Let’s discuss today’s list—a comprehensive alphabetical list of counties in Ohio A-Z! Whether you’re a resident, a traveler, or just someone curious about the Buckeye State, this list of counties in Ohio has it all from Adams to Wyandot. Plus, at the end of the page, we include some bonus trivia like: How many counties does Ohio currently have? What is the smallest county in Ohio? And much more! So join us as we explore this alphabetical list of counties in Ohio A-Z.
A
Adams
Allen
Ashland
Ashtabula
Athens
Auglaize
B
Belmont
Brown
Butler
C
Carroll
Champaign
Clark
Clermont
Clinton
Columbiana
Coshocton
Crawford
Cuyahoga
D
Darke
Defiance
Delaware
E
Erie
F
Fairfield
Fayette
Franklin
Fulton
G
Gallia
Geauga
Greene
Guernsey
H
Hamilton
Hancock
Hardin
Harrison
Henry
Highland
Hocking
Holmes
Huron
I
J
Jackson
Jefferson
K
Knox
L
Lake
Lawrence
Licking
Logan
Lorain
Lucas
M
Madison
Mahoning
Marion
Medina
Meigs
Mercer
Miami
Monroe
Montgomery
Morgan
Morrow
Muskingum
N
Noble
O
Ottawa
P
Paulding
Perry
Pickaway
Pike
Portage
Preble
Putnam
Q
R
Richland
Ross
S
Sandusky
Scioto
Seneca
Shelby
Stark
Summit
T
Trumbull
Tuscarawas
U
Union
V
Van Wert
Vinton
W
Warren
Washington
Wayne
Williams
Wood
Wyandot