State Route 821 is a north–south state highway in the southeastern portion of the U.S. state of Ohio. A state-maintained section of the old US 21, its southern terminus is at SR 60 approximately 2 mil

Guernsey County is a county located in the east-central portion of the U.S. state of Ohio. As of the 2020 census, the population was 38,438. Its county seat and largest city is Cambridge. It is named