Ohio: Index of Counties and Equivalents

Ohio Atlas of Historical County Boundaries

John H. Long, Editor; Peggy Tuck Sinko, Associate Editor and Historical Compiler; Douglas Knox, Book Digitizing Director; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist and Digital Compiler; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant

Copyright The Newberry Library 2007

ADAMS

ALLEN

ASHLAND

ASHTABULA

ATHENS

AUGLAIZE

BELMONT

BROWN

BUTLER

CARROLL

CHAMPAIGN

CLARK (Ind.)

CLARK

CLERMONT

CLINTON

COLUMBIANA

COSHOCTON

CRAWFORD

CUYAHOGA

DARKE

DEFIANCE

DELAWARE

Disputed Area

ERIE

FAIRFIELD

FAYETTE

FRANKLIN

FULTON

GALLIA

GEAUGA

GREENE

GUERNSEY

HAMILTON

HANCOCK

HARDIN

HARRISON

HENRY

HIGHLAND

HILLSDALE (Mich.)

HOCKING

HOLMES

HURON

ILLINOIS (Va., extinct)

Indiana Territory

JACKSON

JEFFERSON

KNOX (Ind.)

KNOX

LAKE

LAWRENCE

LENAWEE (Mich.)

LICKING

LOGAN

LORAIN

LUCAS

MADISON

MAHONING

MARION

MEDINA

MEIGS

MERCER

MIAMI

MONROE

MONROE (Mich.)

MONTGOMERY

MORGAN

MORROW

MUSKINGUM

NOBLE

Non-County Area 1

Non-County Area 2

Non-County Area 3

Non-County Area 4

Non-County Area 5

Non-County Area 6

Non-County Area 7

Non-County Area 8

Non-County Area 9

Northwest Territory

OTTAWA

Overlap Area 1

Overlap Area 2

PAULDING

PERRY

PICKAWAY

PIKE

PORTAGE

PREBLE

PUTNAM

RICHLAND

ROSS

SANDUSKY

SCIOTO

SENECA

SHELBY

STARK

SUMMIT

TRUMBULL

TUSCARAWAS

UNION

Unorganized Federal Territory

VAN WERT

VINTON

WARREN

WASHINGTON

WAYNE (Northwest Territory, extinct)

WAYNE (Indiana Territory, extinct)

WAYNE

WAYNE (Mich.)

Western Reserve

WILLIAMS

WOOD

WYANDOT