The Celina-Mercer County Chamber of Commerce is a voluntary organization of business and professional men and women who have joined together for the purpose of promoting the civic, economic and social progress of Mercer County. The Celina Mercer County Chamber of Commerce is a non-profit Corporation (501C6) with approximately 400 members, funded by membership dues, donations, and fundraising events. We are a member of SOCA, Northern Ohio Area Chamber of Commerce, Alliance of Ohio Chambers, BBB, Ohio Chamber of Commerce and US Chamber.