Ohio Chamber of Commerce Share: Chamber of CommerceGovernment Ohio Chamber of Commerce Visit Website PO Box 15159 Columbus, OH 43215-0159 (614) 228-4201 (800) 622-1893 (614) 228-6403 (fax) www.ohiochamber.com Facebook Twitter About Map About As the state’s leading business advocate and resource, the Ohio Chamber of Commerce aggressively champions free enterprise, economic competitiveness and growth for the benefit of all Ohioans. What's Nearby? Distance: 5 10 15 20 25 50 mi.