The Ohio Mayors Alliance The Ohio Mayors Alliance Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Family, Community & Non-Profit >> Social Advocacy Organizations The Ohio Mayors Alliance 10 W. Broad StreetColumbus, OH 43215 | map | directions (419) 956-8196 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.