Jefferson is a village in Ashtabula County, Ohio, United States, and its county seat. The population was 3,226 at the 2020 census. It is part of the Cleveland Metropolitan Area, 50 miles northeast of

Ashtabula County is the northeasternmost county in the U.S. state of Ohio. As of the 2020 census, the population was 97,574. The county seat is Jefferson, while its largest city is Ashtabula. The coun