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https://mercer.osu.edu
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College of Food, Agricultural, and Environmental Sciences

CFAES

Mercer County

  • Mercer County
  • Program Areas
    • 4-H Youth Development
      • 4-H Enrollment Information
      • 4-H Newsletters
      • Advisor Resources
      • Harbor Point 4-H Camp
      • How to Join 4-H
      • Junior Fair Auction Information
      • Livestock ID & Leasing Information
      • Mercer County Fair & Fair Paperwork
      • Ohio 4-H Family Guide
      • Project Completion and Fair Requirements
      • Project Judging & Livestock Interviews
      • Quality Assurance Information
      • Teen Opportunities
    • Agriculture and Natural Resources
      • Agronomy
      • Farm Management
      • Lawn and Garden
      • Livestock
      • Mercer County Ag Stats
      • Pesticide and Fertilizer Education
      • Small Farm
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      • New Website Helps Ohioans ‘Live Smart’
    • Master Gardener Volunteers
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  • OSU Extension

4-H

Interested in joining Mercer County 4-H?  Check out these documents for more details: 

What is 4-H?

Club and Advisor Information

Fast Facts...2026 Mercer County 4-H

Ohio 4-H Project Guide

Locate An Office

We connect with people in all stages of life, from young children to older adults. We work with families and children, farmers and businessowners, community leaders and elected officials to build better lives, better businesses and better communities to make Ohio great.

  • Locate an office in my county
  • Locate a statewide office
  • Extension personnel directory
©  2025 The Ohio State University, College of Food, Agricultural, and Environmental Sciences

Mercer County Office

4978 Mud Pike, Suite 1
Celina, OH 45822
Phone:
419-586-2179419-586-2179
Fax:
419-586-3367
Directions to Mercer County Extension Office

Hours of Operation

Monday-Friday
8:30a.m. - 4:00p.m.
or by appointment
  • The Ohio State University
  • College of Food, Agricultural, and Environmental Sciences
  • Ohio State University Extension
  • Ohio Agricultural Research and Development Center
  • Ohio State ATI

Social Media

  • OSU Extension Facebook
  • OSU Extension YouTube

2025 | 2120 Fyffe Road | Room 3 Ag Admin Bldg. | Columbus, Ohio 43210 | 614-292-6181

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