Seneca County was founded in February 1820 and was named after the Seneca Indian Tribe. Seneca County is located in the northern part of Ohio, consists of 15 townships, and has a population of 56,745 people.  

OSU Extension works with children, volunteers, farmers and business owners, community leaders, and eleceted officials to help make Seneca County a great place to live and work. Along with the support from our local county commissioners, we strive to provide many services for members of our county. OSU Extension - Seneca County is currently staffed with five full-time employees. Erin Mancuso, Office Associate; Katie Cole, 4-H Youth Development; Hallie Williams, Agriculture and Natural Resources; and Joanne Fyfe and Cindy Taylor, SNAP-Ed program assistants. We welcome the opportunity to answer any questions you may have about OSU Extension and the programs we offer. 

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About OSU Extension

Since 1914, Extension has been helping all Ohioans build better lives, better businesses and better communities.

Ohio State University Extension brings the knowledge of the university directly to you. We fulfill the land-grant mission of The Ohio State University by interpreting knowledge and research developed by Extension and other faculty and staff at the Ohio Agricultural Research and Development Center, Ohio State main campus, and other land-grant universities – so Ohioans can use the scientifically-based information to better their lives, businesses and communities.

The Extension system is the world’s largest non-formal educational system. Extension programs address the needs of the local community while also addressing state, national, and global issues. Our practical educational programs combine the needs of local citizens and communities with new research and technical information.

No matter which county you visit, you can find people who are helped by the four major OSU Extension program areas: family and consumer sciences, 4-H youth development, community development, and agriculture and natural resources. These program areas – and many other special topics – are continuously evaluated and updated to meet the changing needs and issues facing each community. Extension provides practical advice, sensible solutions, and realistic down-to-earth answers for ALL Ohioans.

OSU Extension is...

Our mission: Engaging people to strengthen their lives and communities through research-based educational programming.

Our vision: OSU Extension is a dynamic educational entity that partners with individuals, families, communities, business and industry, and organizations to strengthen the lives of Ohioans.