State Route 534 (SR 534) is a north–south state highway in the northeastern portion of the U.S. state of Ohio. The southern terminus of SR 534 is at its junction with the duplex of U.S. Route 62 (US 62) and SR 173 nearly 4.50 miles (7.24 km) west of Salem. Its northern terminus is a curve in Geneva-on-the-Lake where the highway directly transitions into SR 531 at that route's western terminus.

Mahoning County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 228,614. Its county seat and largest city is Youngstown. The county is named after the Mahoning River and was formed on March 1, 1846; the 83rd county in Ohio.