Vermilion is a city in Erie and Lorain Counties in the U.S. state of Ohio, on Lake Erie. Its population was 10,659 at the 2020 census. Located about 35 miles west of Cleveland and 17 miles east of Sandusky, it is part of the Cleveland metropolitan area and Sandusky micropolitan area.

Erie County is a county in the northern portion of the U.S. state of Ohio. As of the 2020 census, the population was 75,622. Its county seat and largest city is Sandusky. The county is named for the Erie tribe, whose name was their word for "wildcat". It was formed in 1838 from the northern third of Huron County and a portion of Sandusky County.