State Route 61 is a north–south state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in the northern portion of the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Ohio

Ohio

Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

. Its southern terminus is at the U.S. Route 36/State Route 3 concurrency in Sunbury

Sunbury, Ohio

Sunbury is a village in Delaware County, Ohio, United States. The population was 4,389 at the 2010 census. The village is centered around a New England-styled traditional town square with the historic village hall located in the center of a village green...

, and its northern terminus is at U.S. Route 6 east of Huron

Huron, Ohio

Huron is a city in Erie County, Ohio, United States. The population was 7,958 at the 2000 census. It is part of the Sandusky, Ohio Metropolitan Statistical Area.-History and culture:...

, at the southern-most point of Lake Erie

Lake Erie

Lake Erie is the fourth largest lake of the five Great Lakes in North America, and the tenth largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has the shortest average water residence time. It is bounded on the north by the...

 (which is subsequently the southern-most northern border of the United States). State Route 61 is routed through the communities of Mount Gilead

Mount Gilead, Ohio

Mount Gilead is a village in Morrow County, Ohio, United States.Mount Gilead's population was 3,290 at the 2000 census. It is the county seat of Morrow County and the center of population of Ohio. The village was established in 1832, eight years after white settlers arrived in the region...

, Galion

Galion, Ohio

Settlers arrived in the area as early as 1817. The location was at the crossroads of a north-south road from Columbus to Portland , and the east-west route that later became the Lincoln Highway and subsequently the Harding Highway....

, Crestline

Crestline, Ohio

While the Census Bureau recognizes Crestline as a village, its 2000 population of 5,088 makes it a city under Ohio law.Crestline operates under a mayor-council system, with a council of eight members...

, Shelby

Shelby, Ohio

Shelby is a city in Richland County in the U.S. state of Ohio, northwest of the city of Mansfield. It is part of the Mansfield, Ohio Metropolitan Statistical Area. The population was 9,821 at the 2000 census.-History:...

, Plymouth

Plymouth, Ohio

Plymouth is a village in Huron and Richland counties in the U.S. state of Ohio. The population was 1,852 at the 2000 census.The Richland County portion of Plymouth is part of the Mansfield Metropolitan Statistical Area, while the Huron County portion is part of the Norwalk Micropolitan Statistical...

, Norwalk

Norwalk, Ohio

At the 2000 census, there were 16,238 people, 6,377 households and 4,234 families residing in the city. The population density was 1,950.3 per square mile . There were 6,687 housing units at an average density of 803.1 per square mile...

, and Berlin Heights

Berlin Heights, Ohio

Berlin Heights is a village in Erie County, Ohio, United States. The population was 685 at the 2000 census. It is part of the Sandusky, Ohio Metropolitan Statistical Area....

.

Route 61C

Route61C is a 0.72-mile connection between the Norwalk Bypass US 20/SR 18 and SR 61 southwest of Norwalk

Norwalk, Ohio

At the 2000 census, there were 16,238 people, 6,377 households and 4,234 families residing in the city. The population density was 1,950.3 per square mile . There were 6,687 housing units at an average density of 803.1 per square mile...

. The intersection forms a sideways triangle with SR 61 as the base on the east, US 20 as the south side, and Route 61C as the north side. Route 61C exists because US 20 bridges SR 61 on the south side of the triangle and would have not intersected SR 61 otherwise. Route 61C is part of a former alignment of US 20.