Welcome to a comprehensive alphabetical list of counties in Pennsylvania A-Z. Whether you’re a resident or just interested in the Keystone State, this alphabetical list provides a quick and easy reference to navigate through Pennsylvania’s regions. Plus, read to the bottom of the page for some bonus trivia like: How many counties are there in Pennsylvania? What county in Pennsylvania has the most people? What is the least populated county in PA? And more! So keep on reading for our alphabetical list of counties in Pennsylvania A-Z from Adams to York.
A
Adams
Allegheny
Armstrong
B
Beaver
Bedford
Berks
Blair
Bradford
Bucks
Butler
C
Cambria
Cameron
Carbon
Centre
Chester
Clarion
Clearfield
Clinton
Columbia
Crawford
Cumberland
D
Dauphin
Delaware
E
Elk
Erie
F
Fayette
Forest
Franklin
Fulton
G
Greene
H
Huntingdon
I
Indiana
J
Jefferson
Juniata
K
L
Lackawanna
Lancaster
Lawrence
Lebanon
Lehigh
Luzerne
Lycoming
M
McKean
Mercer
Mifflin
Monroe
Montgomery
Montour
N
Northampton
Northumberland
O
P
Perry
Philadelphia
Pike
Potter
Q
R
S
Schuylkill
Snyder
Somerset
Sullivan
Susquehanna
T
Tioga
U
Union
V
Venango
W
Warren
Washington
Wayne
Westmoreland
Wyoming
X
Y
York
Z
Philadelphia
Montgomery
Philadelphia, Bucks, and Chester