Seneca County Map
The County of Seneca is located in the State of Ohio. Find directions to Seneca County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Seneca County population is estimated at 54,938 people. The Seneca County time zone is Eastern Daylight Time which is 5 hours behind Coordinated Universal Time (UTC).
Nearby counties include Crawford County, Hancock County, Huron County, Sandusky County, Wood County, Wyandot County.
Top cities include Tiffin, Fostoria, Green Springs, Bloomville, Attica