Map for Sixth City Marketing Map for Sixth City Marketing Search | Advanced Search | New Members | Coupons and Discounts | All Categories Advertising & Media >> Advertising Sixth City Marketing 35 East Gay Street, # 324Columbus, OH 43215 | directions (440) 821-1425 Visit Site Need to update your categories or expand your listing? Or want to learn how your business can become a part of the Chamber? Contact us at membership@columbus.org for assistance.