Seneca County, Ohio
Seneca County is a county in Ohio with an estimated population of 54,527 in 2023. 8 cities, towns and Census places in it are indexed here.
Largest places in Seneca County
Tiffin 17,603Fostoria 13,039Green Springs 1,222Attica 868Bloomville 853Bettsville 593Republic 542New Riegel 280
About Seneca County
Seneca County is one of the counties of Ohio. County governments in Ohio handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.