Find out the list of all Pennsylvania counties in alphabetical order, including their size, seats and numbers.
A
Adams County (PA)
Allegheny County (PA)
Armstrong County (PA)
B
Beaver County (PA)
Bedford County (PA)
Berks County (PA)
Blair County (PA)
Bradford County (PA)
Bucks County (PA)
Butler County (PA)
C
Cambria County (PA)
Cameron County (PA)
Carbon County (PA)
Centre County (PA)
Chester County (PA)
Clarion County (PA)
Clearfield County (PA)
Clinton County (PA)
Columbia County (PA)
Crawford County (PA)
Cumberland County (PA)
D
Dauphin County (PA)
Delaware County (PA)
E
Elk County (PA)
Erie County (PA)
F
Fayette County (PA)
Forest County (PA)
Franklin County (PA)
Fulton County (PA)
G
Greene County (PA)
H
Huntingdon County (PA)
I
Indiana County (PA)
J
Jefferson County (PA)
Juniata County (PA)
L
Lackawanna County (PA)
Lancaster County (PA)
Lawrence County (PA)
Lebanon County (PA)
Lehigh County (PA)
Luzerne County (PA)
Lycoming County (PA)
M
McKean County (PA)
Monroe County (PA)
Montgomery County (PA)
Montour County (PA)
N
Northampton County (PA)
Northumberland County (PA)
P
Perry County (PA)
Philadelphia County (PA)
Pike County (PA)
Potter County (PA)
S
Schuylkill County (PA)
Snyder County (PA)
Somerset County (PA)
Sullivan County (PA)
Susquehanna County (PA)
T
Tioga County (PA)
U
Union County (PA)
V
Venango County (PA)
W
Warren County (PA)
Washington County (PA)
Wayne County (PA)
Westmoreland County (PA)
Wyoming County (PA)
Y
York County (PA)
List of all Pennsylvania counties in printable and scannable format
A
Adams County (PA), Allegheny County (PA), Armstrong County (PA)
B
Beaver County (PA), Bedford County (PA), Berks County (PA), Blair County (PA), Bradford County (PA), Bucks County (PA), Butler County (PA)
C
Cambria County (PA), Cameron County (PA), Carbon County (PA), Centre County (PA), Chester County (PA), Clarion County (PA), Clearfield County (PA), Clinton County (PA), Columbia County (PA), Crawford County (PA), Cumberland County (PA)
D
Dauphin County (PA), Delaware County (PA)
E
Elk County (PA), Erie County (PA)
F
Fayette County (PA), Forest County (PA), Franklin County (PA), Fulton County (PA)
G
Greene County (PA)
H
Huntingdon County (PA)
I
Indiana County (PA)
J
Jefferson County (PA), Juniata County (PA)
L
Lackawanna County (PA), Lancaster County (PA), Lawrence County (PA), Lebanon County (PA), Lehigh County (PA), Luzerne County (PA), Lycoming County (PA)
M
McKean County (PA), Monroe County (PA), Montgomery County (PA), Montour County (PA)
N
Northampton County (PA), Northumberland County (PA)
P
Perry County (PA), Philadelphia County (PA), Pike County (PA), Potter County (PA)
S
Schuylkill County (PA), Snyder County (PA), Somerset County (PA), Sullivan County (PA), Susquehanna County (PA)
T
Tioga County (PA)
U
Union County (PA)
V
Venango County (PA)
W
Warren County (PA), Washington County (PA), Wayne County (PA), Westmoreland County (PA), Wyoming County (PA)
Y
York County (PA)
List of all Pennsylvania counties and their county size
Adams County, PA — 519 sq mi
Allegheny County, PA — 745 sq mi
Armstrong County, PA — 664 sq mi
Beaver County, PA — 444 sq mi
Bedford County, PA — 1,012 sq mi
Berks County, PA — 857 sq mi
Blair County, PA — 527 sq mi
Bradford County, PA — 1,147 sq mi
Bucks County, PA — 622 sq mi
Butler County, PA — 765 sq mi
Cambria County, PA — 694 sq mi
Cameron County, PA — 398 sq mi
Carbon County, PA — 383 sq mi
Centre County, PA — 1,110 sq mi
Chester County, PA — 759 sq mi
Clarion County, PA — 607 sq mi
Clearfield County, PA — 1,145 sq mi
Clinton County, PA — 888 sq mi
Columbia County, PA — 490 sq mi
Crawford County, PA — 1,012 sq mi
Cumberland County, PA — 550 sq mi
Dauphin County, PA — 525 sq mi
Delaware County, PA — 184 sq mi
Elk County, PA — 827 sq mi
Erie County, PA — 799 sq mi
Fayette County, PA — 790 sq mi
Forest County, PA — 428 sq mi
Franklin County, PA — 772 sq mi
Fulton County, PA — 438 sq mi
Greene County, PA — 578 sq mi
Huntingdon County, PA — 875 sq mi
Indiana County, PA — 827 sq mi
Jefferson County, PA — 657 sq mi
Juniata County, PA — 394 sq mi
Lackawanna County, PA — 459 sq mi
Lancaster County, PA — 944 sq mi
Lawrence County, PA — 363 sq mi
Lebanon County, PA — 362 sq mi
Lehigh County, PA — 348 sq mi
Luzerne County, PA — 890 sq mi
Lycoming County, PA — 1,244 sq mi
McKean County, PA — 979 sq mi
Monroe County, PA — 608 sq mi
Montgomery County, PA — 487 sq mi
Montour County, PA — 132 sq mi
Northampton County, PA — 377 sq mi
Northumberland County, PA — 478 sq mi
Perry County, PA — 556 sq mi
Philadelphia County, PA — 135 sq mi
Pike County, PA — 545 sq mi
Potter County, PA — 1,081 sq mi
Schuylkill County, PA — 779 sq mi
Snyder County, PA — 332 sq mi
Somerset County, PA — 1,074 sq mi
Sullivan County, PA — 452 sq mi
Susquehanna County, PA — 832 sq mi
Tioga County, PA — 1,134 sq mi
Union County, PA — 316 sq mi
Venango County, PA — 683 sq mi
Warren County, PA — 884 sq mi
Washington County, PA — 857 sq mi
Wayne County, PA — 751 sq mi
Westmoreland County, PA — 1,028 sq mi
Wyoming County, PA — 405 sq mi
York County, PA — 904 sq mi
List of all Pennsylvania counties and their county seats
Adams County, PA – Gettysburg
Allegheny County, PA – Pittsburgh
Armstrong County, PA – Kittanning
Beaver County, PA – Beaver
Bedford County, PA – Bedford
Berks County, PA – Reading
Blair County, PA – Hollidaysburg
Bradford County, PA – Towanda
Bucks County, PA – Doylestown
Butler County, PA – Butler
Cambria County, PA – Ebensburg
Cameron County, PA – Emporium
Carbon County, PA – Jim Thorpe
Centre County, PA – Bellefonte
Chester County, PA – West Chester
Clarion County, PA – Clarion
Clearfield County, PA – Clearfield
Clinton County, PA – Lock Haven
Columbia County, PA – Bloomsburg
Crawford County, PA – Meadville
Cumberland County, PA – Carlisle
Dauphin County, PA – Harrisburg
Delaware County, PA – Media
Elk County, PA – Ridgway
Erie County, PA – Erie
Fayette County, PA – Uniontown
Forest County, PA – Tionesta
Franklin County, PA – Chambersburg
Fulton County, PA – McConnellsburg
Greene County, PA – Waynesburg
Huntingdon County, PA – Huntingdon
Indiana County, PA – Indiana
Jefferson County, PA – Brookville
Juniata County, PA – Mifflintown
Lackawanna County, PA – Scranton
Lancaster County, PA – Lancaster
Lawrence County, PA – New Castle
Lebanon County, PA – Lebanon
Lehigh County, PA – Allentown
Luzerne County, PA – Wilkes-Barre
Lycoming County, PA – Williamsport
McKean County, PA – Smethport
Monroe County, PA – Stroudsburg
Montgomery County, PA – Norristown
Montour County, PA – Danville
Northampton County, PA – Easton
Northumberland County, PA – Sunbury
Perry County, PA – New Bloomfield
Philadelphia County, PA – Philadelphia
Pike County, PA – Milford
Potter County, PA – Coudersport
Schuylkill County, PA – Pottsville
Snyder County, PA – Middleburg
Somerset County, PA – Somerset
Sullivan County, PA – Laporte
Susquehanna County, PA – Montrose
Tioga County, PA – Wellsboro
Union County, PA – Lewisburg
Venango County, PA – Franklin
Warren County, PA – Warren
Washington County, PA – Washington
Wayne County, PA – Honesdale
Westmoreland County, PA – Greensburg
Wyoming County, PA – Tunkhannock
York County, PA – York
Pennsylvania counties by region
Western Pennsylvania
Allegheny County, PA
Armstrong County, PA
Beaver County, PA
Butler County, PA
Clarion County, PA
Crawford County, PA
Erie County, PA
Fayette County, PA
Greene County, PA
Indiana County, PA
Lawrence County, PA
Mercer County, PA
Venango County, PA
Washington County, PA
Westmoreland County, PA
Southwestern Pennsylvania
Bedford County, PA
Blair County, PA
Cambria County, PA
Somerset County, PA
Northern Tier
Bradford County, PA
Cameron County, PA
Clinton County, PA
Lycoming County, PA
Potter County, PA
Sullivan County, PA
Tioga County, PA
Wyoming County, PA
Central Pennsylvania
Centre County, PA
Clearfield County, PA
Huntingdon County, PA
Juniata County, PA
Mifflin County, PA
Montour County, PA
Northumberland County, PA
Perry County, PA
Snyder County, PA
Union County, PA
Susquehanna Valley
Columbia County, PA
Dauphin County, PA
Lancaster County, PA
Lebanon County, PA
Schuylkill County, PA
Delaware Valley (Greater Philadelphia)
Bucks County, PA
Chester County, PA
Delaware County, PA
Montgomery County, PA
Philadelphia County, PA
Lehigh Valley
Carbon County, PA
Lehigh County, PA
Northampton County, PA
Northeast Pennsylvania (Poconos & Scranton/Wilkes-Barre)
Lackawanna County, PA
Luzerne County, PA
Monroe County, PA
Pike County, PA
Wayne County, PA
South Central Pennsylvania
Adams County, PA
Cumberland
d County, PA
Franklin County, PA
York County, PA
Northwestern Pennsylvania
Elk County, PA
Forest County, PA
Jefferson County, PA
McKean County, PA
Warren County, PA
What is the largest county in Pennsylvania?
The largest county in Pennsylvania by land area is Lycoming County, which covers 1,244 sq mi.
What is the smallest county in Pennsylvania?
The smallest county in the state of Pennsylvania is Montour County, which covers 132 sq mi.