State Route 603 (SR 603) is a north–south

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...

in the northern portion of the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...

. Its southern terminus is at

State Route 95 Route 95, or Highway 95, may refer to routes in the following countries: __TOC__ International * European route E95 Australia * Great Northern Highway (Western Australia) * Fossickers Way (New South Wales) Canada * British Columbia Highway 95 * ...

near Perrysville, and its northern terminus is at State Routes 61 and 98 in

Plymouth Plymouth () is a port city and unitary authority in South West England. It is located on the south coast of Devon, approximately south-west of Exeter and south-west of London. It is bordered by Cornwall to the west and south-west. Plymouth ...

along the Baseline Road that separates Huron County and Richland County, and subsequently the southern boundary of the

Firelands The Firelands, or Sufferers' Lands, tract was located at the western end of the Connecticut Western Reserve in what is now the U.S. state of Ohio. It was legislatively established in 1792, as the "Sufferers' Lands", and later became named "Fire Land ...

and

Connecticut Western Reserve The Connecticut Western Reserve was a portion of land claimed by the Colony of Connecticut and later by the state of Connecticut in what is now mostly the northeastern region of Ohio. The Reserve had been granted to the Colony under the terms of ...

History

SR 603 was commissioned in 1938 along its current alignment, between Shiloh and SR 95. Between 1953 and 1955 the route was paved. The route was extended west to Plymouth between 1959 and 1961.

Major intersections

References

{{Reflist

603 __NOTOC__ Year 603 ( DCIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 603 for this year has been used since the early medieval period, when the Anno Domini calendar era ...

Transportation in Richland County, Ohio Transportation in Ashland County, Ohio