State Route 430 is an east–west 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 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...

. The western terminus of State Route 430 is at an interchange with State Route 309 in Ontario

Ontario, Ohio

As of the census of 2000, there were 5,303 people, 2,186 households, and 1,554 families residing in the city. The population density was 485.7 people per square mile . The racial makeup of the city was 92.36% White, 4.11% African American, 0.04% Native American, 1.58% Asian, 0.04% Pacific Islander,...

. Its eastern terminus is at a T-intersection with State Route 603

Ohio State Route 603

State Route 603 is a north–south state highway in the northern portion of the U.S. state of Ohio. Its southern terminus is at State Route 95 near Perrysville, and its northern terminus is at State Routes 61 and 98 in Plymouth along the Baseline Road that separates Huron County and Richland...

 just outside of Mifflin

Mifflin, Ohio

Mifflin is a village in Ashland County, Ohio, United States. The population was 144 at the 2000 census.-Geography:Mifflin is located at .According to the United States Census Bureau, the village has a total area of , all of it land....

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Route description

This state highway runs through portions of Richland

Richland County, Ohio

Richland County is a county located in the state of Ohio, United States. As of the 2010 census, the population was 124,475. It is included in the Mansfield, Ohio, Metropolitan Statistical Area as well as the Mansfield–Bucyrus Combined Statistical Area....

 and Ashland

Ashland County, Ohio

Ashland County is a county located in the state of Ohio, United States, and was formed in 1846 from parts of Huron, Lorain, Richland and Wayne Counties. As of the 2010 census, the population was 53,139. Its county seat is Ashland...

 Counties. No part of State Route 430 is included as a part of the National Highway System

National Highway System (United States)

The National Highway System is a network of strategic highways within the United States, including the Interstate Highway System and other roads serving major airports, ports, rail or truck terminals, railway stations, pipeline terminals and other strategic transport facilities.Individual states...

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History

State Route 430 was designated circa 1960 along the routing that it currently occupies. No changes of major significance have taken place to the highway since its inception.

Major intersections