U.S. Route 30 (US 30) is a United States Numbered Highway that runs from Astoria, Oregon, to Atlantic City, New Jersey. In the state of Ohio, it is a major, 245-mile-long (394 km), east–west highway that runs through the northern section of the state. Overall, the highway runs through rural areas dominated by farm fields or woodlands; some segments are urban in character in the Mansfield and Canton areas.

Mansfield is a city in and the county seat of Richland County, Ohio, United States. Located midway between Columbus and Cleveland via Interstate 71, it is part of Northeast Ohio region in the western foothills of the Allegheny Plateau. The 2020 Census showed that the city had a total population of 47,534, making it the 21st-largest city in Ohio. It lies approximately 65 miles (105 km) southwest of Cleveland, 45 miles (72 km) southwest of Akron and 65 miles (105 km) northeast of Columbus.