Warren
Washington County209,09094.2Peters
Wayne County51,24427.26Lake
Westmoreland County355,107133.41Hempfield
Wyoming County26,38925.65Tunkhannock
York County454,605194.09York

Biggest Counties in Pennsylvania by Population

Philadelphia County

Aerial view of a city skyline with prominent skyscrapers, featuring a statue of William Penn in the foreground atop a building, under a clear blue sky.
Statue of William Penn atop the Philadelphia City Hall

Philadelphia County, established in 1682, is unique in that it is coterminous with the city of Philadelphia, serving as both a city and a county — the only such instance in Pennsylvania.

As the state’s most populous county, it is the economic and cultural heart of the region, home to iconic American historical sites including Independence Hall, where the Declaration of Independence and Constitution were signed, and the Liberty Bell, symbols of American freedom and democracy.

The county boasts a vibrant arts scene, with institutions like the Philadelphia Museum of Art and the Pennsylvania Academy of the Fine Arts. The city’s diverse neighborhoods, from the historic streets of Old City to the lively markets of Reading Terminal Market, offer a rich tapestry of cultural experiences, dining, and shopping.

Education and healthcare are significant sectors in Philadelphia County, with numerous universities and hospitals including the University of Pennsylvania and Children’s Hospital of Philadelphia located here.

Allegheny County

Aerial view of a downtown skyline with high-rise buildings at sunset, with water in the foreground and clouds in the sky.
Downtown Pittsburg, Pennsylvania

Allegheny County, formed in 1788, surrounds Pittsburgh, Pennsylvania’s second-largest city, known for its transformation from an industrial powerhouse to a leader in healthcare, education, and technology. The county features significant cultural and educational institutions, such as the Carnegie Museums of Pittsburgh, the University of Pittsburgh, and Carnegie Mellon University, contributing to a vibrant intellectual and cultural landscape.

Pittsburgh’s rich history in steel production is commemorated at the Rivers of Steel National Heritage Area, which includes the Carrie Blast Furnaces National Historic Landmark. The county’s parks, like Frick Park and North Park, provide extensive green spaces within the urban environment, offering trails, sports facilities, and natural areas for residents and visitors.

The convergence of the Allegheny, Monongahela, and Ohio rivers defines Pittsburgh’s unique geography, with the downtown area, known as the Golden Triangle, hosting a mix of historic buildings, modern skyscrapers, and the picturesque Point State Park.

Montgomery County      

A row of houses in a residential area of Norristown, Pennsylvania.
Norristown, Pennsylvania

Montgomery County, established in 1784, is located to the northwest of Philadelphia, combining suburban and rural landscapes. As one of Pennsylvania’s most affluent counties, it offers a high quality of life with its mix of historic towns, modern shopping districts, and extensive parklands. The county seat, Norristown, features the historic Montgomery County Courthouse.

The area is rich in arts and culture, with venues like the Keswick Theatre in Glenside and the Montgomery County Cultural Center in Norristown hosting a variety of performances and events. Educational opportunities abound, with several higher education institutions, including Bryn Mawr College and Villanova University, located within or near its borders.

Outdoor recreation is a significant aspect of Montgomery County’s appeal, with Valley Forge National Historical Park providing a glimpse into the Revolutionary War, along with miles of trails and scenic river views.

Bucks County       

An ornate, historic mansion covered in snow, with multiple gables and a clear blue sky in the background.
Fonthill Castle in Doylestown, Pennsylvania

Bucks County, one of the three original counties in Pennsylvania, was founded in 1682. It is known for its picturesque landscapes, historic sites, and vibrant arts scene. Doylestown, the county seat, houses the Mercer Museum, showcasing early American artifacts, and the James A. Michener Art Museum, dedicated to the region’s cultural heritage.

The county’s rich history is also evident in Washington Crossing Historic Park, where George Washington’s crossing of the Delaware River is commemorated. Bucks County’s small towns and rural settings have long inspired artists and writers, contributing to its reputation as a cultural hub.

The Delaware River forms the eastern boundary of Bucks County, offering recreational activities such as boating and fishing. With its blend of historical significance, natural beauty, and cultural richness, Bucks County attracts visitors and residents seeking a scenic and culturally rich lifestyle.

Delaware County

A tram passes through the historic downtown area of Media, Pennsylvania in Delaware County.
Media, Pennsylvania

Delaware County, located in southeastern Pennsylvania, was established in 1789. It borders Philadelphia and offers a mix of urban and suburban environments. The county seat, Media, is known as “Everybody’s Hometown” and features a charming downtown area with independent shops, restaurants, and the historic Media Theatre.

The county is home to several colleges and universities, including Swarthmore College, known for its beautiful campus and rigorous academic programs. Delaware County’s park system, such as Ridley Creek State Park, provides residents and visitors with over 2,600 acres of woodlands and meadows, offering trails for hiking, biking, and equestrian activities.

Significant historical sites in Delaware County include the Brandywine Battlefield, which marks the site of the largest battle of the Revolutionary War, and the Colonial Pennsylvania Plantation, offering insights into 18th-century farm life. The county’s proximity to Philadelphia allows for easy access to the city’s resources while maintaining its own distinct character and community life.

Smallest Counties in Pennsylvania by Population

Cameron County

A vibrant autumn forest scene with a mixture of green, yellow, orange, and red foliage under a blue sky with wispy clouds.
Quehanna Wild Area in Cameron County, Pennsylvania

Cameron County is nestled in the heart of the Pennsylvania Wilds in the north-central part of the state and is the least populous county in Pennsylvania. Emporium, the county seat, serves as a central hub for the surrounding wilderness and outdoor activities. The region is characterized by its vast expanses of forests, offering a sanctuary for wildlife and a playground for nature enthusiasts.

The county is a prime destination for hunting, fishing, and hiking, with the Sinnemahoning State Park providing a focal point for visitors seeking outdoor recreation. The park features opportunities for spotting elk, bald eagles, and other wildlife, alongside camping and kayaking facilities.

Cameron County’s economy historically revolved around the lumber and powdered metal industries, reflecting the area’s rich natural resources. Despite its small population, the community in Cameron County is tightly knit, with annual events like the Sinnemahoning Snake Hunt.

Sullivan County

A tranquil lake surrounded by dense trees with reflections of the blue sky and clouds visible on the water's surface.
A lake in Pennsylvania’s Sullivan County

Sullivan County, named for Senator Charles C. Sullivan, is situated in northeastern Pennsylvania, encapsulated by the Endless Mountains. This county, with Laporte as its county seat, is celebrated for its untouched natural beauty and tranquil rural landscapes. Sullivan County’s environment is predominantly forested, making it a popular retreat for those seeking peace and outdoor adventure.

Worlds End State Park, located within the county, offers stunning vistas, hiking trails through rugged terrain, and the Loyalsock Creek, renowned for its clear waters and fishing opportunities. The park is a highlight for visitors looking to immerse themselves in nature’s serenity.

The county’s small communities, including Eagles Mere, a historic village known for its pristine lake and seasonal activities, add to Sullivan County’s charm. Despite its modest population, the area hosts events such as the Eagles Mere Toboggan Slide, drawing families and winter sports enthusiasts to experience this unique, century-old tradition.

Forest County

A sunny view of the Forest County Courthouse with a sign and bell in the foreground, the American flag, and a historic red brick building amid autumn foliage.
The Forest County Courthouse in Tionesta, Pennsylvania

Forest County, established in 1848, is located in northwestern Pennsylvania and stands as one of the state’s least populous counties. Its county seat, Tionesta, offers a picturesque setting along the Allegheny River, embodying the serene and untouched nature of the region.

The county is predominantly covered by the Allegheny National Forest, providing a vast playground for outdoor enthusiasts interested in hiking, camping, and wildlife observation.

The area is known for the Tionesta Lake and Dam, which offer recreational activities such as fishing, boating, and picnicking, drawing visitors seeking relaxation and scenic beauty. The Forest County area is also celebrated for its annual events, like the Tionesta Indian Festival, which brings the community together with a parade, crafts, and cultural performances, showcasing the local heritage and spirit.

With its dense forests, clear waters, and welcoming small-town atmosphere, Forest County serves as a retreat for those looking to escape the bustle of city life and immerse themselves in Pennsylvania’s natural landscapes.

More Notable Counties in Pennsylvania

Lancaster County

A serene sunset over a winding river flanked by forested hills, with a small island visible in the distance.
Susquehanna River in Lancaster County, Pennsylvania

Lancaster County, formed in 1729, is widely recognized for its Amish and Mennonite communities, who live alongside modern society while maintaining a simpler lifestyle. The county is a significant agricultural center, with sprawling farms and roadside stands offering fresh, locally-grown produce.

Lancaster, the county seat, combines historic charm with contemporary life, featuring vibrant markets, art galleries, and theaters.

The county’s countryside is a patchwork of scenic farmlands, covered bridges, and quaint towns. Lancaster County’s unique cultural heritage is celebrated through events like the annual Mud Sales, auctions that support local volunteer fire companies and provide a unique experience for visitors.

Tourism plays a vital role in the local economy, with attractions such as the Strasburg Rail Road and the Pennsylvania Dutch Country drawing visitors interested in experiencing the area’s rich history, culture, and traditional crafts.

Erie County

A white lighthouse with an attached red-roofed building surrounded by trees with early autumn foliage against a blue sky with wispy clouds. The foreground shows a sandy beach with grass tufts.
Presque Isle Lighthouse in Erie, Pennsylvania

Erie County, founded in 1803, is Pennsylvania’s only lakeside county, situated along the beautiful shores of Lake Erie. Erie, the county seat, is known as the Gem City for its sparkling position by the water. The county is distinguished by Presque Isle State Park, a sandy peninsula that juts into Lake Erie, offering miles of beaches, trails, and recreational activities such as swimming, boating, and bird watching.

The area around Erie is rich in maritime history, reflected in attractions like the Erie Maritime Museum and the U.S. Brig Niagara, providing insights into the War of 1812 and the Great Lakes’ nautical past. The county also boasts a vibrant cultural scene with the Erie Art Museum, Erie Playhouse, and annual events like the Erie Summer Festival of the Arts.

Erie County’s vineyards and wineries, part of the Lake Erie Wine Country, highlight the region’s agricultural diversity, producing a variety of wines that benefit from the lake’s moderating effect on the climate.

Fayette County

A modern house with horizontal lines built over a waterfall, surrounded by a forest with autumn-colored leaves.
Fallingwater in Mill Run, Pennsylvania

Fayette County, created in 1783, is nestled in the Laurel Highlands of southwestern Pennsylvania. Uniontown, the county seat, offers a window into the area’s rich historical tapestry, including its role in the early stages of the American Revolution and the development of the National Road, the first major highway in the United States.

The county is renowned for hosting two of Frank Lloyd Wright’s architectural marvels: Fallingwater, built over a waterfall and considered one of the greatest architectural triumphs of the 20th century, and Kentuck Knob, another stunning example of Wright’s integration of architecture and nature. These homes attract architecture enthusiasts from around the world.

Fayette County’s natural beauty is highlighted by the Ohiopyle State Park, a hub for outdoor recreation with its whitewater rapids on the Youghiogheny River, scenic hiking trails, and breathtaking waterfalls.

Lehigh County

Exterior view of a historic United States Post Office building with neoclassical architectural elements and the American flag flying overhead, located on a city street corner.
The Historic Allentown Postal Office

Lehigh County, established in 1812, is situated in eastern Pennsylvania, with Allentown as its county seat. Allentown plays a critical role in the region’s cultural and economic landscape, featuring attractions such as the Allentown Art Museum, which offers a broad spectrum of art collections, and the America on Wheels Museum, dedicated to the history of over-the-road transportation.

The county benefits from a diverse economy, with a mix of manufacturing, health care, and service industries. Dorney Park & Wildwater Kingdom, located within the county, provides entertainment for families and visitors with its combination of amusement and water park attractions.

Lehigh County is also home to the Lehigh Valley IronPigs, a minor league baseball team, playing at Coca-Cola Park. The area’s collegiate institutions, including Muhlenberg College and Cedar Crest College, add to the vibrant academic community.

Chester County

An ornate outdoor garden with a large fountain display, featuring multiple high jets of water, surrounded by neatly trimmed hedges, trees, and a classical architectural structure with visitors enjoying the views.
Longwood Gardens in Chester County

Chester County, one of Pennsylvania’s three original counties, was created in 1682. West Chester, the county seat, encapsulates the area’s rich history and vibrant community life with its well-preserved downtown area, bustling with shops, restaurants, and galleries.

Agriculture plays a vital role in Chester County’s economy, with its fertile land supporting mushroom farming, dairy production, and a burgeoning wine industry. Longwood Gardens, an expansive horticultural display garden in Kennett Square, draws visitors from around the globe to its exquisite flower collections and elaborate fountain shows.

The county’s landscape is characterized by rolling hills, scenic farmlands, and protected natural areas, providing a picturesque backdrop for outdoor activities and leisure.

More About Pennsylvania Counties: FAQs

Which Pennsylvania county is the largest by area?

Lycoming County is the largest by area in Pennsylvania, covering an area of 1,244 square miles (3,222 km2).

What county in Pennsylvania is known as the “Christmas Tree Capital of the World”?

Indiana County holds the title of the “Christmas Tree Capital of the World.”

Which Pennsylvania county has the highest elevation point?

Somerset County, where Mount Davis is located, has the highest elevation point in the state at 3,213 ft (979 m).

Which Pennsylvania county is known for its Amish population?

Lancaster County is renowned for its Amish community.

Which Pennsylvania county has the youngest population?

Centre County, home to Penn State University, typically has a younger population demographic.

Image Sources and Copyright Information
  • Aerial View of William Penn Statue Atop Philadelphia City Hall with Skyline: © photosounds/Shutterstock
  • Pittsburgh Skyline Bathed in Warm Sunset Light: © Mihai_Andritoiu/Shutterstock
  • Row of Traditional Brick Houses with Porches on a Cloudy Day: © Dee Dalasio/Shutterstock
  • Winter Wonderland: Majestic Castle Blanketed in Snow: © Christian Carollo/Shutterstock
  • Street Scene with Tram in Media, Pennsylvania on a Clear Day: © Bo Shen/Shutterstock
  • Autumn Splendor in Quehanna Wild Area, Cameron County: © Thomas Gari/Shutterstock
  • Serene Lake Surrounded by Lush Forests in Sullivan County, Pennsylvania: © Kimlee Smith/Shutterstock
  • Autumn Day at Forest County Courthouse in Tionesta, Pennsylvania: © woodsnorthphoto/Shutterstock
  • Sunset Over the Susquehanna River with View of Lush Hillsides: © Jon Bilous/Shutterstock
  • Presque Isle Lighthouse on a Sunny Day with Blue Skies and Surrounding Foliage: © haveseen/Shutterstock
  • Autumnal View of a Modern House Over a Waterfall Amidst Colorful Foliage: © Sean Pavone/Shutterstock
  • Classical Architecture of a Government Building in Allentown, Pennsylvania: © Amy Lutz/Shutterstock
  • Fountain Show at Longwood Gardens in Chester County, Pennsylvania: © Photo Spirit/Shutterstock